5xtc: Difference between revisions

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== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/NDUB8_HUMAN NDUB8_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB2_HUMAN NDUB2_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/Q4GRX1_HUMAN Q4GRX1_HUMAN]] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[SAAS:SAAS00093760] [[http://www.uniprot.org/uniprot/NDUA1_HUMAN NDUA1_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB1_HUMAN NDUB1_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/B9EE38_HUMAN B9EE38_HUMAN]] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[SAAS:SAAS00136983] [[http://www.uniprot.org/uniprot/NDUB4_HUMAN NDUB4_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUS5_HUMAN NDUS5_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUBB_HUMAN NDUBB_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUAA_HUMAN NDUAA_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/ACPM_HUMAN ACPM_HUMAN]] Carrier of the growing fatty acid chain in fatty acid biosynthesis in mitochondria. Accessory and non-catalytic subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), which functions in the transfer of electrons from NADH to the respiratory chain (By similarity). [[http://www.uniprot.org/uniprot/NDUB7_HUMAN NDUB7_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUA3_HUMAN NDUA3_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB5_HUMAN NDUB5_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUBA_HUMAN NDUBA_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/X5BVZ3_HUMAN X5BVZ3_HUMAN]] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[SAAS:SAAS00061107] [[http://www.uniprot.org/uniprot/NDUC1_HUMAN NDUC1_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUC2_HUMAN NDUC2_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB3_HUMAN NDUB3_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUAB_HUMAN NDUAB_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB9_HUMAN NDUB9_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed to be not involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/V9JN72_HUMAN V9JN72_HUMAN]] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[RuleBase:RU004419] [[http://www.uniprot.org/uniprot/NDUB6_HUMAN NDUB6_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUAD_HUMAN NDUAD_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis (PubMed:27626371). Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone (PubMed:27626371). Involved in the interferon/all-trans-retinoic acid (IFN/RA) induced cell death. This apoptotic activity is inhibited by interaction with viral IRF1. Prevents the transactivation of STAT3 target genes. May play a role in CARD15-mediated innate mucosal responses and serve to regulate intestinal epithelial cell responses to microbes (PubMed:15753091).<ref>PMID:12628925</ref> <ref>PMID:12867595</ref> <ref>PMID:15753091</ref> <ref>PMID:27626371</ref>   
[[http://www.uniprot.org/uniprot/NDUB8_HUMAN NDUB8_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB2_HUMAN NDUB2_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/Q4GRX1_HUMAN Q4GRX1_HUMAN]] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[SAAS:SAAS00093760] [[http://www.uniprot.org/uniprot/NDUA1_HUMAN NDUA1_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB1_HUMAN NDUB1_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/B9EE38_HUMAN B9EE38_HUMAN]] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[SAAS:SAAS00136983] [[http://www.uniprot.org/uniprot/NDUB4_HUMAN NDUB4_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUS5_HUMAN NDUS5_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUBB_HUMAN NDUBB_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUAA_HUMAN NDUAA_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/ACPM_HUMAN ACPM_HUMAN]] Carrier of the growing fatty acid chain in fatty acid biosynthesis in mitochondria. Accessory and non-catalytic subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), which functions in the transfer of electrons from NADH to the respiratory chain (By similarity). [[http://www.uniprot.org/uniprot/NDUB7_HUMAN NDUB7_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUA3_HUMAN NDUA3_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB5_HUMAN NDUB5_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUBA_HUMAN NDUBA_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/X5BVZ3_HUMAN X5BVZ3_HUMAN]] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[SAAS:SAAS00061107] [[http://www.uniprot.org/uniprot/NDUC1_HUMAN NDUC1_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUC2_HUMAN NDUC2_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB3_HUMAN NDUB3_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUAB_HUMAN NDUAB_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUB9_HUMAN NDUB9_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed to be not involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/V9JN72_HUMAN V9JN72_HUMAN]] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[RuleBase:RU004419] [[http://www.uniprot.org/uniprot/NDUB6_HUMAN NDUB6_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.<ref>PMID:27626371</ref>  [[http://www.uniprot.org/uniprot/NDUAD_HUMAN NDUAD_HUMAN]] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis (PubMed:27626371). Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone (PubMed:27626371). Involved in the interferon/all-trans-retinoic acid (IFN/RA) induced cell death. This apoptotic activity is inhibited by interaction with viral IRF1. Prevents the transactivation of STAT3 target genes. May play a role in CARD15-mediated innate mucosal responses and serve to regulate intestinal epithelial cell responses to microbes (PubMed:15753091).<ref>PMID:12628925</ref> <ref>PMID:12867595</ref> <ref>PMID:15753091</ref> <ref>PMID:27626371</ref>   
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The respiratory megacomplex represents the highest-order assembly of respiratory chain complexes, and it allows mitochondria to respond to energy-requiring conditions. To understand its architecture, we examined the human respiratory chain megacomplex-I2III2IV2 (MCI2III2IV2) with 140 subunits and a subset of associated cofactors using cryo-electron microscopy. The MCI2III2IV2 forms a circular structure with the dimeric CIII located in the center, where it is surrounded by two copies each of CI and CIV. Two cytochrome c (Cyt.c) molecules are positioned to accept electrons on the surface of the c1 state CIII dimer. Analyses indicate that CII could insert into the gaps between CI and CIV to form a closed ring, which we termed the electron transport chain supercomplex. The structure not only reveals the precise assignment of individual subunits of human CI and CIII, but also enables future in-depth analysis of the electron transport chain as a whole.
Architecture of Human Mitochondrial Respiratory Megacomplex I2III2IV2.,Guo R, Zong S, Wu M, Gu J, Yang M Cell. 2017 Sep 7;170(6):1247-1257.e12. doi: 10.1016/j.cell.2017.07.050. Epub 2017, Aug 24. PMID:28844695<ref>PMID:28844695</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5xtc" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>

Revision as of 10:56, 6 December 2017

Cryo-EM structure of human respiratory complex I transmembrane armCryo-EM structure of human respiratory complex I transmembrane arm

Structural highlights

5xtc is a 29 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:, , ,
Activity:NADH:ubiquinone reductase (H(+)-translocating), with EC number 1.6.5.3
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[NDUA1_HUMAN] Isolated NADH-CoQ reductase deficiency. The disease is caused by mutations affecting the gene represented in this entry. [NDUBB_HUMAN] The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease may be caused by mutations affecting the gene represented in this entry. [NDUAA_HUMAN] Leigh syndrome with leukodystrophy. The disease is caused by mutations affecting the gene represented in this entry. [NDUB3_HUMAN] Isolated NADH-CoQ reductase deficiency. The disease is caused by mutations affecting the gene represented in this entry. [NDUAB_HUMAN] Isolated NADH-CoQ reductase deficiency. The disease is caused by mutations affecting the gene represented in this entry. [NDUB9_HUMAN] Isolated NADH-CoQ reductase deficiency. [NDUAD_HUMAN] Papillary or follicular thyroid carcinoma. Disease susceptibility is associated with variations affecting the gene represented in this entry. Defects in NDUFA13 are a cause of a mitochondrial complex I deficiency characterized by early onset hypotonia, dyskinesia and sensorial deficiencies, as well as a severe optic neuropathy.[1]

Function

[NDUB8_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[2] [NDUB2_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[3] [Q4GRX1_HUMAN] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[SAAS:SAAS00093760] [NDUA1_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[4] [NDUB1_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[5] [B9EE38_HUMAN] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[SAAS:SAAS00136983] [NDUB4_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[6] [NDUS5_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[7] [NDUBB_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[8] [NDUAA_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[9] [ACPM_HUMAN] Carrier of the growing fatty acid chain in fatty acid biosynthesis in mitochondria. Accessory and non-catalytic subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), which functions in the transfer of electrons from NADH to the respiratory chain (By similarity). [NDUB7_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[10] [NDUA3_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[11] [NDUB5_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[12] [NDUBA_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[13] [X5BVZ3_HUMAN] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[SAAS:SAAS00061107] [NDUC1_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[14] [NDUC2_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[15] [NDUB3_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[16] [NDUAB_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[17] [NDUB9_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed to be not involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[18] [V9JN72_HUMAN] Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[RuleBase:RU004419] [NDUB6_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.[19] [NDUAD_HUMAN] Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis (PubMed:27626371). Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone (PubMed:27626371). Involved in the interferon/all-trans-retinoic acid (IFN/RA) induced cell death. This apoptotic activity is inhibited by interaction with viral IRF1. Prevents the transactivation of STAT3 target genes. May play a role in CARD15-mediated innate mucosal responses and serve to regulate intestinal epithelial cell responses to microbes (PubMed:15753091).[20] [21] [22] [23]

Publication Abstract from PubMed

The respiratory megacomplex represents the highest-order assembly of respiratory chain complexes, and it allows mitochondria to respond to energy-requiring conditions. To understand its architecture, we examined the human respiratory chain megacomplex-I2III2IV2 (MCI2III2IV2) with 140 subunits and a subset of associated cofactors using cryo-electron microscopy. The MCI2III2IV2 forms a circular structure with the dimeric CIII located in the center, where it is surrounded by two copies each of CI and CIV. Two cytochrome c (Cyt.c) molecules are positioned to accept electrons on the surface of the c1 state CIII dimer. Analyses indicate that CII could insert into the gaps between CI and CIV to form a closed ring, which we termed the electron transport chain supercomplex. The structure not only reveals the precise assignment of individual subunits of human CI and CIII, but also enables future in-depth analysis of the electron transport chain as a whole.

Architecture of Human Mitochondrial Respiratory Megacomplex I2III2IV2.,Guo R, Zong S, Wu M, Gu J, Yang M Cell. 2017 Sep 7;170(6):1247-1257.e12. doi: 10.1016/j.cell.2017.07.050. Epub 2017, Aug 24. PMID:28844695[24]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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5xtc, resolution 3.70Å

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