3mcb: Difference between revisions
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3mcb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MCB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3MCB FirstGlance]. <br> | <table><tr><td colspan='2'>[[3mcb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MCB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3MCB FirstGlance]. <br> | ||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene>< | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene></td></tr> | ||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3mce|3mce]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3mce|3mce]]</td></tr> | ||
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Alpha NAC, HSD48, NACA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), Beta NAC (BTF3b), BTF3, NACB, OK/SW-cl.8 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Alpha NAC, HSD48, NACA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), Beta NAC (BTF3b), BTF3, NACB, OK/SW-cl.8 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | ||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3mcb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mcb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3mcb RCSB], [http://www.ebi.ac.uk/pdbsum/3mcb PDBsum]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3mcb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mcb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3mcb RCSB], [http://www.ebi.ac.uk/pdbsum/3mcb PDBsum]</span></td></tr> | ||
<table> | </table> | ||
== Function == | |||
[[http://www.uniprot.org/uniprot/NACA_HUMAN NACA_HUMAN]] Prevents inappropriate targeting of non-secretory polypeptides to the endoplasmic reticulum (ER). Binds to nascent polypeptide chains as they emerge from the ribosome and blocks their interaction with the signal recognition particle (SRP), which normally targets nascent secretory peptides to the ER. Also reduces the inherent affinity of ribosomes for protein translocation sites in the ER membrane (M sites). May act as a specific coactivator for JUN, binding to DNA and stabilizing the interaction of JUN homodimers with target gene promoters.<ref>PMID:9877153</ref> <ref>PMID:10982809</ref> <ref>PMID:15784678</ref> [[http://www.uniprot.org/uniprot/BTF3_HUMAN BTF3_HUMAN]] General transcription factor. BTF3 can form a stable complex with RNA polymerase II. Required for the initiation of transcription. | |||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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Crystal structures of NAC domains of human nascent polypeptide-associated complex (NAC) and its alphaNAC subunit.,Wang L, Zhang W, Wang L, Zhang XC, Li X, Rao Z Protein Cell. 2010 Apr;1(4):406-16. Epub 2010 May 8. PMID:21203952<ref>PMID:21203952</ref> | Crystal structures of NAC domains of human nascent polypeptide-associated complex (NAC) and its alphaNAC subunit.,Wang L, Zhang W, Wang L, Zhang XC, Li X, Rao Z Protein Cell. 2010 Apr;1(4):406-16. Epub 2010 May 8. PMID:21203952<ref>PMID:21203952</ref> | ||
From | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
==See Also== | |||
*[[NAC transcription factor|NAC transcription factor]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Li, X M | [[Category: Li, X M]] | ||
[[Category: Rao, Z | [[Category: Rao, Z]] | ||
[[Category: Wang, L | [[Category: Wang, L]] | ||
[[Category: Wang, L F | [[Category: Wang, L F]] | ||
[[Category: Zhang, W C | [[Category: Zhang, W C]] | ||
[[Category: Zhang, X J.C | [[Category: Zhang, X J.C]] | ||
[[Category: Beta-barrel like structure]] | [[Category: Beta-barrel like structure]] | ||
[[Category: Chaperone]] | [[Category: Chaperone]] | ||
[[Category: Heterodimer]] | [[Category: Heterodimer]] | ||
[[Category: Nac]] | [[Category: Nac]] | ||
Revision as of 12:57, 25 December 2014
Crystal structure of NAC domains of human nascent polypeptide-associated complex (NAC)Crystal structure of NAC domains of human nascent polypeptide-associated complex (NAC)
Structural highlights
Function[NACA_HUMAN] Prevents inappropriate targeting of non-secretory polypeptides to the endoplasmic reticulum (ER). Binds to nascent polypeptide chains as they emerge from the ribosome and blocks their interaction with the signal recognition particle (SRP), which normally targets nascent secretory peptides to the ER. Also reduces the inherent affinity of ribosomes for protein translocation sites in the ER membrane (M sites). May act as a specific coactivator for JUN, binding to DNA and stabilizing the interaction of JUN homodimers with target gene promoters.[1] [2] [3] [BTF3_HUMAN] General transcription factor. BTF3 can form a stable complex with RNA polymerase II. Required for the initiation of transcription. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedNascent polypeptide associated complex (NAC) and its two isolated subunits, alphaNAC and betaNAC, play important roles in nascent peptide targeting. We determined a 1.9 A resolution crystal structure of the interaction core of NAC heterodimer and a 2.4 A resolution crystal structure of alphaNAC NAC domain homodimer. These structures provide detailed information of NAC heterodimerization and alphaNAC homodimerization. We found that the NAC domains of alphaNAC and betaNAC share very similar folding despite of their relative low identity of amino acid sequences. Furthermore, different electric charge distributions of the two subunits at the NAC interface provide an explanation to the observation that the heterodimer of NAC complex is more stable than the single subunit homodimer. In addition, we successfully built a betaNAC NAC domain homodimer model based on homologous modeling, suggesting that NAC domain dimerization is a general property of the NAC family. These 3D structures allow further studies on structure-function relationship of NAC. Crystal structures of NAC domains of human nascent polypeptide-associated complex (NAC) and its alphaNAC subunit.,Wang L, Zhang W, Wang L, Zhang XC, Li X, Rao Z Protein Cell. 2010 Apr;1(4):406-16. Epub 2010 May 8. PMID:21203952[4] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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