4ac8: Difference between revisions
New page: '''Unreleased structure''' The entry 4ac8 is ON HOLD until Paper Publication Authors: Andersson, C.S., Berthold, C.L., Hogbom, M. Description: R2-like ligand binding Mn-Fe oxidase from... |
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==R2-like ligand binding Mn-Fe oxidase from M. tuberculosis with an organized C-terminal helix== | |||
<StructureSection load='4ac8' size='340' side='right'caption='[[4ac8]], [[Resolution|resolution]] 2.75Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4ac8]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis_H37Rv Mycobacterium tuberculosis H37Rv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4AC8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4AC8 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.75Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=MYR:MYRISTIC+ACID'>MYR</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4ac8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ac8 OCA], [https://pdbe.org/4ac8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ac8 RCSB], [https://www.ebi.ac.uk/pdbsum/4ac8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ac8 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/RIR2H_MYCTU RIR2H_MYCTU] Probable oxidase that might be involved in lipid metabolism. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Mycobacterium tuberculosis R2-like ligand-binding oxidase (MtR2lox) belongs to a recently discovered group of proteins that are homologous to the ribonucleotide reductase R2 proteins. MtR2lox carries a heterodinuclear Mn/Fe cofactor and, unlike R2 proteins, a large ligand-binding cavity. A unique tyrosine-valine cross link is also found in the vicinity of the active site. To date, all known structures of R2 and R2lox proteins show a disordered C-terminal segment. Here, we present two new crystal forms of MtR2lox, revealing an ordered helical C-terminal. The ability of alternating between an ordered and disordered state agrees well with bioinformatic analysis of the protein sequence. Interestingly, ordering of the C-terminal helix shields a large positively charged patch on the protein surface, potentially used for interaction with other cellular components. We hypothesize that the dynamic C-terminal segment may be involved in control of protein function in vivo. | |||
A Dynamic C-Terminal Segment in the Mycobacterium tuberculosis Mn/Fe R2lox Protein Can Adopt a Helical Structure with Possible Functional Consequences.,Andersson CS, Berthold CL, Hogbom M Chem Biodivers. 2012 Sep;9(9):1981-8. doi: 10.1002/cbdv.201100428. PMID:22976985<ref>PMID:22976985</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4ac8" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Ribonucleotide reductase 3D structures|Ribonucleotide reductase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Mycobacterium tuberculosis H37Rv]] | |||
[[Category: Andersson CS]] | |||
[[Category: Berthold CL]] | |||
[[Category: Hogbom M]] | |||
Latest revision as of 14:23, 20 December 2023
R2-like ligand binding Mn-Fe oxidase from M. tuberculosis with an organized C-terminal helixR2-like ligand binding Mn-Fe oxidase from M. tuberculosis with an organized C-terminal helix
Structural highlights
FunctionRIR2H_MYCTU Probable oxidase that might be involved in lipid metabolism. Publication Abstract from PubMedMycobacterium tuberculosis R2-like ligand-binding oxidase (MtR2lox) belongs to a recently discovered group of proteins that are homologous to the ribonucleotide reductase R2 proteins. MtR2lox carries a heterodinuclear Mn/Fe cofactor and, unlike R2 proteins, a large ligand-binding cavity. A unique tyrosine-valine cross link is also found in the vicinity of the active site. To date, all known structures of R2 and R2lox proteins show a disordered C-terminal segment. Here, we present two new crystal forms of MtR2lox, revealing an ordered helical C-terminal. The ability of alternating between an ordered and disordered state agrees well with bioinformatic analysis of the protein sequence. Interestingly, ordering of the C-terminal helix shields a large positively charged patch on the protein surface, potentially used for interaction with other cellular components. We hypothesize that the dynamic C-terminal segment may be involved in control of protein function in vivo. A Dynamic C-Terminal Segment in the Mycobacterium tuberculosis Mn/Fe R2lox Protein Can Adopt a Helical Structure with Possible Functional Consequences.,Andersson CS, Berthold CL, Hogbom M Chem Biodivers. 2012 Sep;9(9):1981-8. doi: 10.1002/cbdv.201100428. PMID:22976985[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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