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| | <StructureSection load='1nig' size='340' side='right'caption='[[1nig]], [[Resolution|resolution]] 2.00Å' scene=''> | | <StructureSection load='1nig' size='340' side='right'caption='[[1nig]], [[Resolution|resolution]] 2.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1nig]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"thermoplasma_acidophila"_(sic)_darland_et_al._1970 "thermoplasma acidophila" (sic) darland et al. 1970]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NIG OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1NIG FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1nig]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermoplasma_acidophilum Thermoplasma acidophilum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NIG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NIG FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TA1238 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2303 "Thermoplasma acidophila" (sic) Darland et al. 1970])</td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2Å</td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1nig FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nig OCA], [http://pdbe.org/1nig PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1nig RCSB], [http://www.ebi.ac.uk/pdbsum/1nig PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1nig ProSAT], [http://www.topsan.org/Proteins/MCSG/1nig TOPSAN]</span></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=1nig FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nig OCA], [https://pdbe.org/1nig PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1nig RCSB], [https://www.ebi.ac.uk/pdbsum/1nig PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1nig ProSAT], [https://www.topsan.org/Proteins/MCSG/1nig TOPSAN]</span></td></tr> |
| | </table> | | </table> |
| - | <div style="background-color:#fffaf0;">
| + | == Function == |
| - | == Publication Abstract from PubMed == | + | [https://www.uniprot.org/uniprot/Q9HIT9_THEAC Q9HIT9_THEAC] |
| - | The crystal structure of the hypothetical protein TA1238 from Thermoplasma acidophilum was solved with multiple-wavelength anomalous diffraction and refined at 2.0 A resolution. The molecule consists of a typical four-helix antiparallel bundle with overhand connection. However, its oligomerization into a trimer leads to a coiled "super-helix" which is novel for such bundles. Its central feature, a six-stranded coiled coil, is also novel for proteins. TA1238 does not have strong sequence homologues in databases, but shows strong structural similarity with some proteins in the Protein Data Bank. The function could not be inferred from the sequence but the structure, with some rearrangement, bears some resemblance to the active site region of cobalamin adenosyltransferase (TA1434). Specifically, TA1238 retains Arg104, which is structurally equivalent to functionally critical Arg119 of TA1434. For such conformational change, the overhand connection of TA1238 might need to be involved in a gating mechanism that might be modulated by ligands and/or by interactions with the physiological partners. This allowed us to hypothesize that TA1238 could be involved in cobalamin biosyntheses.
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| - | Crystal structure of the hypothetical protein TA1238 from Thermoplasma acidophilum: a new type of helical super-bundle.,Sanishvili R, Pennycooke M, Gu J, Xu X, Joachimiak A, Edwards AM, Christendat D J Struct Funct Genomics. 2004;5(4):231-40. PMID:15704011<ref>PMID:15704011</ref>
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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| - | </div>
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| - | <div class="pdbe-citations 1nig" style="background-color:#fffaf0;"></div>
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| - | == References ==
| + | |
| - | <references/>
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Christendat, D]] | + | [[Category: Thermoplasma acidophilum]] |
| - | [[Category: Edwards, A]] | + | [[Category: Christendat D]] |
| - | [[Category: Structural genomic]] | + | [[Category: Edwards A]] |
| - | [[Category: Sanishvili, R]] | + | [[Category: Sanishvili R]] |
| - | [[Category: Four helixbundle]]
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| - | [[Category: Mcsg]]
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| - | [[Category: PSI, Protein structure initiative]]
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| - | [[Category: Unknown function]]
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