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==GCN4-LEUCINE ZIPPER CORE MUTANT ASN16ABA IN THE TRIMERIC STATE== | |||
<StructureSection load='1zij' size='340' side='right'caption='[[1zij]], [[Resolution|resolution]] 2.00Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1zij]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZIJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ZIJ 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]] 2Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ABA:ALPHA-AMINOBUTYRIC+ACID'>ABA</scene>, <scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</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=1zij FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zij OCA], [https://pdbe.org/1zij PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1zij RCSB], [https://www.ebi.ac.uk/pdbsum/1zij PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1zij ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/GCN4_YEAST GCN4_YEAST] Is a transcription factor that is responsible for the activation of more than 30 genes required for amino acid or for purine biosynthesis in response to amino acid or purine starvation. Binds and recognize the DNA sequence: 5'-TGA[CG]TCA-3'. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Each protein sequence generally adopts a single native fold, but the sequence features that confer structural uniqueness are not well understood. To define the basis for structural heterogeneity, we determined the high resolution X-ray crystal structures of a single GCN4 leucine-zipper mutant (Asn 16 to aminobutyric acid) in both dimeric and trimeric coiled-coil conformations. The mutant sequence is accommodated in two distinct structures by forming similarly-shaped packing surfaces with different sets of atoms. The trimer structure, in comparison to a previously-characterized trimeric mutant with substitutions in eight core residues, shows that the twist of individual helices and the helix-helix crossing angles can vary significantly to produce the most favoured packing arrangement. | |||
Crystal structures of a single coiled-coil peptide in two oligomeric states reveal the basis for structural polymorphism.,Gonzalez L Jr, Brown RA, Richardson D, Alber T Nat Struct Biol. 1996 Dec;3(12):1002-9. PMID:8946853<ref>PMID:8946853</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1zij" style="background-color:#fffaf0;"></div> | |||
== | ==See Also== | ||
*[[Gcn4 3D Structures|Gcn4 3D Structures]] | |||
*[[Gnc4 3D Structures|Gnc4 3D Structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Saccharomyces cerevisiae]] | [[Category: Saccharomyces cerevisiae]] | ||
[[Category: Alber T]] | |||
[[Category: Alber | [[Category: Brown RA]] | ||
[[Category: Brown | [[Category: Gonzalez Junior L]] | ||
[[Category: Junior | [[Category: Richardson D]] | ||
[[Category: Richardson | |||
Latest revision as of 13:31, 16 August 2023
GCN4-LEUCINE ZIPPER CORE MUTANT ASN16ABA IN THE TRIMERIC STATEGCN4-LEUCINE ZIPPER CORE MUTANT ASN16ABA IN THE TRIMERIC STATE
Structural highlights
FunctionGCN4_YEAST Is a transcription factor that is responsible for the activation of more than 30 genes required for amino acid or for purine biosynthesis in response to amino acid or purine starvation. Binds and recognize the DNA sequence: 5'-TGA[CG]TCA-3'. Publication Abstract from PubMedEach protein sequence generally adopts a single native fold, but the sequence features that confer structural uniqueness are not well understood. To define the basis for structural heterogeneity, we determined the high resolution X-ray crystal structures of a single GCN4 leucine-zipper mutant (Asn 16 to aminobutyric acid) in both dimeric and trimeric coiled-coil conformations. The mutant sequence is accommodated in two distinct structures by forming similarly-shaped packing surfaces with different sets of atoms. The trimer structure, in comparison to a previously-characterized trimeric mutant with substitutions in eight core residues, shows that the twist of individual helices and the helix-helix crossing angles can vary significantly to produce the most favoured packing arrangement. Crystal structures of a single coiled-coil peptide in two oligomeric states reveal the basis for structural polymorphism.,Gonzalez L Jr, Brown RA, Richardson D, Alber T Nat Struct Biol. 1996 Dec;3(12):1002-9. PMID:8946853[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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