View source for 4g86


==Crystal structure of the redox-active cofactor DBMIB bound to the full length circadian clock protein KaiA from Synechococcus elongatus==
<StructureSection load='4g86' size='340' side='right'caption='[[4g86]], [[Resolution|resolution]] 2.39&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4g86]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechococcus_elongatus_PCC_7942_=_FACHB-805 Synechococcus elongatus PCC 7942 = FACHB-805]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4G86 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4G86 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]] 2.387&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1PE:PENTAETHYLENE+GLYCOL'>1PE</scene>, <scene name='pdbligand=2PE:NONAETHYLENE+GLYCOL'>2PE</scene>, <scene name='pdbligand=BNT:2,5-DIBROMO-3-ISOPROPYL-6-METHYLBENZO-1,4-QUINONE'>BNT</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</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=4g86 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4g86 OCA], [https://pdbe.org/4g86 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4g86 RCSB], [https://www.ebi.ac.uk/pdbsum/4g86 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4g86 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/KAIA_SYNE7 KAIA_SYNE7] Component of the KaiABC clock protein complex, which constitutes the main circadian regulator in cyanobacteria. The KaiABC complex may act as a promoter-nonspecific transcription regulator that represses transcription, possibly by acting on the state of chromosome compaction. In the complex, it enhances the phosphorylation status of KaiC. In contrast, the presence of KaiB in the complex decreases the phosphorylation status of KaiC, suggesting that KaiB acts by antagonizing the interaction between KaiA and KaiC. A KaiA dimer is sufficient to enhance KaiC hexamer phosphorylation.<ref>PMID:12391300</ref> <ref>PMID:12727878</ref> <ref>PMID:12727879</ref> <ref>PMID:9727980</ref> 

==See Also==
*[[Circadian clock protein 3D structures|Circadian clock protein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Synechococcus elongatus PCC 7942 = FACHB-805]]
[[Category: Egli M]]
[[Category: Pattanayek R]]