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3K09

Crystal structure of the phosphorylation-site mutant S431D of the KaiC circadian clock protein

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, E
(A, B, E)
Circadian clock protein kinase kaiCpolymer51958180.83UniProt (Q79PF4)
Pfam (PF06745)
Synechococcus elongatus PCC 7942 (Anacystis nidulans R2)
2C, D, F
(C, D, F)
Circadian clock protein kinase kaiCpolymer51958100.83UniProt (Q79PF4)
Pfam (PF06745)
Synechococcus elongatus PCC 7942 (Anacystis nidulans R2)
3BA, CA, DA, EA, G...
(E, A, F, B, C...)
MAGNESIUM IONnon-polymer24.320Chemie (MG)
4AA, FA, GA, K, KA...
(D, E, A, F, B...)
ADENOSINE-5'-TRIPHOSPHATEnon-polymer507.212Chemie (ATP)
5MA, NA, OA, PA, QA...
(A, B, C, D, E...)
waterwater18.053Chemie (HOH)
Sequence modifications
A, B, E: 1 - 519 (UniProt: Q79PF4)
PDBExternal DatabaseDetails
Asp 431Ser 431engineered mutation
C, D, F: 1 - 519 (UniProt: Q79PF4)
PDBExternal DatabaseDetails
Asp 431Ser 431engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains6
Total formula weight348844.6
Non-Polymers*Number of molecules32
Total formula weight6572.3
All*Total formula weight355416.9
*Water molecules are not included.

246031

PDB entries from 2025-12-10

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