8WV8

Crystal Structure of Cyanobacterial Circadian Clock Protein KaiC

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Circadian clock oscillator protein KaiC	polymer	519	58086.9	2	UniProt (Q79PF4) Pfam (PF06745) In PDB	Synechococcus elongatus
2	A, B	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	4	Chemie (ATP)
3	A, B	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
4		water	water		18.0	16	Chemie (HOH)

Sequence modifications

A, B: 1 - 519 (UniProt: Q79PF4)

PDB	External Database	Details
Cys 431	Ser 431	engineered mutation
Val 432	Thr 432	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	116173.7
Non-Polymers*	Number of molecules	8
	Total formula weight	2125.9
All*	Total formula weight	118299.7

*Water molecules are not included.