3K0F

Crystal structure of the phosphorylation-site double mutant T426A/T432A of the KaiC circadian clock protein

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Circadian clock protein kinase KaiC	polymer	519	58012.7	1	UniProt (Q79PF4) Pfam (PF06745)	Synechococcus elongatus PCC 7942 (Anacystis nidulans R2)
2	B, C, D, E, F (B, C, D, E, F)	Circadian clock protein kinase KaiC	polymer	519	58092.7	5	UniProt (Q79PF4) Pfam (PF06745)	Synechococcus elongatus PCC 7942 (Anacystis nidulans R2)
3	G, J, K, N, O... (A, B, C, D, E...)	MAGNESIUM ION	non-polymer		24.3	9	Chemie (MG)
4	AA, H, I, L, M... (F, A, B, C, D...)	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	12	Chemie (ATP)
5	BA, CA, DA, EA, FA... (A, B, C, D, E...)	water	water		18.0	167	Chemie (HOH)

Sequence modifications

A: 1 - 519 (UniProt: Q79PF4)

PDB	External Database	Details
Ala 426	Thr 426	engineered mutation
Ala 432	Thr 432	engineered mutation

B, C, D, E, F: 1 - 519 (UniProt: Q79PF4)

PDB	External Database	Details
Ala 426	Thr 426	engineered mutation
Ala 432	Thr 432	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	348476.2
Non-Polymers*	Number of molecules	21
	Total formula weight	6304.9
All*	Total formula weight	354781.2

*Water molecules are not included.