4R7Y

Crystal structure of an active MCM hexamer

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Minichromosome maintenance protein MCM, Cell division control protein 21	polymer	613	69472.3	2	UniProt (Q9UXG1) UniProt (Q8U3I4) Pfam (PF14551) Pfam (PF17207) Pfam (PF00493) Pfam (PF17855)	Sulfolobus solfataricus
2	C, I (A, B)	ADENOSINE-5'-DIPHOSPHATE	non-polymer		427.2	2	Chemie (ADP)
3	D, J (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4	E, K (A, B)	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
5	F, G, H, L, M... (A, B)	CHLORIDE ION	non-polymer		35.5	6	Chemie (CL)

Sequence modifications

A, B: 2 - 269 (UniProt: Q9UXG1)

PDB	External Database	Details
Ser 0	-	expression tag
Leu 1	-	expression tag

A, B: 1257 - 1361 (UniProt: Q8U3I4)
A, B: 1729 - 1966 (UniProt: Q8U3I4)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	138944.7
Non-Polymers*	Number of molecules	12
	Total formula weight	1246.5
All*	Total formula weight	140191.2

*Water molecules are not included.