2B9R

Crystal Structure of Human Cyclin B1

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Human cyclin B1	polymer	269	30840.1	2	UniProt (P14635) Pfam (PF00134) Pfam (PF02984) In PDB	Homo sapiens (human)
2		water	water		18.0	94	Chemie (HOH)

Sequence modifications

A, B: 1 - 269 (UniProt: P14635)

PDB	External Database	Details
Ser 3	Cys 167	engineered mutation
Ala 19	Glu 183	engineered mutation
Ala 20	Glu 184	engineered mutation
Ser 74	Cys 238	engineered mutation
Ser 186	Cys 350	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	61680.3
All*	Total formula weight	61680.3

*Water molecules are not included.