7ZSF

Structure of Orange Carotenoid Protein with canthaxanthin bound

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Orange carotenoid-binding protein	polymer	327	35875.9	1	UniProt (P74102) Pfam (PF09150) Pfam (PF02136) In PDB	Synechocystis	OCP
2	A	beta,beta-carotene-4,4'-dione	non-polymer		564.8	1	Chemie (45D)
3	A	GLYCEROL	non-polymer		92.1	1	Chemie (GOL)
4	A	ACETATE ION	non-polymer		59.0	1	Chemie (ACT)
5	A	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
6		water	water		18.0	388	Chemie (HOH)

Sequence modifications

A: 1 - 317 (UniProt: P74102)

PDB	External Database	Details
Met -9	-	initiating methionine
Gly -8	-	expression tag
Ser -7	-	expression tag
Ser -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	35875.9
Non-Polymers*	Number of molecules	4
	Total formula weight	751.4
All*	Total formula weight	36627.3

*Water molecules are not included.