3MG3

Crystal structure of the orange carotenoid protein R155L mutant from cyanobacteria synechocystis sp. PCC 6803

Replaces:  3I1X

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)	Orange carotenoid-binding protein	polymer	323	35411.4	2	UniProt (P74102) Pfam (PF09150) Pfam (PF02136)	Synechocystis sp.	OCP
2	C, G (A, B)	beta,beta-caroten-4-one	non-polymer		550.9	2	Chemie (ECH)
3	D, E, F, H, I... (A, B)	GLYCEROL	non-polymer		92.1	7	Chemie (GOL)
4	L, M (A, B)	water	water		18.0	648	Chemie (HOH)

Sequence modifications

A, B: 1 - 316 (UniProt: P74102)

PDB	External Database	Details
Leu 155	Arg 155	engineered mutation
Val 317	-	expression tag
His 318	-	expression tag
His 319	-	expression tag
His 320	-	expression tag
His 321	-	expression tag
His 322	-	expression tag
His 323	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	70822.8
Non-Polymers*	Number of molecules	9
	Total formula weight	1746.4
All*	Total formula weight	72569.1

*Water molecules are not included.