1XF6

High resolution crystal structure of phycoerythrin 545 from the marine cryptophyte rhodomonas CS24

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Phycoerythrin alpha-3 chain	polymer	76	8135.2	1	UniProt (Q00433) Pfam (PF02972) In PDB	Rhodomonas sp. CS24	cryptophytan phycoerythrin (alpha-1 chain)
2	B	Phycoerythrin alpha-2 chain	polymer	67	7027.1	1	UniProt (P30943) Pfam (PF02972) In PDB	Rhodomonas sp. CS24	cryptophytan phycoerythrin (alpha-2 chain)
3	C, D	B-phycoerythrin beta chain	polymer	177	18539.0	2	UniProt (P27198) Pfam (PF00502) In PDB	Rhodomonas sp. CS24	cryptophytan phycoerythrin (beta chain)
4	A, D	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
5	A, B	15,16-DIHYDROBILIVERDIN	non-polymer		584.7	2	Chemie (DBV)
6	C	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
7	C, D	PHYCOERYTHROBILIN	non-polymer		588.7	6	Chemie (PEB)
8		water	water		18.0	1064	Chemie (HOH)

Sequence modifications

A: 1 - 76 (UniProt: Q00433)

PDB	External Database	Details
Lyz 4	Lys 56	modified residue

C, D: 1 - 177 (UniProt: P27198)

PDB	External Database	Details
Cys 50	Val 50	conflict
Val 56	Tyr 56	conflict
Cys 61	Glu 61	conflict
Ser 65	His 65	conflict
Men 72	Asn 72	modified residue
Cys 73	Glu 73	conflict

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	52240.3
Non-Polymers*	Number of molecules	11
	Total formula weight	4785.6
All*	Total formula weight	57025.9

*Water molecules are not included.