7QD1

Structure of the orange carotenoid protein from Planktothrix agardhii binding echinenone in the P21 space group

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Orange carotenoid-binding protein	polymer	319	35352.4	2	UniProt (A0A1J1JHR9) Pfam (PF09150) Pfam (PF02136) In PDB	Planktothrix agardhii (Oscillatoria agardhii)
2	A, C	beta,beta-caroten-4-one	non-polymer		550.9	2	Chemie (ECH)
3		water	water		18.0	704	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	70704.9
Non-Polymers*	Number of molecules	2
	Total formula weight	1101.7
All*	Total formula weight	71806.6

*Water molecules are not included.