3AM6

Crystal structure of the proton pumping rhodopsin AR2 from marine alga Acetabularia acetabulum

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	rhodopsin-2	polymer	229	25563.2	4	Pfam (PF01036) UniProt (by SIFTS) (G1K3Q0) In PDB	Acetabularia acetabulum (Mermaid's wine glass)	AR2
2	A, B, C, D	RETINAL	non-polymer		284.4	4	Chemie (RET)
3	A, B, C, D	CHOLESTEROL	non-polymer		386.7	8	Chemie (CLR)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	102252.7
Non-Polymers*	Number of molecules	12
	Total formula weight	4231.0
All*	Total formula weight	106483.6

*Water molecules are not included.