1OPA

THE CRYSTAL STRUCTURES OF HOLO-AND APO-CELLULAR RETINOL BINDING PROTEIN II

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	CELLULAR RETINOL BINDING PROTEIN II	polymer	134	15606.6	2	UniProt (P06768) Pfam (PF00061) In PDB	Rattus rattus (black rat)
2		water	water		18.0	89	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	31213.1
All*	Total formula weight	31213.1

*Water molecules are not included.