8E0A

Crystal structure of human Sar1b

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	GTP-binding protein SAR1b	polymer	198	22435.9	2	UniProt (Q9Y6B6) Pfam (PF00025) In PDB	Homo sapiens (human)	GTP-binding protein B,GTBPB
2	A, B	SULFATE ION	non-polymer		96.1	7	Chemie (SO4)
3	A, B	GUANOSINE-5'-DIPHOSPHATE	non-polymer		443.2	2	Chemie (GDP)
4		water	water		18.0	320	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	44871.7
Non-Polymers*	Number of molecules	9
	Total formula weight	1558.8
All*	Total formula weight	46430.6

*Water molecules are not included.