4YMS

Crystal structure of an amino acid ABC transporter

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (J, A)	ABC-type polar amino acid transport system, ATPase component	polymer	240	26821.5	2	UniProt (Q8RCC2) Pfam (PF00005)	Caldanaerobacter subterraneus subsp. tengcongensis MB4	NBD
2	C, D (D, C)	ABC-type amino acid transport system, permease component	polymer	220	24245.1	2	UniProt (Q8RCC3) Pfam (PF00528)	Caldanaerobacter subterraneus subsp. tengcongensis MB4	TMD

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	102133.2
All*	Total formula weight	102133.2

*Water molecules are not included.