4YMW

Crystal structure of an amino acid ABC transporter with histidines

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
3	E, F (D, C)	HISTIDINE	non-polymer		156.2	2	Chemie (HIS)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	102133.2
Non-Polymers*	Number of molecules	2
	Total formula weight	312.3
All*	Total formula weight	102445.5

*Water molecules are not included.