3LKB

Crystal structure of a branched chain amino acid ABC transporter from Thermus thermophilus with bound valine

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Probable branched-chain amino acid ABC transporter, amino acid binding protein	polymer	392	43292.1	2	UniProt (Q5SL42) Pfam (PF13458) In PDB	Thermus thermophilus
2	A, B	VALINE	non-polymer		117.1	2	Chemie (VAL)
3	A, B	ISOPROPYL ALCOHOL	non-polymer		60.1	2	Chemie (IPA)
4	A, B	SODIUM ION	non-polymer		23.0	2	Chemie (NA)
5		water	water		18.0	129	Chemie (HOH)

Sequence modifications

A, B: 3 - 384 (UniProt: Q5SL42)

PDB	External Database	Details
Met 1	-	expression tag
Ser 2	-	expression tag
Ala 293	Val 315	engineered mutation
Ala 295	Ser 317	engineered mutation
Glu 385	-	expression tag
Gly 386	-	expression tag
His 387	-	expression tag
His 388	-	expression tag
His 389	-	expression tag
His 390	-	expression tag
His 391	-	expression tag
His 392	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	86584.1
Non-Polymers*	Number of molecules	6
	Total formula weight	400.5
All*	Total formula weight	86984.6

*Water molecules are not included.