3QF4

Crystal structure of a heterodimeric ABC transporter in its inward-facing conformation

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	ABC transporter, ATP-binding protein	polymer	587	65060.8	1	UniProt (Q9WYC3) Pfam (PF00664) Pfam (PF00005) In PDB	Thermotoga maritima	ABC transporter TM287
2	B	Uncharacterized ABC transporter ATP-binding protein TM_0288	polymer	598	67789.9	1	UniProt (Q9WYC4) Pfam (PF00664) Pfam (PF00005) In PDB	Thermotoga maritima	ABC transporter TM288
3	A	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	non-polymer		506.2	1	Chemie (ANP)
4	A	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
5		water	water		18.0	4	Chemie (HOH)

Sequence modifications

A: 2 - 577 (UniProt: Q9WYC3)

PDB	External Database	Details
Gly -9	-	expression tag
Pro -8	-	expression tag
Ser -7	-	expression tag
Gly -6	-	expression tag
Ser -5	-	expression tag
Gly -4	-	expression tag
Gly -3	-	expression tag
Gly -2	-	expression tag
Gly -1	-	expression tag
Gly 0	-	expression tag
Ser 1	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	132850.7
Non-Polymers*	Number of molecules	2
	Total formula weight	530.5
All*	Total formula weight	133381.2

*Water molecules are not included.