1L7V

Bacterial ABC Transporter Involved in B12 Uptake

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	VITAMIN B12 TRANSPORT SYSTEM PERMEASE PROTEIN BTUC	polymer	326	35487.9	2	UniProt (P06609) Pfam (PF01032) In PDB	Escherichia coli
2	C, D	Vitamin B12 transport ATP-binding protein btuD	polymer	249	27536.2	2	UniProt (P06611) Pfam (PF00005) In PDB	Escherichia coli	Vitamin B12-transporting ATPase
3	C, D	CYCLO-TETRAMETAVANADATE	non-polymer		395.8	2	Chemie (V4O)

Sequence modifications

A, B: 1 - 326 (UniProt: P06609)

PDB	External Database	Details
Mse 1	Met 1	MODIFIED RESIDUE
Mse 23	Met 23	MODIFIED RESIDUE
Mse 77	Met 77	MODIFIED RESIDUE
Mse 160	Met 160	MODIFIED RESIDUE
Mse 176	Met 176	MODIFIED RESIDUE
Mse 179	Met 179	MODIFIED RESIDUE
Mse 180	Met 180	MODIFIED RESIDUE
Mse 194	Met 194	MODIFIED RESIDUE
Mse 211	Met 211	MODIFIED RESIDUE
Mse 213	Met 213	MODIFIED RESIDUE
Mse 242	Met 242	MODIFIED RESIDUE

C, D: 1 - 249 (UniProt: P06611)

PDB	External Database	Details
Mse 1	Met 1	MODIFIED RESIDUE
Mse 5	Met 5	MODIFIED RESIDUE
Mse 46	Met 46	MODIFIED RESIDUE
Mse 49	Met 49	MODIFIED RESIDUE
Mse 161	Met 161	MODIFIED RESIDUE
Mse 188	Met 188	MODIFIED RESIDUE
Mse 211	Met 211	MODIFIED RESIDUE
Mse 232	Met 232	MODIFIED RESIDUE
Mse 244	Met 244	MODIFIED RESIDUE

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	126048.4
Non-Polymers*	Number of molecules	2
	Total formula weight	791.5
All*	Total formula weight	126839.9

*Water molecules are not included.