SMTL ID : 1n2z.4 (3 other biounits)

2.0 Angstrom structure of BtuF, the vitamin B12 binding protein of E. coli

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.00 Å

Oligo State

homo-dimer

Ligands

22 x CD: CADMIUM ION(Non-covalent)(Non-functional Binders)

CD.1: 6 residues within 4Å: Chain A: T.194, E.224 Ligands: CD.3, CL.14, CL.15, CL.17 Ligand excluded by PLIP CD.2: 3 residues within 4Å: Chain A: D.31, D.221, R.225 Ligand excluded by PLIP CD.3: 4 residues within 4Å: Chain A: T.194 Ligands: CD.1, CL.16, CL.17 Ligand excluded by PLIP CD.4: 2 residues within 4Å: Chain A: D.245 Ligands: CD.7 Ligand excluded by PLIP CD.5: 1 residues within 4Å: Chain A: R.65 Ligand excluded by PLIP CD.6: 3 residues within 4Å: Chain A: V.86, D.87, A.88 Ligand excluded by PLIP CD.7: 2 residues within 4Å: Chain A: D.245 Ligands: CD.4 Ligand excluded by PLIP CD.8: 2 residues within 4Å: Chain A: E.160, K.169 Ligand excluded by PLIP CD.9: 1 residues within 4Å: Chain A: D.109 Ligand excluded by PLIP CD.10: 2 residues within 4Å: Chain A: D.198 Chain B: D.245 Ligand excluded by PLIP CD.11: 1 residues within 4Å: Chain A: D.198 Ligand excluded by PLIP CD.12: 1 residues within 4Å: Chain A: E.70 Ligand excluded by PLIP CD.13: 0 residues within 4Å: (No contacts) Ligand excluded by PLIP CD.20: 4 residues within 4Å: Chain B: T.194, E.224 Ligands: CD.22, CL.29 Ligand excluded by PLIP CD.21: 4 residues within 4Å: Chain B: D.31, D.221, R.225 Ligands: CL.30 Ligand excluded by PLIP CD.22: 2 residues within 4Å: Chain B: T.194 Ligands: CD.20 Ligand excluded by PLIP CD.23: 1 residues within 4Å: Chain B: E.152 Ligand excluded by PLIP CD.24: 4 residues within 4Å: Chain A: W.222, R.229 Chain B: Q.128, Q.235 Ligand excluded by PLIP CD.25: 1 residues within 4Å: Ligands: CD.27 Ligand excluded by PLIP CD.26: 0 residues within 4Å: (No contacts) Ligand excluded by PLIP CD.27: 3 residues within 4Å: Chain B: D.170, R.186 Ligands: CD.25 Ligand excluded by PLIP CD.28: 2 residues within 4Å: Chain B: R.65, E.70 Ligand excluded by PLIP

6 x CL: CHLORIDE ION(Non-functional Binders)

CL.14: 4 residues within 4Å: Chain A: E.224 Ligands: CD.1, CL.15, CNC.18 Ligand excluded by PLIP CL.15: 4 residues within 4Å: Ligands: CD.1, CL.14, CL.17, CNC.18 Ligand excluded by PLIP CL.16: 6 residues within 4Å: Chain A: Q.140, F.141, G.142, I.193, T.194 Ligands: CD.3 Ligand excluded by PLIP CL.17: 4 residues within 4Å: Ligands: CD.1, CD.3, CL.15, CNC.18 Ligand excluded by PLIP CL.29: 3 residues within 4Å: Chain B: E.224 Ligands: CD.20, CNC.31 Ligand excluded by PLIP CL.30: 6 residues within 4Å: Chain B: Y.29, D.31, D.221, R.225 Ligands: CD.21, CNC.31 Ligand excluded by PLIP

2 x CNC: CYANOCOBALAMIN(Non-covalent)

CNC.18: 18 residues within 4Å: Chain A: S.9, P.10, A.11, Y.29, W.45, W.64, G.66, G.67, F.141, F.147, W.175, S.220, D.221, E.224, R.225 Ligands: CL.14, CL.15, CL.17 25 PLIP interactions: 24 interactions with chain A, 1 Ligand-Ligand interactions Hydrophobic interactions: A:P.10, A:Y.29, A:Y.29, A:Y.29, A:W.45, A:W.64, A:F.141, A:F.147, A:F.147, A:W.175, A:W.175, A:E.224 Hydrogen bonds: A:A.11, A:Y.29, A:D.221, A:D.221, A:R.225 Water bridges: A:S.9, A:S.9, A:W.45, A:W.45, A:E.224, A:A.226, A:A.226 Metal complexes: CNC.18 CNC.31: 17 residues within 4Å: Chain B: S.9, P.10, A.11, Y.29, W.45, W.64, G.66, G.67, F.141, F.147, W.175, S.220, D.221, E.224, R.225 Ligands: CL.29, CL.30 26 PLIP interactions: 25 interactions with chain B, 1 Ligand-Ligand interactions Hydrophobic interactions: B:P.10, B:Y.29, B:Y.29, B:Y.29, B:W.45, B:W.64, B:F.141, B:F.147, B:F.147, B:W.175, B:W.175, B:W.175, B:E.224 Hydrogen bonds: B:A.11, B:W.45, B:D.221, B:D.221, B:E.224, B:R.225 Water bridges: B:S.9, B:S.9, B:Y.29, B:W.45, B:S.220, B:A.226 Metal complexes: CNC.31

1 x PG4: TETRAETHYLENE GLYCOL(Non-functional Binders)

PG4.19: 2 residues within 4Å: Chain A: P.103, W.104 No protein-ligand interaction detected (PLIP)

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Borths, E.L. et al., The structure of Escherichia coli BtuF and binding to its cognate ATP binding cassette transporter. Proc.Natl.Acad.Sci.USA (2002)

Release Date

2002-12-18

Peptides

Vitamin B12 transport protein btuF: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Vitamin B12 transport protein btuF

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