SMTL ID : 1nqh.1

OUTER MEMBRANE COBALAMIN TRANSPORTER (BTUB) FROM E. COLI, WITH BOUND CALCIUM AND CYANOCOBALAMIN (VITAMIN B12) SUBSTRATE

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 3.10 Å

Oligo State

monomer

Ligands

4 x CA: CALCIUM ION(Non-covalent)

CA.1: 6 residues within 4Å: Chain A: D.179, Q.191, D.193, D.195, D.230 Ligands: CA.2 5 PLIP interactions: 5 interactions with chain A Metal complexes: A:D.179, A:D.179, A:D.193, A:D.195, A:D.230 CA.2: 6 residues within 4Å: Chain A: D.193, D.195, Y.229, D.230, D.241 Ligands: CA.1 4 PLIP interactions: 4 interactions with chain A Metal complexes: A:D.193, A:D.195, A:Y.229, A:D.230 CA.3: 2 residues within 4Å: Chain A: E.378, E.381 2 PLIP interactions: 2 interactions with chain A Metal complexes: A:E.378, A:E.378 CA.4: 2 residues within 4Å: Chain A: F.365, D.411 No protein-ligand interaction detected (PLIP)

1 x CNC: CYANOCOBALAMIN(Non-covalent)

CNC.5: 21 residues within 4Å: Chain A: N.57, Q.62, L.63, S.65, F.67, N.72, A.73, A.88, G.89, V.90, S.91, S.93, N.185, Y.229, A.231, N.276, T.289, Y.453, R.497, Y.531, Y.579 25 PLIP interactions: 24 interactions with chain A, 1 Ligand-Ligand interactions Hydrophobic interactions: A:L.63, A:L.63, A:L.63, A:Y.229, A:Y.531 Hydrogen bonds: A:N.57, A:Q.62, A:L.63, A:S.65, A:N.72, A:V.90, A:V.90, A:S.91, A:S.91, A:N.185, A:A.231, A:N.276, A:T.289, A:T.289, A:R.497, A:R.497, A:Y.579, A:Y.579 Salt bridges: A:R.497 Metal complexes: CNC.5

6 x C8E: (HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE(Non-functional Binders)

C8E.6: 10 residues within 4Å: Chain A: I.340, L.342, A.357, R.358, S.359, R.367, G.369, T.370, W.371 Ligands: C8E.11 4 PLIP interactions: 4 interactions with chain A Hydrophobic interactions: A:I.340, A:L.342, A:A.357 Hydrogen bonds: A:R.367 C8E.7: 4 residues within 4Å: Chain A: I.380, Y.383, F.422, W.431 5 PLIP interactions: 5 interactions with chain A Hydrophobic interactions: A:I.380, A:Y.383, A:Y.383, A:F.422, A:W.431 C8E.8: 6 residues within 4Å: Chain A: W.431, I.433, A.466, A.468, Y.481 Ligands: C8E.10 2 PLIP interactions: 2 interactions with chain A Hydrophobic interactions: A:W.431, A:I.433 C8E.9: 13 residues within 4Å: Chain A: I.311, L.342, G.344, L.345, Q.346, F.353, E.354, G.355, A.356, W.371, Q.372, T.373 Ligands: C8E.11 4 PLIP interactions: 4 interactions with chain A Hydrophobic interactions: A:I.311, A:L.342 Hydrogen bonds: A:G.344, A:G.355 C8E.10: 8 residues within 4Å: Chain A: G.435, Y.436, R.437, K.462, G.463, V.464, Y.483 Ligands: C8E.8 1 PLIP interactions: 1 interactions with chain A Hydrophobic interactions: A:V.464 C8E.11: 3 residues within 4Å: Chain A: W.371 Ligands: C8E.6, C8E.9 1 PLIP interactions: 1 interactions with chain A Hydrophobic interactions: A:W.371

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

CHIMENTO, D.P. et al., Substrate-induced transmembrane signaling in the cobalamin transporter BtuB. Nat.Struct.Biol. (2003)

Release Date

2003-04-29

Peptides

VITAMIN B12 RECEPTOR: A

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

Membrane

We predict this structure to be a membrane protein.
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VITAMIN B12 RECEPTOR

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