SMTL ID : 1mx5.1 (1 other biounit)

Crystal Structure of Human Liver Carboxylesterase in complexed with homatropine, a cocaine analogue

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.80 Å

Oligo State

homo-trimer

Ligands

3 x NAG: 2-acetamido-2-deoxy-beta-D-glucopyranose(Post Translational Modification)

NAG.1: 3 residues within 4Å: Chain A: N.61, T.63, S.64 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:N.61, A:T.63, A:S.64 NAG.6: 2 residues within 4Å: Chain B: N.61, T.63 No protein-ligand interaction detected (PLIP) NAG.10: 2 residues within 4Å: Chain C: N.61, T.63 2 PLIP interactions: 2 interactions with chain C Hydrogen bonds: C:N.61, C:T.63

2 x SIA: N-acetyl-alpha-neuraminic acid(Non-covalent)

SIA.2: 14 residues within 4Å: Chain A: L.33, G.34, N.61, A.62, T.63, S.64, Y.65, P.66, P.67, Y.100 Chain B: D.164, K.244, T.260, S.261 9 PLIP interactions: 3 interactions with chain B, 6 interactions with chain A Hydrogen bonds: B:K.244, B:S.261, B:S.261, A:N.61, A:T.63, A:S.64, A:Y.100 Hydrophobic interactions: A:N.61 Water bridges: A:K.60 SIA.7: 12 residues within 4Å: Chain B: L.33, G.34, N.61, A.62, T.63, S.64, Y.65, P.66, P.67 Chain C: K.244, T.260, S.261 14 PLIP interactions: 10 interactions with chain B, 4 interactions with chain C Hydrophobic interactions: B:N.61 Hydrogen bonds: B:L.33, B:N.61, B:T.63, B:S.64, B:S.64, B:S.64, B:Y.65, B:Y.100, C:K.244, C:K.244, C:S.261 Water bridges: B:Y.100, C:D.164

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

CL.3: 5 residues within 4Å: Chain A: G.124, G.125, S.203, A.204 Ligands: HTQ.4 Ligand excluded by PLIP

6 x HTQ: HOMOTROPINE(Non-covalent)

HTQ.4: 15 residues within 4Å: Chain A: L.79, F.83, G.124, G.125, V.128, S.203, V.236, L.237, L.286, L.340, I.341, L.344, F.407, H.449 Ligands: CL.3 10 PLIP interactions: 10 interactions with chain A Hydrophobic interactions: A:L.79, A:L.79, A:L.79, A:V.128, A:V.236, A:L.286, A:I.341, A:L.344 Hydrogen bonds: A:S.203 Salt bridges: A:H.449 HTQ.5: 8 residues within 4Å: Chain A: G.338, W.339, P.342, M.343, Y.347, L.349, S.350, K.395 5 PLIP interactions: 5 interactions with chain A Hydrophobic interactions: A:P.342, A:M.343, A:L.349 Hydrogen bonds: A:G.338 Salt bridges: A:K.395 HTQ.8: 17 residues within 4Å: Chain B: A.75, L.79, F.83, G.124, G.125, V.128, S.203, V.236, L.237, L.286, L.300, L.340, I.341, L.344, M.406, F.407, H.449 10 PLIP interactions: 10 interactions with chain B Hydrophobic interactions: B:A.75, B:L.79, B:L.79, B:V.128, B:V.236, B:L.286, B:L.300, B:I.341, B:L.344 Water bridges: B:G.125 HTQ.9: 11 residues within 4Å: Chain B: G.338, W.339, P.342, L.349, S.350, G.352, K.395, D.396, L.399, P.442, V.445 5 PLIP interactions: 5 interactions with chain B Hydrophobic interactions: B:W.339, B:K.395, B:L.399, B:P.442, B:V.445 HTQ.11: 15 residues within 4Å: Chain C: L.79, G.124, G.125, V.128, S.203, T.234, V.236, L.237, L.286, L.340, I.341, L.344, M.406, F.407, H.449 10 PLIP interactions: 10 interactions with chain C Hydrophobic interactions: C:L.79, C:V.128, C:V.236, C:L.286, C:I.341, C:L.344, C:L.344 Hydrogen bonds: C:S.203 Water bridges: C:G.125 Salt bridges: C:H.449 HTQ.12: 9 residues within 4Å: Chain C: G.338, W.339, L.349, S.350, G.352, K.395, L.399, P.442, V.445 5 PLIP interactions: 5 interactions with chain C Hydrophobic interactions: C:W.339, C:L.399, C:P.442, C:V.445 Salt bridges: C:K.395

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Bencharit, S. et al., Structural Basis of Heroin and Cocaine Metabolism by a Promiscuous Human Drug-Processing Enzyme. Nat.Struct.Biol. (2003)

Release Date

2003-04-08

Peptides

liver Carboxylesterase I: ABC

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

liver Carboxylesterase I

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