SMTL ID : 1hx0.1

Structure of pig pancreatic alpha-amylase complexed with the "truncate" acarbose molecule (pseudotrisaccharide)

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.38 Å

Oligo State

monomer

Ligands

1 x GLC- AC1- GLC- AC1: 4,6-dideoxy-4-{[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl]amino}-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-4,6-dideoxy-4-{[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl]amino}-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose

GLC-AC1-GLC-AC1.1: 26 residues within 4Å: Chain A: W.58, W.59, Y.62, Q.63, H.101, G.104, S.105, G.106, A.107, Y.151, V.163, G.164, L.165, R.195, D.197, A.198, K.200, H.201, E.233, I.235, E.240, H.299, D.300, H.305, G.306, A.307 3 PLIP interactions: 3 interactions with chain A Hydrophobic interactions: A:L.165 Hydrogen bonds: A:G.104, A:G.106, A:Q.63, A:D.300, A:H.305 Water bridges: A:Q.63

1 x GLC- GLC: alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose(Non-covalent)

GLC-GLC.2: 8 residues within 4Å: Chain A: K.261, E.272, Y.276, N.279, G.283, W.284, G.285 Ligands: EDO.18 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:K.261, A:K.261

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

CL.3: 4 residues within 4Å: Chain A: R.195, T.254, N.298, R.337 Ligand excluded by PLIP CL.4: 3 residues within 4Å: Chain A: W.203, P.204, G.205 Ligand excluded by PLIP CL.6: 5 residues within 4Å: Chain A: N.137, K.140, A.169, L.170, E.171 Ligand excluded by PLIP CL.7: 3 residues within 4Å: Chain A: N.216, A.224, G.225 Ligand excluded by PLIP

1 x CA: CALCIUM ION(Non-covalent)

CA.5: 4 residues within 4Å: Chain A: N.100, R.158, D.167, H.201 5 PLIP interactions: 3 interactions with chain A, 2 Ligand-Water interactions Metal complexes: A:R.158, A:D.167, A:H.201, H2O.1, H2O.1

12 x EDO: 1,2-ETHANEDIOL(Non-functional Binders)

EDO.8: 4 residues within 4Å: Chain A: R.30, I.372, T.376, R.387 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:R.30, A:R.387, A:R.387 Water bridges: A:T.376 EDO.9: 7 residues within 4Å: Chain A: I.465, K.466, V.467, Q.476, F.477, S.478 Ligands: EDO.12 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:S.478, A:S.478 Water bridges: A:Y.468, A:Q.476 EDO.10: 7 residues within 4Å: Chain A: I.49, V.50, A.108, A.109, G.110, T.111, G.112 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:V.50, A:G.110, A:G.112 EDO.11: 4 residues within 4Å: Chain A: K.322, W.388, E.390 Ligands: EDO.14 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:K.322, A:E.390 EDO.12: 5 residues within 4Å: Chain A: K.466, V.467, Y.468, Q.476 Ligands: EDO.9 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:K.466, A:Y.468, A:Q.476 Water bridges: A:Q.476 EDO.13: 7 residues within 4Å: Chain A: R.267, N.301, Q.302, G.309, S.310, I.312, T.314 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:R.267, A:I.312 Water bridges: A:Q.302 EDO.14: 6 residues within 4Å: Chain A: A.318, R.319, K.322, E.484, D.485 Ligands: EDO.11 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:K.322, A:E.484 EDO.15: 8 residues within 4Å: Chain A: Y.342, R.343, I.358, G.359, P.360, P.361, N.362, D.381 5 PLIP interactions: 5 interactions with chain A Hydrogen bonds: A:G.359, A:N.362, A:D.381, A:D.381 Water bridges: A:N.362 EDO.16: 4 residues within 4Å: Chain A: R.20, R.72, S.73, G.74 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:R.20, A:R.20 EDO.17: 5 residues within 4Å: Chain A: Q.1, L.211, R.227, P.228, I.230 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:L.211, A:R.227, A:P.228 EDO.18: 2 residues within 4Å: Chain A: Y.276 Ligands: GLC-GLC.2 1 PLIP interactions: 1 interactions with chain A Water bridges: A:Y.276 EDO.19: 4 residues within 4Å: Chain A: S.437, S.438, T.439, Q.476 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:S.438, A:Q.476

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Qian, M. et al., Enzyme-catalyzed condensation reaction in a mammalian alpha-amylase. High-resolution structural analysis of an enzyme-inhibitor complex. Biochemistry (2001)

Release Date

2001-08-08

Peptides

ALPHA AMYLASE (PPA): A

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

ALPHA AMYLASE (PPA)

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