SMTL ID : 1b2y.1

STRUCTURE OF HUMAN PANCREATIC ALPHA-AMYLASE IN COMPLEX WITH THE CARBOHYDRATE INHIBITOR ACARBOSE

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 3.20 Å

Oligo State

monomer

Ligands

1 x G6D: 6-DEOXY-ALPHA-D-GLUCOSE

G6D.1: 5 residues within 4Å: Chain A: W.59, Q.63, T.163, L.165 Ligands: GLC.2 1 PLIP interactions: 1 interactions with chain A Hydrophobic interactions: A:L.165

1 x GLC: ALPHA-D-GLUCOSE(Non-functional Binders)

GLC.2: 9 residues within 4Å: Chain A: W.58, W.59, Y.62, Q.63, T.163, D.300, H.305 Ligands: G6D.1, AC1.3 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:Q.63, A:D.300, A:H.305 Water bridges: A:G.306

1 x AC1: 6-METHYL-5-(4,5,6-TRIHYDROXY-3-HYDROXYMETHYL-CYCLOHEX-2-ENYLAMINO)-TETRAHYDRO-PYRAN-2,3,4-TRIOL(Non-covalent)

AC1.3: 13 residues within 4Å: Chain A: W.58, Y.62, H.101, R.195, D.197, A.198, H.201, E.233, I.235, H.299, D.300 Ligands: GLC.2, BGC.4 10 PLIP interactions: 10 interactions with chain A Hydrogen bonds: A:H.101, A:R.195, A:R.195, A:A.198, A:H.201, A:E.233, A:E.233 Water bridges: A:I.235, A:D.300, A:D.300

1 x BGC: BETA-D-GLUCOSE(Covalent)

BGC.4: 6 residues within 4Å: Chain A: Y.151, K.200, I.235, E.240, G.306 Ligands: AC1.3 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:K.200, A:K.200 Salt bridges: A:K.200

1 x CL: CHLORIDE ION

CL.5: 5 residues within 4Å: Chain A: R.195, E.233, T.254, N.298, R.337 Ligand excluded by PLIP

1 x CA: CALCIUM ION

CA.6: 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.2112, H2O.2112

1 x PCA: PYROGLUTAMIC ACID

PCA.7: 6 residues within 4Å: Chain A: Y.2, S.3, P.228, F.229, I.230, N.250 5 PLIP interactions: 4 interactions with chain A, 1 Ligand-Ligand interactions Hydrogen bonds: A:Y.2, A:I.230 pi-Stacking: A:Y.2 Water bridges: A:S.3, E.7

Links

RCSB   PDBsum   PDBe   CATH   PLIP

Citation

Nahoum, V. et al., Crystal structures of human pancreatic alpha-amylase in complex with carbohydrate and proteinaceous inhibitors. Biochem.J. (2000)

Peptides

PROTEIN (ALPHA-AMYLASE): A

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

PROTEIN (ALPHA-AMYLASE)