SMTL ID : 1cpu.1

SUBSITE MAPPING OF THE ACTIVE SITE OF HUMAN PANCREATIC ALPHA-AMYLASE USING SUBSTRATES, THE PHARMACOLOGICAL INHIBITOR ACARBOSE, AND AN ACTIVE SITE VARIANT

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.00 Å

Oligo State

monomer

Ligands

3 x GLC: ALPHA-D-GLUCOSE(Non-covalent)

GLC.1: 5 residues within 4Å: Chain A: Y.151, K.200, I.235, E.240 Ligands: AGL.2 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:Y.151, A:K.200, A:E.240 GLC.3: 9 residues within 4Å: Chain A: W.58, W.59, Y.62, Q.63, D.300, H.305 Ligands: AGL.2, GLC.4, HMC.8 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:Q.63, A:T.163, A:D.300, A:H.305 GLC.4: 7 residues within 4Å: Chain A: W.59, Q.63, G.104, T.163, G.164, L.165 Ligands: GLC.3 1 PLIP interactions: 1 interactions with chain A Water bridges: A:N.105

1 x AGL: 4,6-DIDEOXY-4-AMINO-ALPHA-D-GLUCOSE(Non-covalent)

AGL.2: 9 residues within 4Å: Chain A: Y.151, A.198, H.201, E.233, D.300, H.305 Ligands: GLC.1, GLC.3, HMC.8 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:A.198, A:H.201, A:E.233 Water bridges: A:I.235

1 x NAG: N-ACETYL-D-GLUCOSAMINE(Post Translational Modification)

NAG.5: 2 residues within 4Å: Chain A: N.459, N.461 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:N.461

1 x CA: CALCIUM ION(Non-covalent)

CA.6: 4 residues within 4Å: Chain A: N.100, R.158, D.167, H.201 5 PLIP interactions: 4 interactions with chain A, 1 Ligand-Water interactions Metal complexes: A:R.158, A:D.167, A:D.167, A:H.201, H2O.2

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

CL.7: 4 residues within 4Å: Chain A: R.195, T.254, N.298, R.337 Ligand excluded by PLIP

1 x HMC: 5-HYDROXYMETHYL-CHONDURITOL(Non-covalent)

HMC.8: 11 residues within 4Å: Chain A: W.58, Y.62, H.101, L.162, R.195, D.197, E.233, H.299, D.300 Ligands: AGL.2, GLC.3 7 PLIP interactions: 7 interactions with chain A Hydrophobic interactions: A:Y.62 Hydrogen bonds: A:H.101, A:R.195, A:R.195, A:E.233, A:H.299 Water bridges: A:D.300

Links

RCSB   PDBe   PDBj   PDBsum   CATH   PLIP

Citation

Brayer, G.D. et al., Subsite mapping of the human pancreatic alpha-amylase active site through structural, kinetic, and mutagenesis techniques. Biochemistry (2000)

Release Date

1999-06-14

Peptides

PROTEIN (ALPHA-AMYLASE): A

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

PROTEIN (ALPHA-AMYLASE)

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