SMTL ID : 1ppi.1

THE ACTIVE CENTER OF A MAMMALIAN ALPHA-AMYLASE. THE STRUCTURE OF THE COMPLEX OF A PANCREATIC ALPHA-AMYLASE WITH A CARBOHYDRATE INHIBITOR REFINED TO 2.2 ANGSTROMS RESOLUTION

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.20 Å

Oligo State

monomer

Ligands

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

GLC-GLC.1: 11 residues within 4Å: Chain A: W.58, W.59, Y.62, Q.63, G.104, V.163, G.164, L.165, D.300, H.305 Ligands: BGC-DAF.2 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:W.59 Water bridges: A:Q.63

1 x BGC- DAF: 4,6-dideoxy-4-{[(1S,5R,6S)-3-formyl-5,6-dihydroxy-4-oxocyclohex-2-en-1-yl]amino}-alpha-D-xylo-hex-5-enopyranose-(1-4)-beta-D-glucopyranose(Non-covalent)

BGC-DAF.2: 17 residues within 4Å: Chain A: W.58, Y.62, H.101, Y.151, L.162, R.195, D.197, A.198, K.200, H.201, E.233, I.235, E.240, H.299, D.300, G.306 Ligands: GLC-GLC.1 9 PLIP interactions: 9 interactions with chain A Hydrogen bonds: A:K.200, A:K.200, A:K.200, A:E.240, A:H.101, A:Y.151, A:R.195, A:R.195, A:H.201, A:E.233, A:E.233, A:H.299 Water bridges: A:Y.151, A:N.298

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

CL.3: 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(Non-covalent)

CA.4: 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.2

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Qian, M. et al., The active center of a mammalian alpha-amylase. Structure of the complex of a pancreatic alpha-amylase with a carbohydrate inhibitor refined to 2.2-A resolution. Biochemistry (1994)

Release Date

1995-05-24

Peptides

ALPHA-AMYLASE: A

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

ALPHA-AMYLASE