SMTL ID : 1q4n.1

Structural studies of Phe256Trp of human salivary alpha-amylase: implications for the role of a conserved water molecule and its associated chain in enzyme activity

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.07 Å

Oligo State

monomer

Ligands

1 x CA: CALCIUM ION(Non-covalent)

CA.1: 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.3

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

CL.2: 4 residues within 4Å: Chain A: R.195, T.254, N.298, R.337 Ligand excluded by PLIP

1 x TAM: TRIS(HYDROXYETHYL)AMINOMETHANE(Non-covalent)

TAM.3: 8 residues within 4Å: Chain A: W.58, Y.62, H.101, D.197, A.198, H.201, E.233, D.300 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:H.101, A:A.198, A:H.201

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Ramasubbu, N. et al., Structural studies of a Phe256Trp mutant of human salivary alpha-amylase: implications for the role of a conserved water molecule in enzyme activity. Arch.Biochem.Biophys. (2004)

Release Date

2004-03-16

Peptides

Alpha-amylase, salivary: A

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
X

Alpha-amylase, salivary