SMTL ID : 5om9.1

Crystal structure of the human CARBOXYPEPTIDASE A1 in complex with a thiirane mechanism-based inhibitor

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.80 Å

Oligo State

homo-dimer

Ligands

2 x O2S: (2~{R})-4-methyl-2-[(1~{S})-1-sulfanylethyl]pentanoic acid(Covalent)

O2S.1: 13 residues within 4Å: Chain A: H.179, E.182, R.237, N.254, R.255, H.306, M.313, I.353, Y.358, A.360, T.378, E.380 Ligands: ZN.2 10 PLIP interactions: 10 interactions with chain A Hydrophobic interactions: A:I.353, A:A.360, A:T.378, A:E.380 Hydrogen bonds: A:N.254, A:Y.358, A:Y.358 Salt bridges: A:H.179, A:R.237, A:R.255 O2S.3: 14 residues within 4Å: Chain B: R.54, H.179, E.182, R.237, N.254, R.255, H.306, M.313, I.353, Y.358, A.360, T.378, E.380 Ligands: ZN.4 9 PLIP interactions: 9 interactions with chain B Hydrophobic interactions: B:Y.358, B:A.360, B:T.378, B:E.380 Hydrogen bonds: B:N.254 Salt bridges: B:H.179, B:R.237, B:R.255, B:H.306

3 x ZN: ZINC ION(Non-covalent)

ZN.2: 5 residues within 4Å: Chain A: H.179, E.182, H.306, S.307 Ligands: O2S.1 4 PLIP interactions: 4 interactions with chain A Metal complexes: A:H.179, A:E.182, A:E.182, A:H.306 ZN.4: 4 residues within 4Å: Chain B: H.179, E.182, H.306 Ligands: O2S.3 4 PLIP interactions: 4 interactions with chain B Metal complexes: B:H.179, B:E.182, B:E.182, B:H.306 ZN.5: 3 residues within 4Å: Chain B: E.412, N.416, H.417 3 PLIP interactions: 3 interactions with chain B Metal complexes: B:E.412, B:E.412, B:H.417

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Testero, S.A. et al., Discovery of Mechanism-Based Inactivators for Human Pancreatic Carboxypeptidase A from a Focused Synthetic Library. ACS Med Chem Lett (2017)

Release Date

2017-08-09

Peptides

Carboxypeptidase A1: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Carboxypeptidase A1