SMTL ID : 6mrq.1

Structure of ToPI1 inhibitor from Tityus obscurus scorpion venom in complex with trypsin

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 1.29 Å

Oligo State

hetero-1-1-mer

Ligands

1 x CA: CALCIUM ION(Non-covalent)

CA.1: 8 residues within 4Å: Chain A: E.52, D.53, N.54, I.55, V.57, V.58, E.59, E.62 6 PLIP interactions: 4 interactions with chain A, 2 Ligand-Water interactions Metal complexes: A:E.52, A:N.54, A:V.57, A:E.62, H2O.1, H2O.4

3 x SO4: SULFATE ION(Non-functional Binders)

SO4.2: 4 residues within 4Å: Chain A: N.77, T.80, N.82, N.83 5 PLIP interactions: 5 interactions with chain A Hydrogen bonds: A:N.77, A:T.80, A:T.80, A:N.82, A:N.83 SO4.3: 3 residues within 4Å: Chain A: S.144, D.145, S.146 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:D.145, A:S.146, A:S.146 Water bridges: A:S.146 SO4.4: 2 residues within 4Å: Chain A: S.214, Q.218 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:S.214, A:S.214

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Mourao, C.B.F. et al., Head-to-Tail Cyclization after Interaction with Trypsin: A Scorpion Venom Peptide that Resembles Plant Cyclotides. J.Med.Chem. (2020)

Release Date

2020-07-01

Peptides

Cationic trypsin: A
inhibitor from Tityus obscurus scorpion venom (TopI1): B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
I

Cationic trypsin

inhibitor from Tityus obscurus scorpion venom (TopI1)