SMTL ID : 5xw1.1

Crystal Structure of Porcine pancreatic trypsin with tripeptide inhibitor, PRN, at pH10

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.90 Å

Oligo State

hetero-1-1-mer

Ligands

1 x ACE- PRO- ARG: Acetylated-Pro-Arg-Asn Inhibitor(Non-covalent)

ACE-PRO-ARG.1: 15 residues within 4Å: Chain A: H.48, L.89 Chain B: D.46, S.47, C.48, Q.49, G.50, D.51, S.52, S.67, W.68, G.69, G.71, C.72, G.79 14 PLIP interactions: 13 interactions with chain B, 1 interactions with chain A Hydrogen bonds: B:S.47, B:S.47, B:Q.49, B:G.50, B:D.51, B:S.52, B:S.52, B:S.67, B:G.69, B:G.71 Water bridges: B:D.46, B:V.80 Salt bridges: B:D.46 Hydrophobic interactions: A:L.89

1 x CA: CALCIUM ION(Non-covalent)

CA.2: 5 residues within 4Å: Chain A: E.60, N.62, V.65, E.67, E.70 6 PLIP interactions: 5 interactions with chain A, 1 Ligand-Water interactions Metal complexes: A:E.60, A:N.62, A:V.65, A:E.67, A:E.70, H2O.2

3 x MPD: (4S)-2-METHYL-2,4-PENTANEDIOL(Non-functional Binders)

MPD.3: 5 residues within 4Å: Chain A: T.88 Chain B: Q.30, W.68, G.69, Y.70 3 PLIP interactions: 1 interactions with chain A, 2 interactions with chain B Water bridges: A:N.87 Hydrophobic interactions: B:W.68 Hydrogen bonds: B:Q.30 MPD.4: 1 residues within 4Å: Chain B: T.32 1 PLIP interactions: 1 interactions with chain B Hydrophobic interactions: B:T.32 MPD.5: 6 residues within 4Å: Chain A: E.123 Chain B: K.14, V.57, C.58, N.59, G.60 6 PLIP interactions: 5 interactions with chain B, 1 interactions with chain A Hydrophobic interactions: B:K.14, B:V.57, A:E.123 Hydrogen bonds: B:V.57, B:N.59, B:G.60

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Joshi, R.S. et al., Reactive centre loop peptides devoid of potato protease inhibitor-II protein scaffold inhibit serine proteases. To Be Published

Release Date

2018-07-04

Peptides

Trypsin: A
Trypsin: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Trypsin

Trypsin

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