SMTL ID : 2fi4.7 (6 other biounits)

Crystal structure of a BPTI variant (Cys14->Ser) in complex with trypsin

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.58 Å

Oligo State

hetero-1-1-mer

Ligands

1 x NA: SODIUM ION(Non-functional Binders)

NA.1: 3 residues within 4Å: Chain A: D.53, E.59, V.134 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:D.53

2 x CA: CALCIUM ION(Non-covalent)

CA.2: 4 residues within 4Å: Chain A: E.52, N.54, V.57, 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.2, H2O.5 CA.11: 2 residues within 4Å: Chain B: Q.31, T.32 No protein-ligand interaction detected (PLIP)

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

SO4.3: 3 residues within 4Å: Chain A: K.43, S.44 Chain B: K.46 6 PLIP interactions: 5 interactions with chain A, 1 interactions with chain B Hydrogen bonds: A:S.44, A:S.44 Water bridges: A:K.43, A:K.43 Salt bridges: A:K.43, B:K.46 SO4.4: 3 residues within 4Å: Chain A: K.149, P.153, G.154 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:G.154 Water bridges: A:Q.155, A:Q.155 SO4.12: 4 residues within 4Å: Chain A: K.69, K.89 Chain B: R.1, R.42 11 PLIP interactions: 4 interactions with chain B, 7 interactions with chain A Water bridges: B:R.42, B:R.42, A:S.68, A:S.68, A:K.69, A:K.69, A:K.91 Salt bridges: B:R.1, B:R.42, A:K.69, A:K.89 SO4.13: 4 residues within 4Å: Chain B: R.20, Y.35, G.37, A.40 3 PLIP interactions: 3 interactions with chain B Hydrogen bonds: B:Y.35 Water bridges: B:R.39 Salt bridges: B:R.20 SO4.14: 4 residues within 4Å: Chain B: P.9, Y.10, T.11, G.12 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:T.11, B:G.12 SO4.15: 4 residues within 4Å: Chain A: K.91, S.92, A.93 Chain B: R.1 2 PLIP interactions: 1 interactions with chain A, 1 interactions with chain B Hydrogen bonds: A:A.93 Salt bridges: B:R.1 SO4.16: 4 residues within 4Å: Chain B: F.4, E.7, K.41, R.42 7 PLIP interactions: 7 interactions with chain B Hydrogen bonds: B:R.42 Water bridges: B:F.4, B:E.7, B:K.41, B:R.42, B:N.43 Salt bridges: B:R.42 SO4.17: 3 residues within 4Å: Chain A: Q.33, K.89 Chain B: R.1 5 PLIP interactions: 4 interactions with chain A, 1 interactions with chain B Hydrogen bonds: A:Q.33 Water bridges: A:K.89, A:K.89 Salt bridges: A:K.89, B:R.1

6 x EDO: 1,2-ETHANEDIOL(Non-functional Binders)

EDO.5: 4 residues within 4Å: Chain A: P.132, D.133, V.134, K.136 5 PLIP interactions: 5 interactions with chain A Hydrogen bonds: A:D.133, A:V.134, A:K.136, A:K.136 Water bridges: A:T.124 EDO.6: 6 residues within 4Å: Chain A: C.109, A.110, F.161, Q.188, K.208, C.210 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:A.110, A:Q.188, A:K.208, A:K.208 EDO.7: 5 residues within 4Å: Chain A: Y.5, C.7, T.11, L.117, C.137 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:Y.5, A:C.7, A:T.11 EDO.8: 3 residues within 4Å: Chain A: I.30, N.31, K.217 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:N.31 EDO.9: 4 residues within 4Å: Chain A: N.79, T.80, Q.155, W.193 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:T.80, A:Q.155 EDO.10: 4 residues within 4Å: Chain A: S.32, A.94, S.95, L.96 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:L.96, A:L.96 Water bridges: A:S.32, A:S.32

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Zakharova, E. et al., Functional and structural roles of the Cys14-Cys38 disulfide of bovine pancreatic trypsin inhibitor. J.Mol.Biol. (2008)

Release Date

2006-01-24

Peptides

Cationic trypsin: A
Pancreatic trypsin inhibitor: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
E

B
I

Cationic trypsin

Pancreatic trypsin inhibitor

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