SMTL ID : 2fi5.4 (6 other biounits)

Crystal structure of a BPTI variant (Cys38->Ser) in complex with trypsin

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 1.58 Å

Oligo State

hetero-2-2-mer

Ligands

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

NA.1: 2 residues within 4Å: Chain A: D.53, E.59 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:D.53 NA.19: 2 residues within 4Å: Chain C: D.53, E.59 2 PLIP interactions: 2 interactions with chain C Hydrogen bonds: C:D.53, C:E.59

4 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.1, H2O.2 CA.12: 5 residues within 4Å: Chain B: Q.31, T.32 Chain D: Q.31, T.32 Ligands: CA.30 No protein-ligand interaction detected (PLIP) CA.20: 4 residues within 4Å: Chain C: E.52, N.54, V.57, E.62 6 PLIP interactions: 4 interactions with chain C, 2 Ligand-Water interactions Metal complexes: C:E.52, C:N.54, C:V.57, C:E.62, H2O.11, H2O.12 CA.30: 5 residues within 4Å: Chain B: Q.31, T.32 Chain D: Q.31, T.32 Ligands: CA.12 No protein-ligand interaction detected (PLIP)

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

SO4.3: 3 residues within 4Å: Chain A: K.149, P.153, G.154 Ligand excluded by PLIP SO4.4: 3 residues within 4Å: Chain A: K.43, S.44 Chain B: K.46 Ligand excluded by PLIP SO4.13: 4 residues within 4Å: Chain B: F.4, E.7, K.41, R.42 Ligand excluded by PLIP SO4.14: 4 residues within 4Å: Chain B: R.20, Y.35, G.37, A.40 Ligand excluded by PLIP SO4.15: 2 residues within 4Å: Chain B: R.1, R.42 Ligand excluded by PLIP SO4.16: 4 residues within 4Å: Chain B: P.9, Y.10, T.11, G.12 Ligand excluded by PLIP SO4.17: 1 residues within 4Å: Chain B: R.1 Ligand excluded by PLIP SO4.18: 1 residues within 4Å: Chain B: R.1 Ligand excluded by PLIP SO4.21: 3 residues within 4Å: Chain C: K.149, P.153, G.154 Ligand excluded by PLIP SO4.22: 3 residues within 4Å: Chain C: K.43, S.44 Chain D: K.46 Ligand excluded by PLIP SO4.31: 4 residues within 4Å: Chain D: F.4, E.7, K.41, R.42 Ligand excluded by PLIP SO4.32: 4 residues within 4Å: Chain D: R.20, Y.35, G.37, A.40 Ligand excluded by PLIP SO4.33: 2 residues within 4Å: Chain D: R.1, R.42 Ligand excluded by PLIP SO4.34: 4 residues within 4Å: Chain D: P.9, Y.10, T.11, G.12 Ligand excluded by PLIP SO4.35: 1 residues within 4Å: Chain D: R.1 Ligand excluded by PLIP SO4.36: 1 residues within 4Å: Chain D: R.1 Ligand excluded by PLIP

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

EDO.5: 4 residues within 4Å: Chain A: T.80, L.81, Q.155, W.193 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:T.80, A:Q.155 EDO.6: 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.7: 3 residues within 4Å: Chain A: N.77, T.80, N.82 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:N.77, A:T.80, A:N.82 EDO.8: 5 residues within 4Å: Chain A: C.109, A.110, F.161, Q.188, K.208 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:A.110, A:Q.188, A:K.208 EDO.9: 4 residues within 4Å: Chain A: Y.5, C.7, T.11, L.117 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:Y.5, A:T.11, A:T.11 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 EDO.11: 4 residues within 4Å: Chain A: I.30, N.31, L.105, K.217 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:I.30, A:N.31 EDO.23: 4 residues within 4Å: Chain C: T.80, L.81, Q.155, W.193 2 PLIP interactions: 2 interactions with chain C Hydrogen bonds: C:T.80, C:Q.155 EDO.24: 4 residues within 4Å: Chain C: P.132, D.133, V.134, K.136 4 PLIP interactions: 4 interactions with chain C Hydrogen bonds: C:D.133, C:V.134, C:K.136, C:K.136 EDO.25: 3 residues within 4Å: Chain C: N.77, T.80, N.82 4 PLIP interactions: 4 interactions with chain C Hydrogen bonds: C:N.77, C:T.80, C:T.80, C:N.82 EDO.26: 5 residues within 4Å: Chain C: C.109, A.110, F.161, Q.188, K.208 3 PLIP interactions: 3 interactions with chain C Hydrogen bonds: C:A.110, C:Q.188, C:K.208 EDO.27: 4 residues within 4Å: Chain C: Y.5, C.7, T.11, L.117 1 PLIP interactions: 1 interactions with chain C Hydrogen bonds: C:T.11 EDO.28: 4 residues within 4Å: Chain C: S.32, A.94, S.95, L.96 4 PLIP interactions: 4 interactions with chain C Hydrogen bonds: C:L.96, C:L.96 Water bridges: C:S.32, C:S.32 EDO.29: 4 residues within 4Å: Chain C: I.30, N.31, L.105, K.217 2 PLIP interactions: 2 interactions with chain C Hydrogen bonds: C:I.30, C:N.31

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: AC
Pancreatic trypsin inhibitor: BD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
E

C
E

B
I

D
I

Cationic trypsin

Pancreatic trypsin inhibitor

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