SMTL ID : 2ftl.1 (4 other biounits)

Crystal structure of trypsin complexed with BPTI at 100K

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.62 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:E.59

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.1, H2O.1 CA.13: 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: 2 residues within 4Å: Chain A: S.44 Chain B: K.46 11 PLIP interactions: 3 interactions with chain B, 8 interactions with chain A Water bridges: B:R.20, B:K.46, A:K.43, A:K.43, A:K.43, A:K.43, A:S.44, A:S.44 Salt bridges: B:K.46, A:K.43 Hydrogen bonds: A:S.44 SO4.4: 3 residues within 4Å: Chain A: K.149, P.153, G.154 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:G.154 Water bridges: A:Q.155 SO4.5: 2 residues within 4Å: Chain A: Q.33, K.89 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:Q.33 Water bridges: A:K.89, A:K.89 Salt bridges: A:K.89 SO4.6: 5 residues within 4Å: Chain A: S.75, N.77, T.80, N.82, N.83 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:N.77, A:N.82, A:N.83 SO4.14: 4 residues within 4Å: Chain B: R.20, Y.35, G.37, A.40 6 PLIP interactions: 6 interactions with chain B Hydrogen bonds: B:Y.35 Water bridges: B:R.20, B:G.37, B:A.40, B:A.40 Salt bridges: B:R.20 SO4.15: 4 residues within 4Å: Chain B: F.4, E.7, K.41, R.42 5 PLIP interactions: 5 interactions with chain B Hydrogen bonds: B:R.42 Water bridges: B:E.7, B:R.42, B:N.43 Salt bridges: B:R.42 SO4.16: 1 residues within 4Å: Chain B: R.42 2 PLIP interactions: 2 interactions with chain B Water bridges: B:R.42 Salt bridges: B:R.42 SO4.17: 4 residues within 4Å: Chain B: P.9, Y.10, T.11, G.12 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:T.11, B:T.11, B:G.12 Water bridges: B:Y.10

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

EDO.7: 6 residues within 4Å: Chain A: C.109, A.110, I.142, F.161, Q.188, K.208 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:A.110, A:Q.188, A:K.208 Water bridges: A:K.208 EDO.8: 6 residues within 4Å: Chain A: N.19, Y.22, H.23, R.49, I.55, N.56 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:N.19, A:H.23, A:R.49 Water bridges: A:R.49 EDO.9: 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.10: 4 residues within 4Å: Chain A: P.132, D.133, V.134, K.136 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:D.133, A:V.134, A:K.136 Water bridges: A:T.124 EDO.11: 4 residues within 4Å: Chain A: S.32, A.94, S.95, L.96 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:L.96, A:L.96 Water bridges: A:S.32 EDO.12: 3 residues within 4Å: Chain A: I.30, N.31, K.217 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:I.30, A:N.31

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Hanson, W.M. et al., Rigidification of a Flexible Protease Inhibitor Variant upon Binding to Trypsin. J.Mol.Biol. (2007)

Release Date

2006-02-14

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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