SMTL ID : 3t62.2 (2 other biounits)

Crystal structure of recombinant Kunitz Type serine protease Inhibitor-1 from the Caribbean Sea anemone Stichodactyla helianthus in complex with bovine chymotrypsin

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.00 Å

Oligo State

hetero-1-1-mer

Ligands

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

SO4.1: 5 residues within 4Å: Chain A: N.95, T.98, N.100, K.177, D.178 5 PLIP interactions: 5 interactions with chain A Hydrogen bonds: A:N.95, A:N.100, A:D.178 Water bridges: A:N.101 Salt bridges: A:K.177 SO4.2: 4 residues within 4Å: Chain A: W.172, S.217, S.218 Chain B: R.11 3 PLIP interactions: 1 interactions with chain B, 2 interactions with chain A Salt bridges: B:R.11 Hydrogen bonds: A:S.218, A:S.218 SO4.3: 3 residues within 4Å: Chain B: T.45, H.47, Q.48 6 PLIP interactions: 6 interactions with chain B Hydrogen bonds: B:T.45, B:T.45, B:Q.48, B:Q.48 Water bridges: B:L.46 Salt bridges: B:H.47 SO4.4: 5 residues within 4Å: Chain A: S.218 Chain B: K.7, K.8, V.9, G.10 3 PLIP interactions: 2 interactions with chain B, 1 interactions with chain A Hydrogen bonds: B:V.9, B:G.10, A:S.218 SO4.5: 2 residues within 4Å: Chain A: K.175 Chain B: R.11 2 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A Salt bridges: B:R.11, A:K.175

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Garcia-Fernandez, R. et al., Structural insights into chymotrypsin inhibition by the Kunitz-type inhibitor-1 from the marine invertebrate Stichodactyla helianthus. To be Published

Release Date

2012-08-01

Peptides

Chymotrypsinogen A: A
Kunitz-type proteinase inhibitor SHPI-1: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
E

Chymotrypsinogen A

Kunitz-type proteinase inhibitor SHPI-1

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