SMTL ID : 1lu0.1

Atomic Resolution Structure of Squash Trypsin Inhibitor: Unexpected Metal Coordination

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.03 Å

Oligo State

homo-tetramer

Ligands

2 x ZN: ZINC ION(Non-covalent)

ZN.1: 5 residues within 4Å: Chain A: E.19 Chain B: E.19 Chain C: E.19 Chain D: E.19 Ligands: ZN.6 5 PLIP interactions: 1 interactions with chain C, 2 interactions with chain B, 2 interactions with chain D Metal complexes: C:E.19, B:E.19, B:E.19, D:E.19, D:E.19 ZN.6: 5 residues within 4Å: Chain A: E.19 Chain B: E.19 Chain C: E.19 Chain D: E.19 Ligands: ZN.1 5 PLIP interactions: 1 interactions with chain C, 2 interactions with chain B, 2 interactions with chain D Metal complexes: C:E.19, B:E.19, B:E.19, D:E.19, D:E.19

4 x GOL: GLYCEROL(Non-functional Binders)

GOL.2: 7 residues within 4Å: Chain A: C.3, P.4, R.5, I.6, C.20, C.28, G.29 5 PLIP interactions: 5 interactions with chain A Hydrogen bonds: A:I.6 Water bridges: A:R.5, A:R.5, A:I.6, A:G.29 GOL.5: 4 residues within 4Å: Chain B: E.9, C.10, K.11, D.15 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:E.9 GOL.7: 7 residues within 4Å: Chain C: C.3, P.4, R.5, I.6, C.20, C.28, G.29 5 PLIP interactions: 5 interactions with chain C Hydrogen bonds: C:I.6 Water bridges: C:R.5, C:R.5, C:I.6, C:G.29 GOL.10: 4 residues within 4Å: Chain D: E.9, C.10, K.11, D.15 1 PLIP interactions: 1 interactions with chain D Hydrogen bonds: D:E.9

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

SO4.3: 5 residues within 4Å: Chain A: R.1 Chain B: E.19 Chain C: R.1 Chain D: E.19 Ligands: SO4.8 2 PLIP interactions: 2 interactions with chain A Water bridges: A:R.1, A:R.1 SO4.8: 5 residues within 4Å: Chain A: R.1 Chain B: E.19 Chain C: R.1 Chain D: E.19 Ligands: SO4.3 2 PLIP interactions: 2 interactions with chain C Water bridges: C:R.1, C:R.1

2 x MRD: (4R)-2-METHYLPENTANE-2,4-DIOL(Non-functional Binders)

MRD.4: 5 residues within 4Å: Chain B: R.5, L.7, H.25, C.28, G.29 3 PLIP interactions: 3 interactions with chain B Hydrophobic interactions: B:L.7 Hydrogen bonds: B:R.5, B:R.5 MRD.9: 5 residues within 4Å: Chain D: R.5, L.7, H.25, C.28, G.29 3 PLIP interactions: 3 interactions with chain D Hydrophobic interactions: D:L.7 Hydrogen bonds: D:R.5, D:R.5

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Thaimattam, R. et al., Atomic resolution structure of squash trypsin inhibitor: unexpected metal coordination. Acta Crystallogr.,Sect.D (2002)

Release Date

2002-08-28

Peptides

Trypsin inhibitor I: ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
A

D
B

Trypsin inhibitor I

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