PDBsum entry 4hx2

Hydrolase/hydrolase inhibitor

PDB id: 4hx2

Contents

Protein chains

274 a.a.

114 a.a.

Ligands

1AX

PO4

GOL ×2

IPA ×3

CAC

ACT

Metals

_CA ×4

_ZN ×2

_CL

__K ×2

Waters ×359

PDB id:

4hx2

Name:

Hydrolase/hydrolase inhibitor

Title:

Crystal structure of streptomyces caespitosus sermetstatin in complex with bacillus licheniformis subtilisin

Structure:

Kera. Chain: a, c. Fragment: mature protease. Synonym: subtilisin. Neutral proteinase inhibitor scnpi. Chain: b, d. Synonym: sermetstatin. Engineered: yes

Source:

Bacillus licheniformis. Organism_taxid: 1402. Streptomyces caespitosus. Organism_taxid: 53502. Gene: scnpi. Expressed in: escherichia coli. Expression_system_taxid: 562.

Resolution:

2.25Å R-factor: 0.177 R-free: 0.217

Authors:

S.Trillo-Muyo,S.Martinez-Rodriguez,J.L.Arolas,F.X.Gomis-Ruth

Key ref:

S.Trillo-Muyo et al. Mechanism of action of a janus-Faced single-Domain pr inhibitor simultaneously targeting two peptidase clas. To be published, .

Date:

09-Nov-12 Release date: 05-Dec-12

Protein chains

Q9FDF2  (Q9FDF2_BACLI) -  KerA (Fragment) from Bacillus licheniformis

Seq: 310 a.a.

Struc: 274 a.a.

Protein chains

Q9FDS0  (Q9FDS0_STRCS) -  Neutral proteinase inhibitor ScNPI from Streptomyces caespitosus

Seq: 141 a.a.

Struc: 114 a.a.*

* PDB and UniProt seqs differ at 1 residue position (black cross)

Enzyme reactions

• Enzyme class: Chains A, C: E.C.3.4.21.62 - subtilisin.
• Reaction: Hydrolysis of proteins with broad specificity for peptide bonds, and a preference for a large uncharged residue in P1. Hydrolyzes peptide amides.