6AIF

Crystal structure of M120A mutant of O-acetylserine sulfhydrylase from Haemophilus influenzae in complex with high affinity inhibitory peptide from serine acetyl transferase of Salmonella typhimurium

PDB DOI: https://doi.org/10.2210/pdb6AIF/pdb

Classification: TRANSFERASE/TRANSFERASE INHIBITOR
Organism(s): Haemophilus influenzae Rd KW20, Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
Expression System: Escherichia coli BL21(DE3)
Mutation(s): Yes

Deposited: 2018-08-23 Released: 2018-09-05
Deposition Author(s): Singh, R.P., Kaushik, A.
Funding Organization(s): Council of Scientific & Industrial Research

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.30 Å
R-Value Free: 0.214
R-Value Work: 0.161
R-Value Observed: 0.164

wwPDB Validation 3D Report Full Report

This is version 1.1 of the entry. See complete history.

Literature

Crystal structure of M120A mutant of O-acetylserine sulfhydrylase from Haemophilus influenzae in complex with high affinity inhibitory peptide from serine acetyl transferase of Salmonella typhimurium

Singh, R.P., Kaushik, A.

To be published.

Macromolecule Content

Total Structure Weight: 38.37 kDa
Atom Count: 2,397
Modelled Residue Count: 318
Deposited Residue Count: 360
Unique protein chains: 2

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cysteine synthase	A	350	Haemophilus influenzae Rd KW20	Mutation(s): 1 Gene Names: cysK, HI_1103 EC: 2.5.1.47
UniProt
Find proteins for P45040 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)) Explore P45040 Go to UniProtKB: P45040
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P45040
Sequence Annotations Expand
Reference Sequence

Find similar proteins by: Sequence | 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Peptide from Serine acetyltransferase	B	10	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 1
UniProt
Find proteins for P29847 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P29847 Go to UniProtKB: P29847
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P29847
Sequence Annotations Expand
Reference Sequence

Small Molecules

Modified Residues 1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
LLP Query on LLP	A	L-PEPTIDE LINKING	C₁₄ H₂₂ N₃ O₇ P		LYS

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.30 Å
R-Value Free: 0.214
R-Value Work: 0.161
R-Value Observed: 0.164
Space Group: I 4₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 112.16	α = 90
b = 112.16	β = 90
c = 43.46	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Released Date: 2018-09-05

Deposition Author(s):

Funding Organization	Location	Grant Number
Council of Scientific & Industrial Research	India	--

Revision History (Full details and data files)

Version 1.0: 2018-09-05
Type: Initial release
Version 1.1: 2023-11-22
Changes: Data collection, Database references, Refinement description

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.