7YOL

Crystal structure of tetra mutant (D67E, A68P, L98I, A301S) of O-acetylserine sulfhydrylase from Haemophilus influenzae in complex with high-affinity inhibitory peptide of serine acetyltransferase from Haemophilus influenzae at 2.4 A

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	ROTATING ANODE
Source details	RIGAKU
Temperature [K]	100
Detector technology	IMAGE PLATE
Collection date	2012-05-29
Detector	MAR scanner 345 mm plate
Wavelength(s)	1.54179
Spacegroup name	I 41
Unit cell lengths	112.370, 112.370, 45.700
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	42.330 - 2.400
Rwork	0.168
R-free	0.19680
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	1y7l
RMSD bond length	0.008
RMSD bond angle	1.559
Data reduction software	iMOSFLM
Data scaling software	SCALA
Phasing software	PHASER
Refinement software	REFMAC (5.8.0267)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	42.330	2.589
High resolution limit [Å]	2.400	2.500
Number of reflections	11361	970
<I/σ(I)>	126.45
Completeness [%]	99.5
Redundancy	15.5
CC(1/2)	0.886	0.835

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP	7.5	278	0.1M HEPES, 1.3M Sodium Citrate