7YOI

Crystal structure of I88L single mutant of O-acetylserine sulfhydrylase from Haemophilus influenzae in complex with high-affinity inhibitory peptide from serine acetyltransferase of Salmonella typhimurium at 2.14 A

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	278	0.1M HEPES, 1.3M Sodium Citrate

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 112.97	α = 90
b = 112.97	β = 90
c = 44.52	γ = 90

Symmetry
Space Group	I 41

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MAR scanner 345 mm plate		2012-09-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.54179

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	CC (Half)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.14	41.454	97.64	0.873	73.27	14.6		15711

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.14	2.217	76.8		0.77

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1Y7L	2.14	41.454	15361	767	97.636	0.222	0.2198	0.2714	30.896

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
-3.947			-3.947		7.894

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.42
r_dihedral_angle_3_deg	16.279
r_dihedral_angle_4_deg	13.959
r_lrange_it	6.874
r_dihedral_angle_1_deg	6.656
r_scangle_it	3.573
r_mcangle_it	2.977
r_scbond_it	2.334
r_mcbond_it	1.904
r_angle_refined_deg	1.506

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.42
r_dihedral_angle_3_deg	16.279
r_dihedral_angle_4_deg	13.959
r_lrange_it	6.874
r_dihedral_angle_1_deg	6.656
r_scangle_it	3.573
r_mcangle_it	2.977
r_scbond_it	2.334
r_mcbond_it	1.904
r_angle_refined_deg	1.506
r_nbtor_refined	0.296
r_symmetry_nbd_refined	0.245
r_nbd_refined	0.228
r_symmetry_xyhbond_nbd_refined	0.216
r_xyhbond_nbd_refined	0.156
r_chiral_restr	0.112
r_gen_planes_refined	0.007
r_bond_refined_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2294
Nucleic Acid Atoms
Solvent Atoms	55
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
iMOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

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.