7YOH

Crystal structure of I88L single mutant of O-acetylserine sulfhydrylase from Haemophilus influenzae in complex with high-affinity inhibitory peptide from serine acetyltransferase of Haemophilus influenzae at 2.5 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
2.05	40.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 112.75	α = 90
b = 112.75	β = 90
c = 44.46	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	293	IMAGE PLATE	MAR scanner 345 mm plate		2012-09-11	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	2.5	41.36	99.54	0.886	126.45	15.5		9865			35.63

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.581	99.69		0.7904	0.835

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	2.5	41.36	9828	515	99.585	0.246	0.2435	0.2949	38.395

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]
-4.548			-4.548		9.096

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.807
r_dihedral_angle_3_deg	19.363
r_dihedral_angle_4_deg	10.74
r_lrange_it	8.982
r_dihedral_angle_1_deg	7.682
r_mcangle_it	5.043
r_scangle_it	4.799
r_mcbond_it	3.177
r_scbond_it	3.175
r_angle_refined_deg	1.546

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.807
r_dihedral_angle_3_deg	19.363
r_dihedral_angle_4_deg	10.74
r_lrange_it	8.982
r_dihedral_angle_1_deg	7.682
r_mcangle_it	5.043
r_scangle_it	4.799
r_mcbond_it	3.177
r_scbond_it	3.175
r_angle_refined_deg	1.546
r_nbtor_refined	0.304
r_symmetry_xyhbond_nbd_refined	0.294
r_nbd_refined	0.236
r_symmetry_nbd_refined	0.195
r_xyhbond_nbd_refined	0.194
r_chiral_restr	0.116
r_gen_planes_refined	0.007
r_bond_refined_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2286
Nucleic Acid Atoms
Solvent Atoms	17
Heterogen Atoms	1

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	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 R01GM157729.