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

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
2.18	43.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 112.37	α = 90
b = 112.37	β = 90
c = 45.7	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		2012-05-29	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	2.4	42.33	99.54	0.886	126.45	15.5		11361

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	2.5	2.589			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	2.4	42.33	11361	584	99.965	0.169	0.1679	0.1968	29.251

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]
-1.757			-1.757		3.513

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.939
r_dihedral_angle_4_deg	15.996
r_dihedral_angle_3_deg	15.747
r_lrange_it	7.272
r_dihedral_angle_1_deg	6.187
r_scangle_it	5.044
r_mcangle_it	3.518
r_scbond_it	3.513
r_mcbond_it	2.318
r_angle_refined_deg	1.559

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.939
r_dihedral_angle_4_deg	15.996
r_dihedral_angle_3_deg	15.747
r_lrange_it	7.272
r_dihedral_angle_1_deg	6.187
r_scangle_it	5.044
r_mcangle_it	3.518
r_scbond_it	3.513
r_mcbond_it	2.318
r_angle_refined_deg	1.559
r_nbtor_refined	0.303
r_nbd_refined	0.212
r_symmetry_xyhbond_nbd_refined	0.174
r_symmetry_nbd_refined	0.152
r_xyhbond_nbd_refined	0.14
r_chiral_restr	0.112
r_bond_refined_d	0.008
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2335
Nucleic Acid Atoms
Solvent Atoms	58
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 R01GM157729.