7YOL | pdb_00007yol

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

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1Y7L	1Y7L

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1Y7L	2.4	42.33	11361	584	99.965	0.169	0.1679	0.17	0.1968	0.2	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
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