7NBH

Crystal structure of human serine racemase in complex with DSiP fragment Z26781964, XChem fragment screen.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.2	293	100 mM MES pH 6.2 100 mM calcium chloride 5% ethylene glycol 20% PEG Smear Broad

Crystal Properties
Matthews coefficient	Solvent content
2.11	41.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.18	α = 90
b = 154.88	β = 98.04
c = 85.48	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M-F		2018-07-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04-1	0.91587	Diamond	I04-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	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	1.77	51.6	97.1	0.072	0.098	0.997	8.2	3.4		116780

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	1.77	1.82	96.3		1.048	0.302	1	3.3

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	6ZUJ	1.77	47.752	116737	5859	97.001	0.171	0.1694	0.2018	35.476

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]
-0.385		0.29	0.588		-0.274

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.999
r_dihedral_angle_4_deg	21.461
r_dihedral_angle_3_deg	14.906
r_lrange_it	10.565
r_dihedral_angle_1_deg	6.755
r_scangle_it	4.863
r_scbond_it	3.446
r_mcangle_it	3.332
r_mcbond_it	2.343
r_angle_refined_deg	1.734
r_nbtor_refined	0.31
r_symmetry_nbd_refined	0.276
r_symmetry_xyhbond_nbd_refined	0.227
r_nbd_refined	0.221
r_metal_ion_refined	0.192
r_xyhbond_nbd_refined	0.175
r_chiral_restr	0.116
r_bond_refined_d	0.013
r_gen_planes_refined	0.012

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9435
Nucleic Acid Atoms
Solvent Atoms	975
Heterogen Atoms	250

Software

Software
Software Name	Purpose
REFMAC	refinement
DIALS	data reduction
Aimless	data scaling
MOLREP	phasing