6TGH

SHMT from Streptococcus thermophilus Tyr55Thr variant in complex with D-Serine both as external aldimine and as non-covalent complex

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4WXB

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293.15	PLP 0.1 mm D-Serine 100 mm cacodylate 0.1 M, pH 6.5 sodium citrate 0.85 M

Crystal Properties
Matthews coefficient	Solvent content
4.21	70.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 200.795	α = 90
b = 112.93	β = 93.1
c = 131.918	γ = 90

Symmetry
Space Group	C 1 2 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		2016-07-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALBA BEAMLINE XALOC	0.9798	ALBA	XALOC

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.1	98	99.3	0.05	17.9	6.5		165927

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.2			0.05

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	4WXB	2.12	47.76	157619	8296	99.33	0.2391	0.2368	0.2836	RANDOM	55.166

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]
0.07		-0.02	0.26		-0.33

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.128
r_dihedral_angle_3_deg	16.677
r_dihedral_angle_4_deg	15.474
r_dihedral_angle_1_deg	7.532
r_angle_refined_deg	1.647
r_angle_other_deg	1.293
r_chiral_restr	0.071
r_bond_refined_d	0.009
r_gen_planes_refined	0.008
r_gen_planes_other	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.128
r_dihedral_angle_3_deg	16.677
r_dihedral_angle_4_deg	15.474
r_dihedral_angle_1_deg	7.532
r_angle_refined_deg	1.647
r_angle_other_deg	1.293
r_chiral_restr	0.071
r_bond_refined_d	0.009
r_gen_planes_refined	0.008
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	12476
Nucleic Acid Atoms
Solvent Atoms	381
Heterogen Atoms	91

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
iMOSFLM	data reduction
XDS	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.