1DFO

CRYSTAL STRUCTURE AT 2.4 ANGSTROM RESOLUTION OF E. COLI SERINE HYDROXYMETHYLTRANSFERASE IN COMPLEX WITH GLYCINE AND 5-FORMYL TETRAHYDROFOLATE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.2	293	2M POTASSIUM PHOSPHATE, pH 7.2, VAPOR DIFFUSION, temperature 293.0K

Crystal Properties
Matthews coefficient	Solvent content
3.39	63.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 77.46	α = 90
b = 172.24	β = 104.12
c = 95.05	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	293	IMAGE PLATE	RIGAKU RAXIS		1998-06-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU

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	2.4	91	100	0.23	7.1	4.2	93964	93782		-3	43.5

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)
	2.41	2.49	100		1		4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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		THROUGHOUT	2.4	20	2.2	93980	82807	8284	88	0.174	0.174	0.196	RANDOM	36.2

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]
1.7		0.11	-6.77		5.07

RMS Deviations
Key	Refinement Restraint Deviation
c_scbond_it	23.79
c_dihedral_angle_d	22.2
c_scangle_it	21.31
c_mcangle_it	3.07
c_mcbond_it	2.1
c_improper_angle_d	2.07
c_angle_deg	1.3
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	12620
Nucleic Acid Atoms
Solvent Atoms	388
Heterogen Atoms	196

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing