1VLO

Crystal structure of aminomethyltransferase (T protein; tetrahydrofolate-dependent) of glycine cleavage system (np417381) from Escherichia coli k12 at 1.70 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION,SITTING DROP,NANODROP	7.5	277	20.0% PEG-10000, 0.1M HEPES pH 7.5, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
1.93	35.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.517	α = 90
b = 64.564	β = 90
c = 117.141	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315	flat mirror	2004-07-05	M	SINGLE WAVELENGTH
MAD	1
2	1	x-ray		M	MAD
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1		SSRL	BL11-1
2	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.979048,0.979494, 0.885567	SSRL	BL11-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	1.7	43.38	96.2	0.09	11.1	3.5		38018			23.1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1,2	1.7	1.74	81.5		0.389	2.5	2.4	2326

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	1.7	43.38	36059	1920	95.85	0.16051	0.15872	0.19514	RANDOM	12.373

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]
0.2			-0.94		0.73

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.257
r_dihedral_angle_4_deg	15.35
r_dihedral_angle_3_deg	11.347
r_dihedral_angle_1_deg	6.123
r_scangle_it	5.419
r_scbond_it	4.174
r_mcangle_it	2.244
r_mcbond_it	1.811
r_angle_refined_deg	1.345
r_angle_other_deg	0.798
r_mcbond_other	0.42
r_symmetry_vdw_refined	0.275
r_symmetry_vdw_other	0.227
r_nbd_refined	0.213
r_nbd_other	0.186
r_symmetry_hbond_refined	0.155
r_xyhbond_nbd_refined	0.136
r_nbtor_other	0.082
r_chiral_restr	0.079
r_bond_refined_d	0.015
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2800
Nucleic Acid Atoms
Solvent Atoms	419
Heterogen Atoms

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
SOLVE	phasing
REFMAC	refinement
CCP4	data scaling