1Q7R

X-ray crystallographic analysis of a predicted amidotransferase from B. stearothermophilus at 1.9 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	277	drop: 0.05 M NaAc pH 5.0, 5 mM Tris pH 8.3, 9% PEG 4K, 0.15 M AmS, 0.25 M NaCl, 2.5 mM DTT; resevoir: 0.1 M NaAc pH 5.0, 18 % PEG 4K, 0.3 M AmS., VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.09	41.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 44.947	α = 90
b = 44.947	β = 90
c = 202.668	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	170	CCD	MARRESEARCH		2003-06-29	M	SAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 5ID-B	0.979174	APS	5ID-B

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	1.9	27	93.4	0.083	5.5	6	16403	16323		-3	24.5

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)
	1.9	1.99	84.4		0.286	2.6	6.2	2082

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.9	19.73	15492	15492	817	93.95	0.195	0.19508	0.19313	0.23231	RANDOM	33.002

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]
					-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_scangle_it	7.999
r_mcangle_it	5.483
r_scbond_it	5.421
r_mcbond_it	3.813
r_dihedral_angle_1_deg	2.664
r_angle_refined_deg	1.577
r_angle_other_deg	0.712
r_symmetry_vdw_other	0.383
r_symmetry_vdw_refined	0.35
r_nbd_other	0.279
r_nbd_refined	0.24
r_xyhbond_nbd_refined	0.185
r_symmetry_hbond_refined	0.145
r_chiral_restr	0.094
r_nbtor_other	0.088
r_bond_refined_d	0.007
r_gen_planes_refined	0.003
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1547
Nucleic Acid Atoms
Solvent Atoms	126
Heterogen Atoms	10

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
SHARP	phasing