2A9V

Crystal structure of a putative gmp synthase subunit a protein (ta0944m) from thermoplasma acidophilum at 2.45 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION,SITTING DROP,NANODROP		293	22.00% PEG 3350, 0.20M NP_Sodium Thiocyanate, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2	37.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 275.661	α = 90
b = 39.045	β = 90
c = 68.267	γ = 90

Symmetry
Space Group	P 21 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	100	CCD	ADSC QUANTUM 315		2005-02-25	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.2	1.00, 0.97971, 0.97947	ALS	8.2.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.24	66.27	78.6	0.053	0.053	9	3.2		29096

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.24	2.3		30.7	0.163	0.163	4.8	1.5

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	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD, Molecular replacement	THROUGHOUT	1qdl	2.24	66.27	27616	1439	79.08	0.179	0.176	0.246	RANDOM	25.529

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]
1.29			-0.83		-0.46

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.44
r_dihedral_angle_4_deg	17.237
r_dihedral_angle_3_deg	15.829
r_dihedral_angle_1_deg	5.487
r_scangle_it	3.293
r_scbond_it	2.092
r_angle_refined_deg	1.57
r_mcangle_it	1.047
r_angle_other_deg	0.983
r_mcbond_it	0.494
r_symmetry_vdw_refined	0.378
r_symmetry_vdw_other	0.227
r_nbd_refined	0.202
r_nbd_other	0.195
r_symmetry_hbond_refined	0.195
r_nbtor_refined	0.181
r_xyhbond_nbd_refined	0.169
r_mcbond_other	0.153
r_nbtor_other	0.088
r_chiral_restr	0.084
r_bond_refined_d	0.016
r_gen_planes_refined	0.006
r_bond_other_d	0.005
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6283
Nucleic Acid Atoms
Solvent Atoms	211
Heterogen Atoms	58

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALA	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data reduction
CCP4	data scaling
MOLREP	phasing
SHARP	phasing
ARP/wARP	model building
SHELXD	phasing