1O4V

Crystal structure of the catalytic subunit of a phosphoribosylaminoimidazole mutase (tm0446) from thermotoga maritima at 1.77 A resolution

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1QCZ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP, NANODROP	5.6	293	2M ammonium sulfate, 0.1M tri-sodium citrate dihydrate pH 5.6, 0.2M potassium sodium tartrate tetrahydrate , VAPOR DIFFUSION, SITTING DROP, NANODROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 103.249	α = 90
b = 103.249	β = 90
c = 65.445	γ = 90

Symmetry
Space Group	I 4 2 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	flat mirror	2003-02-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1		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	1.77	24.37	95.4	0.072	19.3	7.2	16697	16697			34.3

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	1.77	1.82	73.8		0.452	2.1	3.5	931

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	1QCZ	1.77	24.37	15859	838	95.17	0.1514	0.14981	0.18177	RANDOM	26.807

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]
-2.05			-2.05		4.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.012
r_dihedral_angle_3_deg	14.792
r_dihedral_angle_4_deg	14.694
r_dihedral_angle_1_deg	5.245
r_scangle_it	4.544
r_scbond_it	2.684
r_mcangle_it	1.589
r_angle_refined_deg	1.468
r_angle_other_deg	0.927
r_mcbond_it	0.873
r_symmetry_vdw_refined	0.314
r_symmetry_hbond_refined	0.243
r_nbd_refined	0.223
r_xyhbond_nbd_refined	0.21
r_symmetry_vdw_other	0.209
r_nbd_other	0.176
r_chiral_restr	0.093
r_nbtor_other	0.085
r_bond_refined_d	0.016
r_gen_planes_refined	0.007
r_bond_other_d	0.006
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1280
Nucleic Acid Atoms
Solvent Atoms	118
Heterogen Atoms	10

Software

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