1QO2

Crystal structure of N-((5'-phosphoribosyl)-formimino)-5-aminoimidazol-4-carboxamid ribonucleotid isomerase (EC 3.1.3.15, HisA)

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.6		SEE THOMA ET AL. (1999) FEBS LETTERS 454, 1-6., pH 5.60

Crystal Properties
Matthews coefficient	Solvent content
1.82	31.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.78	α = 90
b = 73.16	β = 97.42
c = 62.7	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	100	IMAGE PLATE	MARRESEARCH	RHODIUM COATED PRE-MIRROR FOCUSSING MIRROR	1998-06-15	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7A	0.97893, 0.97929, 0.98089	EMBL/DESY, HAMBURG	BW7A

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	1.85	39.841	97.4	0.041	17	3.51		34932			27.24

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	1.85	1.88	91.9		0.269	2.53	1.95

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	1.85	8	34472	1707	97.4	0.188	0.188	0.246	RANDOM	20.81

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]
-2.878		-3.646	5.037		-2.159

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.31
c_scangle_it	1.987
c_mcangle_it	1.293
c_scbond_it	1.282
c_angle_deg	1.28
c_mcbond_it	0.788
c_improper_angle_d	0.649
c_bond_d	0.0047
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	3798
Nucleic Acid Atoms
Solvent Atoms	547
Heterogen Atoms

Software

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