1A48

SAICAR SYNTHASE

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.4	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.6	α = 90
b = 63.7	β = 90
c = 81.2	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	293	IMAGE PLATE	MARRESEARCH	TOROIDAL MIRROR	1991-11-21	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X31		EMBL/DESY, HAMBURG	X31

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	10	97	0.051	26			24879			19.1

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	1.94	95		0.17	7	3.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MIRAS	1.9	10	24879	24879		97	0.153			23.2

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]

RMS Deviations
Key	Refinement Restraint Deviation
p_transverse_tor	29.79
p_staggered_tor	20.18
p_scangle_it	8.27
p_scbond_it	5.444
p_mcangle_it	3.297
p_planar_tor	3.119
p_mcbond_it	2.179
p_multtor_nbd	0.273
p_xyhbond_nbd	0.242
p_chiral_restr	0.213
p_singtor_nbd	0.183
p_angle_d	0.041
p_planar_d	0.041
p_bond_d	0.02
p_plane_restr	0.017
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2383
Nucleic Acid Atoms
Solvent Atoms	319
Heterogen Atoms	13

Software

Software
Software Name	Purpose
ARP/wARP	model building
PROLSQ	refinement
DENZO	data reduction
SCALEPACK	data scaling