4HRO

Crystal structure of H. volcanii small archaeal modifier protein 1

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	277.15	100 mM Na cacodylate (pH 6.5), 15-20% (w/v) PEG 8000, 0.2 M Ca acetate, VAPOR DIFFUSION, HANGING DROP, temperature 277.15K

Crystal Properties
Matthews coefficient	Solvent content
1.97	37.63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 27.928	α = 90
b = 43.05	β = 102.84
c = 61.974	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	CCD	ADSC QUANTUM 315	mirrors	2010-09-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.075	NSLS	X29A

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	1.15	50	98.6	0.042	0.042	35.9	5.9	51004	50290	2	2	15

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	1.15	1.17	89.7		0.256	0.256	5.8	5.3	2295

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	1.15	35.06	50290	47731	2547	98.75	0.166	0.14004	0.1386	0.16636	RANDOM	7.432

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]
0.6		0.05	-0.23		-0.35

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.553
r_dihedral_angle_4_deg	22.863
r_dihedral_angle_3_deg	11.066
r_dihedral_angle_1_deg	5.889
r_scangle_it	3.838
r_scbond_it	2.513
r_mcangle_it	1.751
r_angle_refined_deg	1.314
r_mcbond_it	1.105
r_rigid_bond_restr	0.975
r_angle_other_deg	0.837
r_mcbond_other	0.37
r_chiral_restr	0.074
r_bond_refined_d	0.009
r_gen_planes_refined	0.007
r_gen_planes_other	0.003
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1274
Nucleic Acid Atoms
Solvent Atoms	334
Heterogen Atoms	5

Software

Software
Software Name	Purpose
ADSC	data collection
PHENIX	model building
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing