1LJO

CRYSTAL STRUCTURE OF AN SM-LIKE PROTEIN (AF-SM2) FROM ARCHAEOGLOBUS FULGIDUS AT 1.95A RESOLUTION

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other		SIRAS model built by ARP/WARP (68 residues)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	3.6	293	ammonium sulphate, lithium sulphate, sodium sulphate, pH 3.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.83	32.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 58.42	α = 90
b = 58.42	β = 90
c = 32.084	γ = 120

Symmetry
Space Group	P 6

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	MARRESEARCH		1999-04-29	M	SINGLE WAVELENGTH
2	1	x-ray	100	IMAGE PLATE	MARRESEARCH		1999-04-20	M	SINGLE WAVELENGTH
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14	1	ESRF	BM14
2	ROTATING ANODE	ELLIOTT GX-21	1.5418

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	1.95	27.1	97.6	0.051	0.051	10.5	2.7	4522	4522			18.567

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	1.95	2.06	90.9		0.173	0.173	4.2	2	598

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SIRAS	THROUGHOUT	Built by ARP/WARP (68 residues)	1.95	27.1	4681	4521	226	96.6	0.195	0.195	0.194	0.19	0.211	0.16	RANDOM	25

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]
-5.74	-1.46		-5.74		11.48

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	25.47853
c_scangle_it	4.729
c_mcangle_it	3.363
c_scbond_it	3.077
c_mcbond_it	2.255
c_angle_deg	1.32164
c_improper_angle_d	0.72657
c_bond_d	0.005357

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	578
Nucleic Acid Atoms
Solvent Atoms	33
Heterogen Atoms	13

Software

Software
Software Name	Purpose
SHARP	phasing
CNS	refinement
MAR345	data collection
XDS	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.