1TR0

Crystal Structure of a boiling stable protein SP1

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1SI9	pdb entry 1SI9

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293	PEG 3000, Sodium Chloride, Hepes, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.7	53.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 97.028	α = 90
b = 94.75	β = 90.11
c = 168.029	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 4		2002-04-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.954	SSRL	BL9-2

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	1.8	48.5	92.5	0.087		1.9	246060	246060	7	2.8

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	1.8	1.9	88.4		0.447	2.8	1.9

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 1SI9	1.8	48.5	246060	246060	13491	100	0.164	0.16447	0.16234	0.20192	RANDOM	7.848

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]
-0.81		-0.03	1.68		-0.87

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.699
r_scangle_it	3.711
r_scbond_it	2.526
r_angle_refined_deg	1.588
r_mcangle_it	1.464
r_angle_other_deg	0.991
r_mcbond_it	0.829
r_symmetry_vdw_other	0.352
r_nbd_other	0.256
r_nbd_refined	0.217
r_symmetry_hbond_refined	0.192
r_xyhbond_nbd_refined	0.171
r_symmetry_vdw_refined	0.117
r_chiral_restr	0.102
r_nbtor_other	0.089
r_bond_refined_d	0.017
r_gen_planes_refined	0.009
r_gen_planes_other	0.009
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	20712
Nucleic Acid Atoms
Solvent Atoms	3179
Heterogen Atoms	144

Software

Software
Software Name	Purpose
REFMAC	refinement
Blu-Ice	data collection
CCP4	data scaling
MOLREP	phasing