1NO1

Structure of truncated variant of B.subtilis SPP1 phage G39P helicase loader/inhibitor protein

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5	290	sodium citrate, ammonium sulphate, pH 5., VAPOR DIFFUSION, SITTING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
4.44	72.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.9	α = 90
b = 91.3	β = 90
c = 48.4	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	100	IMAGE PLATE	MARRESEARCH		2000-05-05	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM30A	0.9795	ESRF	BM30A

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	2.4	20	93	0.054	0.054	13.3	5.7	161039	161039			57.01

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	2.4	2.46	81		0.262	0.262		2.7

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	MAD	THROUGHOUT	2.4	15	14548	14548	752	96.56	0.20565	0.20565	0.2043	0.23227	RANDOM	36.488

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]
-3.26			-5.49		8.76

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	17.338
r_scangle_it	4.624
r_dihedral_angle_1_deg	3.511
r_scbond_it	3.001
r_angle_refined_deg	1.603
r_mcangle_it	1.412
r_mcbond_it	0.739
r_nbd_refined	0.239
r_xyhbond_nbd_refined	0.157
r_symmetry_vdw_refined	0.11
r_chiral_restr	0.101
r_symmetry_hbond_refined	0.077
r_bond_refined_d	0.017
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1538
Nucleic Acid Atoms
Solvent Atoms	41
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
REFMAC	refinement