3K0K

Crystal Structure of BRCA1 BRCT in complex with a minimal recognition tetrapeptide with a free carboxy C-terminus.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.3	298	Li2SO4, Tris-HCl, NiCl2, pH 7.3, VAPOR DIFFUSION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
4.64	73.48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 114.422	α = 90
b = 114.422	β = 90
c = 123.005	γ = 120

Symmetry
Space Group	P 61 2 2

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	MAR scanner 300 mm plate		2008-07-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CLSI BEAMLINE 08ID-1	0.97934	CLSI	08ID-1

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	2.7	50	99.3	0.061	12.5	19.2		13551

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	2.7	2.8	94		0.557		7.7	1259

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.7	35.83	13512	667	99.4	0.261	0.259	0.299	RANDOM	48.285

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]
-0.2	-0.1		-0.2		0.31

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.462
r_dihedral_angle_3_deg	16.468
r_dihedral_angle_4_deg	12.654
r_dihedral_angle_1_deg	5.867
r_scangle_it	1.409
r_angle_refined_deg	1.035
r_scbond_it	0.844
r_mcangle_it	0.649
r_mcbond_it	0.343
r_chiral_restr	0.067

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.462
r_dihedral_angle_3_deg	16.468
r_dihedral_angle_4_deg	12.654
r_dihedral_angle_1_deg	5.867
r_scangle_it	1.409
r_angle_refined_deg	1.035
r_scbond_it	0.844
r_mcangle_it	0.649
r_mcbond_it	0.343
r_chiral_restr	0.067
r_bond_refined_d	0.006
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1731
Nucleic Acid Atoms
Solvent Atoms	12
Heterogen Atoms	2

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	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.