1BRS

PROTEIN-PROTEIN RECOGNITION: CRYSTAL STRUCTURAL ANALYSIS OF A BARNASE-BARSTAR COMPLEX AT 2.0-A RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.71	54.59

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 207.25	α = 90
b = 43.86	β = 107.76
c = 84.71	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2	7	43964			0.172

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]

RMS Deviations
Key	Refinement Restraint Deviation
p_orthonormal_tor	26.833
p_staggered_tor	17.406
p_scangle_it	3.266
p_scbond_it	2.117
p_planar_tor	2.068
p_mcangle_it	1.738
p_mcbond_it	1.05
p_xhyhbond_nbd	0.23
p_multtor_nbd	0.216
p_singtor_nbd	0.209
p_chiral_restr	0.104
p_planar_d	0.051
p_angle_d	0.044
p_bond_d	0.014
p_plane_restr	0.011
p_angle_deg
p_hb_or_metal_coord
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4640
Nucleic Acid Atoms
Solvent Atoms	513
Heterogen Atoms

Software

Software
Software Name	Purpose
PROLSQ	refinement