1PLC

ACCURACY AND PRECISION IN PROTEIN CRYSTAL STRUCTURE ANALYSIS: RESTRAINED LEAST-SQUARES REFINEMENT OF THE CRYSTAL STRUCTURE OF POPLAR PLASTOCYANIN AT 1.33 ANGSTROMS RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
1.9	35.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 29.6	α = 90
b = 46.86	β = 90
c = 57.6	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

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		1.33	8	14303			0.15

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_scangle_it	6
p_scbond_it	3.9
p_mcangle_it	3
p_planar_tor	2.6
p_mcbond_it	2.2
p_multtor_nbd	0.199
p_singtor_nbd	0.143
p_chiral_restr	0.118
p_planar_d	0.036
p_angle_d	0.032
p_bond_d	0.016
p_plane_restr	0.011
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_xyhbond_nbd
p_staggered_tor
p_orthonormal_tor
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1546
Nucleic Acid Atoms
Solvent Atoms	110
Heterogen Atoms	1

Software

Software
Software Name	Purpose
PROLSQ	refinement