2CI2

CRYSTAL AND MOLECULAR STRUCTURE OF THE SERINE PROTEINASE INHIBITOR CI-2 FROM BARLEY SEEDS

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
1.96	37.29

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 69.015	α = 90
b = 69.015	β = 90
c = 52.89	γ = 120

Symmetry
Space Group	P 6 2 2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2	8			0.198

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	5.285
p_scbond_it	3.611
p_planar_tor	3
p_mcangle_it	2.909
p_mcbond_it	1.956
p_singtor_nbd	0.297
p_multtor_nbd	0.276
p_xhyhbond_nbd	0.24
p_chiral_restr	0.123
p_angle_d	0.029
p_planar_d	0.021
p_plane_restr	0.014
p_bond_d	0.007
p_angle_deg
p_hb_or_metal_coord
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	521
Nucleic Acid Atoms
Solvent Atoms	64
Heterogen Atoms

Software

Software
Software Name	Purpose
PROLSQ	refinement