3PEP

REVISED 2.3 ANGSTROMS STRUCTURE OF PORCINE PEPSIN. EVIDENCE FOR A FLEXIBLE SUBDOMAIN

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.09	41.27

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.27	α = 90
b = 73.82	β = 90
c = 36.44	γ = 103.38

Symmetry
Space Group	P 1 1 21

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		2.3	5	8742			0.171

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	19.5
p_staggered_tor	19.2
p_planar_tor	5.5
p_scangle_it	4.2
p_mcangle_it	3.9
p_scbond_it	2.8
p_mcbond_it	2.4
p_chiral_restr	0.165
p_xhyhbond_nbd	0.106
p_planar_d	0.064
p_angle_d	0.052
p_bond_d	0.018
p_plane_restr	0.018
p_angle_deg
p_hb_or_metal_coord
p_singtor_nbd
p_multtor_nbd
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2429
Nucleic Acid Atoms
Solvent Atoms	212
Heterogen Atoms

Software

Software
Software Name	Purpose
PROLSQ	refinement