1BXO

ACID PROTEINASE (PENICILLOPEPSIN) (E.C.3.4.23.20) COMPLEX WITH PHOSPHONATE INHIBITOR: METHYL CYCLO[(2S)-2-[[(1R)-1-(N-(L-N-(3-METHYLBUTANOYL)VALYL-L-ASPARTYL)AMINO)-3-METHYLBUT YL] HYDROXYPHOSPHINYLOXY]-3-(3-AMINOMETHYL) PHENYLPROPANOATE

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1PPL

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4.6		0.1 M CH3COONA 35% AMMONIUM SULFATE PH 4.6

Crystal Properties
Matthews coefficient	Solvent content
1.91	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 96.98	α = 90
b = 46.65	β = 115.57
c = 65.71	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	100	CCD	ADSC	CRYSTAL AND MIRROR	1997-11-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F1		CHESS	F1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	0.95	10	98	0.053	0.055	3.9	2.76		430728

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	0.95	0.98	53.8		0.16	0.036	1.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	OTHER	UNTIL NEAR END	1PPL	0.95	10	430728	43072	98	0.1004	0.0991		0.1247	10%

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
31	2247.6	2973.4

RMS Deviations
Key	Refinement Restraint Deviation
s_anti_bump_dis_restr	0.124
s_non_zero_chiral_vol	0.123
s_zero_chiral_vol	0.096
s_angle_d	0.034
s_bond_d	0.017
s_similar_dist
s_from_restr_planes
s_rigid_bond_adp_cmpnt
s_similar_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2366
Nucleic Acid Atoms
Solvent Atoms	528
Heterogen Atoms	83

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
SHELXL-97	refinement
CCP4	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.