1H9L

PORCINE PANCREATIC ELASTASE COMPLEXED WITH ACETYL-VAL-GLU-PRO-ILE-COOH

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5		CRYSTALS PREPARED FROM 25MM SODIUM SULPHATE, 25MM SODIUM ACETATE (PH 5.0), 25 MG/ML PPE AND THEN SOAKED WITH ACETYL-VAL-GLU-PRO-ILE (17 MG/ML) DISSOLVED IN SODIUM ACETATE (PH 5.0, 50MM) AND SODIUM SULPHATE (25 MM)

Crystal Properties
Matthews coefficient	Solvent content
1.83	32.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.16	α = 90
b = 57.84	β = 90
c = 74.32	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	100	IMAGE PLATE	MARRESEARCH		1998-06-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX9.6		SRS	PX9.6

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.67	22.9	95.2	0.072	15	6.3		24944			13.8

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	1.67	1.7	96.7		0.25	10

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1QIX	1.67	22.9	24944	1019	95.2	0.159	0.158	0.199	RANDOM	15.5

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]
-0.73			0.39		0.34

RMS Deviations
Key	Refinement Restraint Deviation
p_transverse_tor	19.4
p_staggered_tor	13.3
p_scangle_it	4.101
p_planar_tor	3.9
p_scbond_it	2.714
p_mcangle_it	2.009
p_mcbond_it	1.253
p_multtor_nbd	0.25
p_singtor_nbd	0.177
p_chiral_restr	0.15
p_hb_or_metal_coord	0.132
p_angle_d	0.028
p_planar_d	0.028
p_bond_d	0.019
p_plane_restr	0.01
p_angle_deg
p_xhyhbond_nbd
p_xyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1831
Nucleic Acid Atoms
Solvent Atoms	233
Heterogen Atoms	6

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	phasing