2FOB | pdb_00002fob

Structure of porcine pancreatic elastase in 40/50/10 cyclohexane

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	291	15 mg/ml elastase, 25 mM Sodium Acetate, 135 mM Sodium sulfate, 10 ul drop (5x5). See also: Sawyer et al., J.Mol.Biol. 118, 137-208 (1978)., pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.17	43.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.02	α = 90
b = 57.92	β = 90
c = 74.84	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	298	IMAGE PLATE	RIGAKU RAXIS II			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.9	500	51.5				17719

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-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1ELA	1.9	500	17719	924	51.5	0.163	0.1633	0.198	0.1965	Random	23.362

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]
-1.811			1.162		0.649

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	25.6788
c_angle_d	1.2379
c_improper_angle_d	0.6471
c_bond_d	0.00424

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1822
Nucleic Acid Atoms
Solvent Atoms	150
Heterogen Atoms	26

Software

Software
Software Name	Purpose
PROCESS	data reduction
CNS	refinement
PROCESS	data scaling
CNS	phasing