1TLD | pdb_00001tld

CRYSTAL STRUCTURE OF BOVINE BETA-TRYPSIN AT 1.5 ANGSTROMS RESOLUTION IN A CRYSTAL FORM WITH LOW MOLECULAR PACKING DENSITY. ACTIVE SITE GEOMETRY, ION PAIRS AND SOLVENT STRUCTURE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				THE SOLVENT USED WAS 2.5 M AMMONIUM SULPHATE, 0.1 M PHOSPHATE, 1 MM CACL AT PH 5.3.

Crystal Properties
Matthews coefficient	Solvent content
2.99	58.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.7	α = 90
b = 63.5	β = 90
c = 68.9	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		FILM

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X31	1.009	EMBL/DESY, HAMBURG	X31

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION		1.5	7			0.167

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
o_angle_deg	2.17
o_bond_d	0.015
o_bond_d_na
o_bond_d_prot
o_angle_d
o_angle_d_na
o_angle_d_prot
o_angle_deg_na
o_angle_deg_prot
o_dihedral_angle_d
o_dihedral_angle_d_na
o_dihedral_angle_d_prot
o_improper_angle_d
o_improper_angle_d_na
o_improper_angle_d_prot
o_mcbond_it
o_mcangle_it
o_scbond_it
o_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1629
Nucleic Acid Atoms
Solvent Atoms	25
Heterogen Atoms	6

Software

Software
Software Name	Purpose
PROTEIN	model building
EREF	refinement
FILME	data reduction
PROTEIN	data scaling
PROTEIN	phasing