1TMN

Binding of n-carboxymethyl dipeptide inhibitors to thermolysin determined by x-ray crystallography. a novel class of transition-state analogues for zinc peptidases

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.2		pH 7.2

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 94.2	α = 90
b = 94.2	β = 90
c = 131.4	γ = 120

Symmetry
Space Group	P 61 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	285	FILM	KODAK		1983-11-16	M	SINGLE CRYSTAL

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ELLIOTT GX-21

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	1.7	14.9		0.069	0.048				23734

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR SUBSTATUTION	NONE	1.9	14.9	19842			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
o_angle_deg	3.6
o_bond_d	0.021
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	2432
Nucleic Acid Atoms
Solvent Atoms	144
Heterogen Atoms	40

Software

Software
Software Name	Purpose
EREF	refinement
OSCTST	data reduction
AGROVATA/ROTAVATE	data scaling
RICHARDS	phasing