4AR8

Crystal structure of the peptidase domain of collagenase T from Clostridium tetani complexed with the peptidic inhibitor isoamyl- phosphonyl-Gly-Pro-Ala at 2.05 angstrom resolution.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		25% PEG 3350, 0.1 M NACL, 0.1 M MES PH 6.5

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.78

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.42	α = 90
b = 102.08	β = 90
c = 102.48	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	PIXEL	DECTRIS PILATUS 6M		2011-09-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29		ESRF	ID29

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	2.05	45.7	98.1	0.11	6	4		48639		2	26.9

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	2.05	2.16	98.5		0.59	2	4

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 2Y3U	2.05	45.75	46113	2453	97.62	0.22013	0.21765	0.26793	RANDOM	31.109

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]
15.93			-37.79		21.86

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.235
r_sphericity_free	28.603
r_dihedral_angle_4_deg	23.245
r_sphericity_bonded	17.72
r_dihedral_angle_3_deg	14.138
r_dihedral_angle_1_deg	4.436
r_rigid_bond_restr	3
r_angle_refined_deg	0.864
r_angle_other_deg	0.833
r_chiral_restr	0.052
r_bond_refined_d	0.005
r_gen_planes_refined	0.003
r_bond_other_d	0.002
r_gen_planes_other	0.002
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6279
Nucleic Acid Atoms
Solvent Atoms	280
Heterogen Atoms	4

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing