3JTR

Mutations in Cephalosporin Acylase Affecting Stability and Autoproteolysis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	295	0.1M Na-cacodylate (pH 6.5), 0.2M magnesium chloride, PEG 3000, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
3.34	63.23

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.816	α = 90
b = 73.816	β = 90
c = 381.324	γ = 90

Symmetry
Space Group	P 41 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 210		2006-04-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PAL/PLS BEAMLINE 4A	1.00000	PAL/PLS	4A

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	2.5	20	90.3	0.07	24.3		37974	34291

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)
	2.5	2.6	79.2		0.16	12.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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 2ADV	2.5	19.5	37847	34221	1711	90.42	0.184	0.182	0.224	RANDOM	27.609

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]
0.02			0.02		-0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.48
r_dihedral_angle_4_deg	18.611
r_dihedral_angle_3_deg	15.109
r_dihedral_angle_1_deg	6.275
r_sphericity_free	4.729
r_scangle_it	2.261
r_sphericity_bonded	1.654
r_scbond_it	1.438
r_angle_refined_deg	1.312
r_mcangle_it	1.047
r_rigid_bond_restr	0.977
r_mcbond_it	0.614
r_nbtor_refined	0.31
r_symmetry_vdw_refined	0.228
r_nbd_refined	0.206
r_symmetry_hbond_refined	0.19
r_xyhbond_nbd_refined	0.147
r_chiral_restr	0.091
r_bond_refined_d	0.012
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5355
Nucleic Acid Atoms
Solvent Atoms	255
Heterogen Atoms	6

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing