1MJP

METHIONINE APOREPRESSOR MUTANT (Q44K) COMPLEXED TO THE MINIMAL MET CONSENSUS OPERATOR

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		PROTEIN (10MG/ML) + DNA (4MG/ML) WAS CRYSTALLISED FROM 40% MPD, 100MM SODIUM CACODYLATE BUFFER, PH 7.0.

Crystal Properties
Matthews coefficient	Solvent content
2.82	56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 118.39	α = 90
b = 118.39	β = 90
c = 83.71	γ = 120

Symmetry
Space Group	P 62 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	100	IMAGE PLATE	RIGAKU RAXIS IIC	MIRRORS	1997-06-16	M	SINGLE WAVELENGTH

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

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	3.4	30	99.3	0.085	11.5	4		19851		3	9.8

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	3.4	3.58	100		0.085	0.231	3.3	4.1

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	DIFFERENCE FOURIER METHODS	THROUGHOUT	PDB ENTRY 1CMA	3.4	30	4864	480	95.2	0.226	0.226	0.309	RANDOM	72.8

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
x_dihedral_angle_d	24.3
x_angle_deg	1.6
x_improper_angle_d	1.11
x_bond_d	0.01
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1690
Nucleic Acid Atoms	382
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
CCP4	model building
X-PLOR	refinement
MOSFLM	data reduction
CCP4	data scaling
CCP4	phasing