2MAT

E.COLI METHIONINE AMINOPEPTIDASE AT 1.9 ANGSTROM RESOLUTION


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1MAT 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.1CRYSTALS OF THE CO(II)-SUBSTITUTED ENZYME WERE GROWN AT ROOM TEMPERATURE BY VAPOR DIFFUSION IN 20-30 UL SITTING DROPS AFTER MIXING THE PROTEIN, 12 MG/ML SOLUTION IN STORAGE BUFFER(25 MM HEPES PH 6.8, 25 MM K2SO4, 100 MM NACL, 1 MM COCL2, 15 MM METHIONINE),CONTAINING 48.8 MM N-OCTANOYL SUCROSE, 1:1 WITH WELL SOLUTIONS (24-26% PEG4000, 0.1M HEPES PH7.0-7.2,FRESH 2 MM COCL2)., pH 7.1, VAPOR DIFFUSION, HANGING DROP
Crystal Properties
Matthews coefficientSolvent content
2.0539.4

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 39.299α = 90
b = 67.683β = 111.24
c = 48.863γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298IMAGE PLATERIGAKU RAXIS IV1998-04-10MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU200

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.935.51000.07722.75.11844415.5
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.91.971000.2516.1

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENT1MAT1.935.518444184441000.155
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
KeyRefinement Restraint Deviation
t_dihedral_angle_d16.4
t_it4.1
t_angle_deg2.3
t_gen_planes0.013
t_nbd0.013
t_bond_d0.012
t_trig_c_planes0.008
t_incorr_chiral_ct
t_pseud_angle
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1991
Nucleic Acid Atoms
Solvent Atoms96
Heterogen Atoms4

Software

Software
Software NamePurpose
AMoREphasing
TNTrefinement
DENZOdata reduction
SCALEPACKdata scaling