1FMO

CRYSTAL STRUCTURE OF A POLYHISTIDINE-TAGGED RECOMBINANT CATALYTIC SUBUNIT OF CAMP-DEPENDENT PROTEIN KINASE COMPLEXED WITH THE PEPTIDE INHIBITOR PKI(5-24) AND ADENOSINE


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8
Temperature 277.0
Details ORTHORHOMBIC CRYSTALS OF THE TERNARY COMPLEX, COMPRISED OF MOUSE HIS6-RC SUBUNIT, PKI (5-24) AND ADENOSINE, WERE GROWN BY THE HANGING-DROP VAPOUR DIFFUSION METHOD USING 2-METHYL-2,4-PENTANEDIOL (MPD) AS THE PRECIPITATING AGENT. THE MOTHER-LIQUOR CONTAINED PROTEIN AT A CONCENTRATION OF 0.25 MM IN 100 MM BICINE BUFFER AT PH 8.0, 0.75 MM PKI(5-24), 4 MM ADENOSINE AND 4% MPD. THE RESERVOIR SOLUTION WAS MADE UP OF 20% MPD IN 100 MM BICINE BUFFER (PH 8.0). X-RAY DIFFRACTION QUALITY CRYSTALS (0.2 X 0.15 X 0.8 MM3) WERE GROWN AT 4 C IN APPROXIMATELY 4 - 6 WEEKS., vapor diffusion - hanging drop, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 73.08 α = 90
b = 78.44 β = 90
c = 80.49 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 277
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR XUONG-HAMLIN MULTIWIRE -- 1994-02-07
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH2R -- -- --

Data Collection

Overall
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
2.2 20 92.0 -- 0.064 -- 2.4 -- 21679 -- 0.0 24.0
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
2.2 2.3 84.0 -- 0.25 1.0 1.4 --

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
ISOMORPHOUS REPLACEMENT 2.2 10.0 -- 1.0 -- 19980 -- 85.0 -- -- 0.182 -- --
RMS Deviations
Key Refinement Restraint Deviation
t_nbd 0.04
t_gen_planes 0.01
t_trig_c_planes 0.01
t_incorr_chiral_ct 0.0
t_dihedral_angle_d 2.0
t_angle_deg 2.5
t_bond_d 0.012
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2949
Nucleic Acid Atoms 0
Heterogen Atoms 19
Solvent Atoms 90

Software

Computing
Computing Package Purpose
UCSD Data Reduction (intensity integration)
UCSD Data Reduction (data scaling)
X-PLOR 3.1 Structure Solution
TNT V. 5-E, X-PLOR 3.1 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.1 refinement
TNT version: 5E refinement
X-PLOR version: 3.1 model building