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
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1APM | PDB ENTRY 1APM |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 8 | 277 | 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 Properties | |
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Matthews coefficient | Solvent content |
2.7 | 54 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 73.08 | α = 90 |
b = 78.44 | β = 90 |
c = 80.49 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 277 | AREA DETECTOR | XUONG-HAMLIN MULTIWIRE | 1994-02-07 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU RUH2R |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | ||||||||
1 | 2.2 | 20 | 92 | 0.064 | 7.3 | 2.4 | 21679 | 24 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
2.2 | 2.3 | 84 | 0.25 | 1 | 1.4 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work (Depositor) | R-Free (Depositor) | Mean Isotropic B | ||||||||
X-RAY DIFFRACTION | ISOMORPHOUS REPLACEMENT | PDB ENTRY 1APM | 2.2 | 10 | 1 | 19980 | 85 | 0.182 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
t_angle_deg | 2.5 |
t_dihedral_angle_d | 2 |
t_nbd | 0.04 |
t_bond_d | 0.012 |
t_trig_c_planes | 0.01 |
t_gen_planes | 0.01 |
t_incorr_chiral_ct | |
t_pseud_angle | |
t_it |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2949 |
Nucleic Acid Atoms | |
Solvent Atoms | 90 |
Heterogen Atoms | 19 |
Software
Software | |
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Software Name | Purpose |
X-PLOR | model building |
TNT | refinement |
X-PLOR | refinement |
UCSD | data reduction |
UCSD | data scaling |
X-PLOR | phasing |