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)
Type	Source	Accession Code	Details
experimental model	PDB	1APM	PDB ENTRY 1APM

Crystallization

Crystalization Experiments
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
Matthews coefficient	Solvent content
2.7	54

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 #	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
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH2R

Data Collection

Overall
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
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
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	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	ISOMORPHOUS REPLACEMENT	PDB ENTRY 1APM	2.2	10	1	19980		85	0.182

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
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
Non-Hydrogen Atoms	Number
Protein Atoms	2949
Nucleic Acid Atoms
Solvent Atoms	90
Heterogen Atoms	19

Software

Software
Software Name	Purpose
X-PLOR	model building
TNT	refinement
X-PLOR	refinement
UCSD	data reduction
UCSD	data scaling
X-PLOR	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.