Experiment: 1IAQ

C-H-RAS P21 PROTEIN MUTANT WITH THR 35 REPLACED BY SER (T35S) COMPLEXED WITH GUANOSINE-5'-[B,G-IMIDO] TRIPHOSPHATE

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	5P21	PDB ENTRY 5p21

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293	PEG1500, calcium chloride, Tris, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.89	α = 90
b = 79.06	β = 90
c = 94.04	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	298	IMAGE PLATE	MARRESEARCH	monochromator	2000-02-03	M	SINGLE WAVELENGTH
2	1	x-ray	298	AREA DETECTOR	SIEMENS HI-STAR	monochromator	1999-07-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ENRAF-NONIUS FR571	1.5481

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
1,2	2.9	34.1	95.2	0.204	7.13	6.2	10369	60892	1	1	52.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.9	3	91.6		0.387	1.8	4.9	1051

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 5p21	2.9	25	2	9016	9016	1072		0.242	0.2523	0.282	0.2968	RANDOM	58

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
c_dihedral_angle_d	23.5
c_angle_deg	1.2
c_improper_angle_d	0.62
c_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3589
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	99

Software

Software
Software Name	Purpose
AMoRE	phasing
CNS	refinement
MAR345	data collection
XDS	data scaling