Experiment: 2P8N

Ricin a-chain (recombinant) complex with adenine

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1IFT	PDB ENTRY 1IFT

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.2	295	20% AMMONIUM SULFATE, 50 MIMILLIMOLAR SODIUM ACETATE, PH 4.2, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 295K, pH 4.20

Crystal Properties
Matthews coefficient	Solvent content
2.7	53.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 68.162	α = 90
b = 68.162	β = 90
c = 141.195	γ = 90

Symmetry
Space Group	P 41 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC		2005-05-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X12C	1.1	NSLS	X12C

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	1.94	33.67	99.3	0.128	17.8	12.4		26260			10.4

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)
	1.94	2.06	99.3		0.339	8.88	6.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (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 1IFT	1.94	33.97	25260	1302	99.3	0.2651	0.2651	0.265	0.2461	0.301	0.2476	RANDOM	20.3

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]
2.2			2.2		-4.39

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23
c_angle_deg	1.2
c_improper_angle_d	0.78
c_bond_d	0.011
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2037
Nucleic Acid Atoms
Solvent Atoms	135
Heterogen Atoms	25

Software

Software
Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
CNS	phasing