Experiment: 3IGD

Crystal structure of Mtu recA intein, splicing domain

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2IN9

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	298	1.1 M Na/K tartrate, 0.1 M HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.6	52.63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 90.15	α = 90
b = 90.15	β = 90
c = 39.46	γ = 90

Symmetry
Space Group	P 43 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	IMAGE PLATE	RIGAKU RAXIS IV++	osmics	2008-07-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	1.54

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	2.4	30	98.9	0.082	7.7	4.72	6680	6680

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)
	2.4	2.49	99.8		0.496	2.1	4.73

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-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2IN9	2.4	29.69	6673	659	98.8	0.289	0.2891	0.337	0.3392	RANDOM	60.69

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]
9.48			9.48		-18.97

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	24.9
c_scangle_it	2.71
c_mcangle_it	2.44
c_scbond_it	1.77
c_angle_deg	1.5
c_mcbond_it	1.42
c_improper_angle_d	0.79
c_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1090
Nucleic Acid Atoms
Solvent Atoms	32
Heterogen Atoms	1

Software

Software
Software Name	Purpose
PHASER	phasing
CNS	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection
CrystalClear	data reduction
CrystalClear	data scaling