Experiment: 3MSS

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1IEP	1IEP.PDB

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.5	277	Buffer: 0.1M imidazole pH 6.5, 0.2M MgCl2, 2%EG, 13.8% PEG4000, VAPOR DIFFUSION, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 116.219	α = 90
b = 146.78	β = 127.07
c = 95.812	γ = 90

Symmetry
Space Group	C 1 2 1

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	MARMOSAIC 225 mm CCD		2006-08-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	1.0000	SLS	X10SA

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	1.95	52.93	95.7	0.041	16.3	3.25	89303	89303		-3

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)
1	1.95	2.04	78.9		0.281	2.85	1.98	9031

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1IEP.PDB	1.95	52.93	84760	4461	96.64	0.17203	0.16949	0.2204	RANDOM	28.453

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]
0.74		-0.83	-0.42		-1.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.221
r_dihedral_angle_4_deg	19.139
r_dihedral_angle_3_deg	15.672
r_dihedral_angle_1_deg	6.574
r_scangle_it	5.424
r_scbond_it	3.493
r_mcangle_it	2.216
r_angle_refined_deg	1.877
r_mcbond_it	1.254
r_chiral_restr	0.147

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.221
r_dihedral_angle_4_deg	19.139
r_dihedral_angle_3_deg	15.672
r_dihedral_angle_1_deg	6.574
r_scangle_it	5.424
r_scbond_it	3.493
r_mcangle_it	2.216
r_angle_refined_deg	1.877
r_mcbond_it	1.254
r_chiral_restr	0.147
r_bond_refined_d	0.024
r_gen_planes_refined	0.011

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8604
Nucleic Acid Atoms
Solvent Atoms	727
Heterogen Atoms	232

Software

Software
Software Name	Purpose
MOLREP	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling

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 R01GM157729.