Experiment: 1AB6

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3CHY

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.2	293	THE PROTEIN WAS CRYSTALLIZED WITH 3.0M AMMONIUM SULFATE, PH7.2 AT 20C., temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.15	61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.07	α = 90
b = 54.07	β = 90
c = 91.72	γ = 120

Symmetry
Space Group	P 31

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	293	IMAGE PLATE	MARRESEARCH	SLITS	1995-07-28	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ELLIOTT GX-21

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	15	86	0.048		1.8		13544		2	40.4

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)
	2.2	2.34	55.6		0.29

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR	A POSTERIORI	3CHY	2.2	10	2	11179	1148	74.2	0.192	0.192	0.19	0.28	RANDOM	35.5

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
x_dihedral_angle_d	23.4
x_scangle_it	7.07
x_scbond_it	4.69
x_mcangle_it	4.41
x_mcbond_it	2.84
x_angle_deg	1.4
x_improper_angle_d	1.25
x_bond_d	0.008
x_bond_d_na
x_bond_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1908
Nucleic Acid Atoms
Solvent Atoms	41
Heterogen Atoms

Software

Software
Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
XDS	data reduction
XDS	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.