2FA9

The crystal structure of Sar1[H79G]-GDP provides insight into the coat-controlled GTP hydrolysis in the disassembly of COP II

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1F6B

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	EVAPORATION, RECRYSTALLIZATION	5.8	298	28%(w/v)Polyethylene Glycol-4000, 100mM sodium acetate, 0.2M ammonium sulfate , pH 5.8, EVAPORATION, RECRYSTALLIZATION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.63	53.29

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.215	α = 90
b = 61.62	β = 72.75
c = 71.165	γ = 90

Symmetry
Space Group	P 1 21 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	ENRAF-NONIUS		2005-08-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ENRAF-NONIUS FR591	1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.5	46	88.4			15488	13619	2	2.13	21

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.5		88.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	1F6B	2.5	45.65	15488	13619	824	88.4	0.218	0.218	0.289	RANDOM	26.7

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]
9.99		-2.62	-9.66		-0.33

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.6
c_scangle_it	4.29
c_mcangle_it	3.27
c_scbond_it	3.2
c_mcbond_it	2.05
c_angle_deg	1.4
c_improper_angle_d	0.74
c_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2736
Nucleic Acid Atoms
Solvent Atoms	121
Heterogen Atoms	68

Software

Software
Software Name	Purpose
CNS	refinement
PROTEUM PLUS	data reduction
LSCALE	data scaling
AMoRE	phasing

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.