1H65

Crystal structure of pea Toc34 - a novel GTPase of the chloroplast protein translocon

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	277	THE TOC34 CRYSTALS WERE GROWN AT 4 DEGREES CELSIUS BY HANGING DROP VAPOR DIFFUSION. A 2-MICROLITER SOLUTION (10 MG/ML IN 50 MM TRIS-HCL AT PH 8.0 AND 0.1 M NACL) WAS MIXED WITH A 2-MICROLITER RESERVOIR SOLUTION CONTAINING 22% PEGMME 5K AND 10% GLYCEROL IN 0.1 M HEPES AT PH 6.5.

Crystal Properties
Matthews coefficient	Solvent content
2.13	42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 143.16	α = 90
b = 78.673	β = 91.44
c = 67.279	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	110	CCD	ADSC CCD		1998-06-15	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-18B	0.9796, 0.9794, 0.9680, 0.9802	Photon Factory	BL-18B

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	31	99	0.056	8	7		50147		2	6.5

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	2	2.1	98.8		0.223	1.9	2.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	MAD	THROUGHOUT	2	22.42	2	79906	7786	80.5	0.186	0.186	0.23	RANDOM	24.9

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]
7.11		-1.7	-3.1		-4.01

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	21.9
c_scangle_it	11.97
c_scbond_it	11.54
c_mcangle_it	5.71
c_mcbond_it	3.68
c_angle_deg	1.2
c_improper_angle_d	0.97
c_bond_d	0.009
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5890
Nucleic Acid Atoms
Solvent Atoms	670
Heterogen Atoms	87

Software

Software
Software Name	Purpose
CNS	refinement
DPS	data reduction
MOSFLM	data reduction
SCALEPACK	data scaling
SOLVE	phasing