3DOS

Crystal structure of the complex of the Caf1M chaperone with the mini-fiber of two Caf1 subunits (Caf1:Caf1), carrying the Thr7Phe and Ala9Val mutations in the Gd donor strand

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.9	295	16-17% PEG 8000 in 0.1 M Na cacodylate and 0.2 M Ca acetate, pH 5.9, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.37	48.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.234	α = 90
b = 91.181	β = 90
c = 166.024	γ = 90

Symmetry
Space Group	P 21 21 21

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	MAR CCD 165 mm	Bent germanium crystal	2006-06-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I911-2	1.00	MAX II	I911-2

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	2.3	40	92.1	0.087	13.6	3.5		45057	2	2	24.13

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.3	2.42	90.2		2.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1Z9S	2.4	31.64	2	39785	37777	2008	91.12	0.217	0.21653	0.21402	0.26434	RANDOM	24.133

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]
-0.13			1.56		-1.43

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.473
r_dihedral_angle_4_deg	20.571
r_dihedral_angle_3_deg	17.502
r_dihedral_angle_1_deg	7.139
r_scangle_it	3.985
r_scbond_it	2.504
r_mcangle_it	1.678
r_angle_refined_deg	1.542
r_mcbond_it	1.084
r_nbtor_refined	0.309

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.473
r_dihedral_angle_4_deg	20.571
r_dihedral_angle_3_deg	17.502
r_dihedral_angle_1_deg	7.139
r_scangle_it	3.985
r_scbond_it	2.504
r_mcangle_it	1.678
r_angle_refined_deg	1.542
r_mcbond_it	1.084
r_nbtor_refined	0.309
r_symmetry_vdw_refined	0.237
r_nbd_refined	0.217
r_symmetry_hbond_refined	0.209
r_xyhbond_nbd_refined	0.15
r_chiral_restr	0.096
r_bond_refined_d	0.015
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7181
Nucleic Acid Atoms
Solvent Atoms	192
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345dtb	data collection
MOSFLM	data reduction
SCALA	data scaling
MOLREP	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 R01GM133198.