3TZ1

Crystal structure of the Ca2+-saturated C-terminal domain of Akazara scallop troponin C in complex with a troponin I fragment

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.6	293	30% PEG 4000, 0.1 M sodium acetate pH 4.6 and 0.2 M ammonium acetate, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.81	32.03

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 32.13	α = 90
b = 42.151	β = 90
c = 59.966	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	95	CCD	ADSC QUANTUM 210		2006-03-03	M	SINGLE WAVELENGTH
2	1	x-ray	95	CCD	ADSC QUANTUM 210		2006-10-31	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NW12A	1.000	Photon Factory	AR-NW12A
2	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NW12A	0.97854, 0.9791, 0.974	Photon Factory	AR-NW12A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	1.8	50	99.5	0.053	0.053		3.8	8076	8036		-3	24.87

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1,2	1.8	1.86	97.8		0.266	5.5	3.3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	MAD	1.8	28.321	1.38	7950	7950	368	99.35	0.2047	0.203	0.2367	random	32.3004

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]
6.7015			-10.2534		3.5519

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.852
f_angle_d	0.978
f_chiral_restr	0.082
f_bond_d	0.005
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	752
Nucleic Acid Atoms
Solvent Atoms	27
Heterogen Atoms	1

Software

Software
Software Name	Purpose
SOLVE	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.