3BXL

Crystal structure of the R-type calcium channeL (CaV2.3) IQ domain and CA2+calmodulin complex

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
3.71	66.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 124.606	α = 90
b = 124.606	β = 90
c = 74.024	γ = 90

Symmetry
Space Group	I 41 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		IMAGE PLATE	RIGAKU RAXIS IV		2006-10-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.54178

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	2.3	30					12496

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	2.3	30	12496	642	99.27	0.20768	0.20493	0.26162	RANDOM	41.193

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]
0.03			0.03		-0.05

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	27.406
r_dihedral_angle_4_deg	21.035
r_dihedral_angle_3_deg	17.444
r_dihedral_angle_1_deg	4.777
r_scangle_it	1.874
r_scbond_it	1.142
r_angle_refined_deg	1.098
r_mcangle_it	1.021
r_mcbond_it	0.622
r_nbtor_refined	0.296
r_nbd_refined	0.205
r_symmetry_vdw_refined	0.192
r_xyhbond_nbd_refined	0.117
r_symmetry_hbond_refined	0.11
r_chiral_restr	0.087
r_metal_ion_refined	0.084
r_bond_refined_d	0.008
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1291
Nucleic Acid Atoms
Solvent Atoms	138
Heterogen Atoms	14

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	phasing