4MVU

Structural Basis for Ca2+ Selectivity of a Voltage-gated Calcium Channel

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3RVY	PDB ENTRY 3RVY

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.75	298	CHAPSO:DMPC bicelles, 0.1M Na-Acetate, pH4.75, 2M Ammonium Sulfate, 28% Glucose, 15mM Calcium Chloride, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 177.765	α = 90
b = 177.685	β = 132.64
c = 131.205	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	100	CCD	ADSC QUANTUM 315			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.1	1.75	ALS	8.2.1

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	3.198	30	93.4	0.076		5	46122	46122	1	1

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	3.198	3.37	100		0.5	2.5	4.9

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3RVY	3.198	29.89	43749	43749	2335	93.2	0.23802	0.23671	0.24	0.26254	0.26	RANDOM	95.553

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]
2.13		-1.09	3.45		-1.7

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.409
r_long_range_B_refined	19.143
r_long_range_B_other	19.142
r_dihedral_angle_3_deg	18.89
r_dihedral_angle_4_deg	18.138
r_mcangle_other	13.965
r_mcangle_it	13.961
r_scangle_other	12.676
r_mcbond_it	9.223
r_mcbond_other	9.223
r_scbond_other	8.291
r_scbond_it	8.261
r_dihedral_angle_1_deg	5.027
r_angle_refined_deg	1.584
r_angle_other_deg	0.849
r_chiral_restr	0.075
r_bond_refined_d	0.013
r_gen_planes_refined	0.007
r_bond_other_d	0.004
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7196
Nucleic Acid Atoms
Solvent Atoms	4
Heterogen Atoms	191

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHENIX	model building
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
PHENIX	phasing