3EKJ

Calcium-free GCaMP2 (calcium binding deficient mutant)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	298	0.2 M Lithium sulfate monohydrate, 0.1 M BIS-TRIS pH 5.5, 25% w/v Polyethylene glycol 3,350, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.13	42.29

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 211.871	α = 90
b = 47.674	β = 97.61
c = 42.991	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	MAR CCD 165 mm		2008-07-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 31-ID	0.9793	APS	31-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.8	31.94	98.9	0.154		7.1		10580

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	2.8	2.95	98.6		0.617	3.2	7.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	PDB entry 3EK7	2.8	31.88	10024	516	98.38	0.21272	0.20917	0.28043	RANDOM	25.982

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]
7.64		1.01	-3.68		-3.69

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.114
r_dihedral_angle_3_deg	19.87
r_dihedral_angle_4_deg	17.144
r_dihedral_angle_1_deg	7.583
r_scangle_it	2.544
r_angle_refined_deg	1.678
r_scbond_it	1.611
r_mcangle_it	1.092
r_mcbond_it	0.942
r_angle_other_deg	0.9
r_nbd_refined	0.226
r_symmetry_vdw_refined	0.222
r_nbd_other	0.205
r_symmetry_vdw_other	0.205
r_nbtor_refined	0.186
r_xyhbond_nbd_refined	0.125
r_nbtor_other	0.117
r_mcbond_other	0.106
r_chiral_restr	0.084
r_bond_refined_d	0.015
r_gen_planes_refined	0.007
r_bond_other_d	0.006
r_gen_planes_other	0.004
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2400
Nucleic Acid Atoms
Solvent Atoms	5
Heterogen Atoms

Software

Software
Software Name	Purpose
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
DENZO	data reduction
SCALEPACK	data scaling