1SL7

Crystal structure of calcium-loaded apo-obelin from Obelia longissima

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	modified microbatch	7.5	277	20% w/v polyethylene glycol 10000, 0.1M HEPES, pH 7.5, modified microbatch, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.13	42.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 58.641	α = 90
b = 58.641	β = 90
c = 110.378	γ = 90

Symmetry
Space Group	P 41 21 2

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		2003-03-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	0.97	APS	22-ID

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	2.2	50		0.074	20.4	5.9		18694		-3

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)
	2.2	2.28	99.4		0.251	4.7

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 1JF2	2.2	51.99	10396	499	99.89	0.18856	0.18584	0.23938	RANDOM	27.934

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]
-0.46			-0.46		0.92

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.377
r_scangle_it	3.258
r_mcangle_it	2.808
r_scbond_it	2.32
r_mcbond_it	1.801
r_angle_refined_deg	1.307
r_symmetry_vdw_refined	0.211
r_nbd_refined	0.199
r_xyhbond_nbd_refined	0.163
r_metal_ion_refined	0.125
r_chiral_restr	0.092
r_symmetry_hbond_refined	0.09
r_bond_refined_d	0.014
r_gen_planes_refined	0.004
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_gen_planes_other
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1406
Nucleic Acid Atoms
Solvent Atoms	110
Heterogen Atoms	3

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	phasing