1UHI

Crystal structure of i-aequorin

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1EJ3

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.1	293	ammonium sulfate, pH 7.1, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.98	37.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.263	α = 102.05
b = 54.432	β = 99.7
c = 57.523	γ = 103.8

Symmetry
Space Group	P 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	OXFORD PX210	mirrors		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL44XU	0.9	SPring-8	BL44XU

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	1.8	33.27	96.7	0.077	8.3	1.9	35601	35601			12.4

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)
	1.8	1.86	96.7		0.147		1.9

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	1EJ3	1.8	33.27	32560	1743	96.35	0.19126	0.18805	0.25035	RANDOM	15.305

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]
	-0.02		-0.05		0.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.364
r_scangle_it	4.534
r_scbond_it	2.994
r_angle_refined_deg	1.9
r_mcangle_it	1.691
r_angle_other_deg	1.05
r_mcbond_it	1.019
r_symmetry_hbond_refined	0.591
r_symmetry_vdw_refined	0.542
r_symmetry_vdw_other	0.446
r_xyhbond_nbd_refined	0.317
r_nbd_other	0.259
r_nbd_refined	0.249
r_chiral_restr	0.119
r_nbtor_other	0.09
r_bond_refined_d	0.021
r_gen_planes_refined	0.012
r_gen_planes_other	0.012
r_bond_other_d	0.003
r_dihedral_angle_2_deg
r_xyhbond_nbd_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3020
Nucleic Acid Atoms
Solvent Atoms	488
Heterogen Atoms	68

Software

Software
Software Name	Purpose
REFMAC	refinement
d*TREK	data reduction
d*TREK	data scaling
MOLREP	phasing