3QHC

Crystal structure of Symerythrin from Cyanophora paradoxa, reduced with dithionite

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	hanging drop	5.5	279	PEG3350, NH4Cl, BisTris, dithionite, pH 5.5, hanging drop, temperature 279K

Crystal Properties
Matthews coefficient	Solvent content
2.23	44.95

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.499	α = 90
b = 81.499	β = 90
c = 46.341	γ = 120

Symmetry
Space Group	P 32

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 Q315R		2010-09-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.1	0.976	ALS	5.0.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.25	30.6	100	0.101	0.101	15	11.9	95243	95243			11

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.25	1.31	100		0.405	0.405	5.4	10.4	13875

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.25	26.68	95243	95216	4767	99.99	0.116	0.116	0.1147	0.1414	RANDOM	16.7486

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]
-0.73	-0.36		-0.73		1.09

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.233
r_sphericity_free	17.935
r_dihedral_angle_4_deg	17.556
r_dihedral_angle_3_deg	14.146
r_sphericity_bonded	10.279
r_scangle_it	8.041
r_scbond_it	5.716
r_dihedral_angle_1_deg	5.504
r_mcangle_it	3.815
r_rigid_bond_restr	2.86
r_angle_refined_deg	2.837
r_mcbond_it	2.81
r_mcbond_other	1.651
r_angle_other_deg	1.358
r_chiral_restr	0.171
r_bond_refined_d	0.022
r_gen_planes_refined	0.015
r_gen_planes_other	0.003
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2764
Nucleic Acid Atoms
Solvent Atoms	555
Heterogen Atoms	6

Software

Software
Software Name	Purpose
SCALA	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction
PHENIX	phasing