1JS8

Structure of a Functional Unit from Octopus Hemocyanin

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	277	PEG 3350, LITHIUM SULFATE, TRIS, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.54	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 92.86	α = 90
b = 168.39	β = 90
c = 58.29	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	279	IMAGE PLATE	FUJI		1989-06-01	M	MAD
2	1	x-ray	298	IMAGE PLATE	FUJI		1994-06-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE	1.3796,1.3779,1.2000	Photon Factory
2	SYNCHROTRON	NSLS BEAMLINE X4A	0.98	NSLS	X4A

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	MIRAS, combined with partial MAD phasing	2.3	10	2	39114	38644	1614		0.201	0.202	0.262	RANDOM

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	24.29
x_angle_d	1.69
x_improper_angle_d	1.443
x_mcbond_it	0.09
x_bond_d	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6134
Nucleic Acid Atoms
Solvent Atoms	296
Heterogen Atoms	163

Software

Software
Software Name	Purpose
DENZO	data reduction
ROTAVATA	data reduction
MADSYS	phasing
MLPHARE	phasing
X-PLOR	refinement
CCP4	data scaling
ROTAVATA	data scaling