1GSQ

THREE-DIMENSIONAL STRUCTURE, CATALYTIC PROPERTIES AND EVOLUTION OF A SIGMA CLASS GLUTATHIONE TRANSFERASE FROM SQUID, A PROGENITOR OF THE LENS-CRYSTALLINS OF CEPHALOPODS

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
3.17	61.16

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.76	α = 90
b = 72.76	β = 90
c = 94.63	γ = 120

Symmetry
Space Group	P 31 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		AREA DETECTOR	ELECTRONICS COMPUTING TECHNOLOGIES		1993-01-11

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1

Data Collection

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2.4	6	4	8302		75	0.18			27.64

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
p_orthonormal_tor	25.9
p_staggered_tor	22.4
p_planar_tor	3.5
p_scangle_it	1.371
p_mcangle_it	0.942
p_scbond_it	0.888
p_mcbond_it	0.55
p_xhyhbond_nbd	0.227
p_chiral_restr	0.221
p_multtor_nbd	0.22
p_singtor_nbd	0.205
p_angle_d	0.036
p_planar_d	0.033
p_plane_restr	0.021
p_bond_d	0.018
p_angle_deg
p_hb_or_metal_coord
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1598
Nucleic Acid Atoms
Solvent Atoms	154
Heterogen Atoms	32

Software

Software
Software Name	Purpose
GPRLSA	refinement
PROLSQ	refinement
XENGEN	data reduction