1SHQ

Crystal structure of shrimp alkaline phosphatase with magnesium in M3

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	293	42% (w/v) saturated ammonium sulfate, 100mM tris-maleic acid pH 5.6, 100 mM MgCl2, 5% glycerol, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.92	57.56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 171.007	α = 90
b = 171.007	β = 90
c = 84.098	γ = 90

Symmetry
Space Group	P 43 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	77	CCD	ADSC QUANTUM 4		2002-05-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	1.2825	ESRF	ID14-4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	2	29.53	78786	4171	98.46	0.2153	0.21645	0.21529	0.23808	RANDOM	29.869

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]
-0.3			-0.3		0.61

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	17.104
r_dihedral_angle_1_deg	4.873
r_scangle_it	4.431
r_scbond_it	2.854
r_angle_refined_deg	1.928
r_mcangle_it	1.835
r_angle_other_deg	1.223
r_mcbond_it	1.093
r_nbtor_other	0.651
r_symmetry_vdw_other	0.289
r_nbd_refined	0.242
r_metal_ion_refined	0.238
r_symmetry_hbond_refined	0.229
r_nbd_other	0.216
r_symmetry_vdw_refined	0.189
r_xyhbond_nbd_refined	0.142
r_chiral_restr	0.122
r_xyhbond_nbd_other	0.031
r_bond_refined_d	0.026
r_gen_planes_refined	0.01
r_gen_planes_other	0.008
r_bond_other_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7462
Nucleic Acid Atoms
Solvent Atoms	102
Heterogen Atoms	54

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
MLPHARE	phasing