1JDD

MUTANT (E219Q) MALTOTETRAOSE-FORMING EXO-AMYLASE COCRYSTALLIZED WITH MALTOTETRAOSE (CRYSTAL TYPE 2)

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.76	56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.6	α = 90
b = 170.7	β = 90
c = 46.8	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		IMAGE PLATE	RIGAKU RAXIS IIC		1992-11-27	M

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-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		1.9	10	2	35190			0.191

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_transverse_tor	32.7
p_staggered_tor	19.1
p_planar_tor	2.6
p_scangle_it	2.145
p_scbond_it	1.352
p_mcangle_it	1.266
p_mcbond_it	0.725
p_multtor_nbd	0.202
p_chiral_restr	0.187
p_singtor_nbd	0.187
p_xyhbond_nbd	0.181
p_planar_d	0.042
p_angle_d	0.035
p_bond_d	0.015
p_plane_restr	0.013
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3297
Nucleic Acid Atoms
Solvent Atoms	227
Heterogen Atoms	46

Software

Software
Software Name	Purpose
X-PLOR	model building
PROFFT	refinement
X-PLOR	refinement
X-PLOR	phasing