1MRA

MANDELATE RACEMASE MUTANT D270N CO-CRYSTALLIZED WITH (S)-ATROLACTATE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				THE INHIBITOR CONSTANT (K SUB I) FOR (S)-ATROLACTATE IS APPROXIMATELY 0.2 MILLIMOLAR; CRYSTALS WERE OBTAINED FROM A SOLUTION THAT CONTAINED 5 MILLIMOLAR INHIBITOR.

Crystal Properties
Matthews coefficient	Solvent content
2.71	55

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 125	α = 90
b = 125	β = 90
c = 107.1	γ = 90

Symmetry
Space Group	I 4 2 2

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	SIEMENS		1993-07-25	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 (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION		2.1	20	1	19219		74.6

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
t_dihedral_angle_d	25
t_it	8.1
t_angle_deg	1.72
t_gen_planes	0.014
t_bond_d	0.013
t_trig_c_planes	0.012
t_nbd	0.003
t_incorr_chiral_ct
t_pseud_angle

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2698
Nucleic Acid Atoms
Solvent Atoms	111
Heterogen Atoms	13

Software

Software
Software Name	Purpose
TNT	refinement
XDS	data reduction
XSCALE	data scaling