1B9Z

BACILLUS CEREUS BETA-AMYLASE COMPLEXED WITH MALTOSE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4.6		HANGING DROP VAPOR DIFFUSION AGAINST 0.1 M ACETATE BUFFER PH 4.6, 18% PEG 6000 AND 5% SATN. AMMONIUM SULFATE WITH A PROTEIN CONCENTRATION OF 10MG/ML.

Crystal Properties
Matthews coefficient	Solvent content
3.06	57

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 58.16	α = 90
b = 93.74	β = 102.44
c = 66.66	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	291	AREA DETECTOR	SIEMENS HI-STAR		1997-03-27	M	SINGLE WAVELENGTH

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

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2	30	83.4	0.046		2.33		39463		1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.999	2.07	38.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MIR	FREE R	2.1	11	2	33365		82.3	0.17	0.22	RANDOM	23

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]
5.667		0.993	-5.99		0.327

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	24.1
x_angle_deg	3.07
x_improper_angle_d	1.06
x_bond_d	0.015
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4119
Nucleic Acid Atoms
Solvent Atoms	275
Heterogen Atoms	102

Software

Software
Software Name	Purpose
SAINT	data scaling
SAINT	data reduction
PHASES	phasing
X-PLOR	refinement