1B1Y

SEVENFOLD MUTANT OF BARLEY BETA-AMYLASE

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1BTC	PDB ENTRY 1BTC

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.1		HUNGING DROP VAPOR DIFFUSION AGAINST 0.1 M PIPES PH 7.1, 0.1 M MGAC2 AND 14% PEG 6000 WITH A PROTEIN CONCENTRATION OF 3 MG/ML., vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
2.8	57.43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.11	α = 90
b = 72.11	β = 90
c = 250.51	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	291	AREA DETECTOR	SIEMENS		1996-04-01	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	2.5	20	94.3	0.086		5.4		22631		1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	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	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1BTC	2.5	10	2	18732		79.9	0.187	0.187	0.256	RANDOM	31.14

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]
-2.89			-2.89		5.79

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	24.77
x_angle_deg	3.24
x_improper_angle_d	1.22
x_bond_d	0.014
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	3973
Nucleic Acid Atoms
Solvent Atoms	140
Heterogen Atoms	35

Software

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