1OB0

Kinetic stabilization of Bacillus licheniformis alpha-amylase through introduction of hydrophobic residues at the surface

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7		PROTEIN WAS CRYSTALLIZED BY VAPOR DIFFUSION FROM DROPS CONTAINING 4 UL OF PROTEIN SOLUTION (10 MG/ML IN 50 MM TRIS/HCL, PH 8.0) PLUS 4 UL OF RESERVOIR SOLUTION (50 MM HEPES, 1 M AMMONIUM SULFATE, 1% (V/V) PEG 500, PH 7.0) EQUILIBRATED AGAINST 1 ML OF RESERVOIR SOLUTION.

Crystal Properties
Matthews coefficient	Solvent content
3	59

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 91.292	α = 90
b = 91.292	β = 90
c = 137.466	γ = 120

Symmetry
Space Group	P 61

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	278	IMAGE PLATE	MARRESEARCH	BEAM FOCUSSING MIRROR SYSTEM (MSC, USA)	1997-05-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.83	25.9	96.9	0.067	19	4		55286			19.7

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.83	1.85	96.1		0.444	2.1	2.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1BPL	1.83	25.89	53205	1448	93	0.147	0.147	0.15	0.154	RANDOM	23.7

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]
-0.34	0.23		-0.34		0.69

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	24
c_scangle_it	3.14
c_scbond_it	2.04
c_mcangle_it	1.66
c_angle_deg	1.4
c_mcbond_it	1.15
c_improper_angle_d	0.84
c_bond_d	0.01
c_bond_d_na
c_bond_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3909
Nucleic Acid Atoms
Solvent Atoms	324
Heterogen Atoms	4

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.