3DC0

Crystal structure of native alpha-amylase from Bacillus sp. KR-8104

Experimental procedure

Experimental method	LAUE
Source type	SYNCHROTRON
Source details	NSRRC BEAMLINE BL13B1
Synchrotron site	NSRRC
Beamline	BL13B1
Temperature [K]	100
Detector technology	CCD
Collection date	2007-09-28
Detector	MARMOSAIC 325 mm CCD
Spacegroup name	C 2 2 21
Unit cell lengths	140.176, 163.141, 73.989
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	30.000 - 2.780
Rwork	0.196
R-free	0.23320
Starting model (for MR)	1ua7
RMSD bond length	0.006
RMSD bond angle	1.210
Data reduction software	HKL-2000
Data scaling software	HKL-2000
Phasing software	CNS
Refinement software	CNS

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	30.000	2.890
High resolution limit [Å]	2.780	2.780
Number of reflections	20572
<I/σ(I)>	28.2	3.1
Completeness [%]	96.5	100
Redundancy	4.2	7.6

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	8	291	10% PEG 8000, 100mM Imidazole, 200mM Ca(OAC)2, VAPOR DIFFUSION, HANGING DROP, temperature 291K