3BAX | pdb_00003bax

N298S Variant of Human Pancreatic Alpha-Amylase in Complex with Azide

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1BSI	PDB Entry 1BSI

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	300	60% 2-methylpentane-2,4-diol, 100 mM cacodylate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 300K

Crystal Properties
Matthews coefficient	Solvent content
2.06	40.16

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.07	α = 90
b = 67.84	β = 90
c = 130.12	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MAR scanner 345 mm plate	mirrors		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU300	1.5418

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	1.9	30		0.036	34.2	7.1	36630	36630

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB Entry 1BSI	1.9	30	33829	1678	91.1	0.1549	0.1613	0.1902	19.47

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
c_angle_deg	1.05
c_bond_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3943
Nucleic Acid Atoms
Solvent Atoms	617
Heterogen Atoms	25

Software

Software
Software Name	Purpose
MAR345dtb	data collection
CNS	refinement
MOSFLM	data reduction
SCALA	data scaling
CNS	phasing