7TAA | pdb_00007taa

FAMILY 13 ALPHA AMYLASE IN COMPLEX WITH ACARBOSE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5		18% MM PEG 5000, 5MM CALCIUM CHLORIDE, 0.1M HEPES BUFFER, PH 7.5. METHOD: HANGING DROP VAPOUR DIFFUSION. THE NATIVE CRYSTALS WERE SOAKED FOR 6 HOURS IN STABILIZING SOLUTION CONTAINING 15 MM OF ACARBOSE., vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
2.19	44

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.04	α = 90
b = 67.183	β = 90
c = 133.56	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	120	IMAGE PLATE	MARRESEARCH	LONG MIRRORS	1995-10-17	M

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

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	1.98	20	97	0.088	12.6	3.7		63935

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)
	1.98	2.09	94.2		0.291	5.1	3.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	NATIVE STRUCTURE	FREE R	1.98	20	31015	1553	97	0.159	0.1548	0.236	RANDOM

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
p_orthonormal_tor	34.9
p_staggered_tor	18.3
p_scangle_it	5.423
p_planar_tor	4.3
p_scbond_it	4.183
p_mcangle_it	3.941
p_mcbond_it	3.266
p_multtor_nbd	0.184
p_singtor_nbd	0.176
p_xyhbond_nbd	0.173
p_chiral_restr	0.136
p_planar_d	0.037
p_angle_d	0.033
p_bond_d	0.014
p_angle_deg
p_hb_or_metal_coord
p_plane_restr
p_xhyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3688
Nucleic Acid Atoms
Solvent Atoms	465
Heterogen Atoms	66

Software

Software
Software Name	Purpose
DENZO	data reduction
Agrovata	data reduction
REFMAC	refinement
Agrovata	data scaling