Experiment: 3PHA

The crystal structure of the W169Y mutant of alpha-glucosidase (gh31 family) from Ruminococcus obeum atcc 29174 in complex with acarbose

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3N04

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	289	0.1M BIS-TRIS, 25% PEG3350, 10% ACARBOSE, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.032	α = 90
b = 125.955	β = 107.72
c = 133.58	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315	Mirror	2010-03-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97929	APS	19-ID

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	2.173	42.5	98.8	0.109	14.4	3.6	143009	143009

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)
	2.18	2.22	91.7		0.58	1.4	2.9	6648

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	3N04	2.173	42.415	0.09	131921	131921	6586	90.42	0.2029	0.2029	0.1995	0.1977	0.2653	0.2618	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]
-11.3062		-2.6081	1.3975		9.9087

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	18.969
f_angle_d	1.086
f_chiral_restr	0.073
f_bond_d	0.008
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	21770
Nucleic Acid Atoms
Solvent Atoms	601
Heterogen Atoms	176

Software

Software
Software Name	Purpose
SBC-Collect	data collection
MOLREP	phasing
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling