9US4 | pdb_00009us4

Klebsiella pneumoniae maltohexaose-producing alpha-amylase in complex with acarbose

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	9US3

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICROBATCH	6.2	293	8% polyethylene glycol 3000, 4% polyethylene glycol 3350, 40 mM sodium thiocyanate

Crystal Properties
Matthews coefficient	Solvent content
2.22	44.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.913	α = 90
b = 108.244	β = 96.765
c = 82.284	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	95	CCD	ADSC QUANTUM 270		2013-02-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NE3A	1.00	Photon Factory	AR-NE3A

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	1.95	100	100	0.156	12	14.4		94976

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	1.95	1.98			0.795	2.3

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 (All)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	9US3	1.95	29.681	92514	4624	97.527	0.191	0.1891	0.1963	0.2266	0.2319	26.503

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]
0.005		-0.008	0.013		-0.015

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.05
r_dihedral_angle_3_deg	13.697
r_dihedral_angle_4_deg	12.629
r_dihedral_angle_1_deg	6.665
r_lrange_it	3.555
r_lrange_other	3.516
r_mcangle_it	1.22
r_mcangle_other	1.22
r_angle_refined_deg	1.178
r_angle_other_deg	1.11
r_scangle_it	1.017
r_scangle_other	1.017
r_mcbond_it	0.67
r_mcbond_other	0.67
r_scbond_it	0.572
r_scbond_other	0.572
r_nbd_refined	0.175
r_symmetry_nbd_other	0.164
r_nbd_other	0.161
r_nbtor_refined	0.158
r_xyhbond_nbd_refined	0.109
r_symmetry_xyhbond_nbd_refined	0.099
r_symmetry_nbd_refined	0.094
r_metal_ion_refined	0.087
r_symmetry_nbtor_other	0.071
r_chiral_restr_other	0.045
r_chiral_restr	0.04
r_gen_planes_refined	0.003
r_bond_refined_d	0.002
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10353
Nucleic Acid Atoms
Solvent Atoms	1081
Heterogen Atoms	301

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
REFMAC	phasing