2ECP

THE CRYSTAL STRUCTURE OF THE E. COLI MALTODEXTRIN PHOSPHORYLASE COMPLEX

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.5		pH 8.5

Crystal Properties
Matthews coefficient	Solvent content
2.4	55

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.49	α = 90
b = 105.84	β = 90
c = 217.72	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 180 mm plate	MIRRORS		M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R		ELETTRA	5.2R

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	2.95	33.6	88.9	0.068	12.5	2.6		33657			44.7

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	2.95	3.11	78.2		0.157	5.3	2.1

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.95	15	32524	852	88.9	0.241	0.293	RANDOM	53.6

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_transverse_tor	32.1
p_staggered_tor	21.1
p_special_tor	15
p_scangle_it	4.71
p_planar_tor	3.7
p_mcangle_it	3.02
p_scbond_it	2.9
p_mcbond_it	1.8
p_xhyhbond_nbd	0.3
p_multtor_nbd	0.262
p_singtor_nbd	0.202
p_xyhbond_nbd	0.201
p_chiral_restr	0.123
p_hb_or_metal_coord	0.05
p_planar_d	0.045
p_angle_d	0.043
p_plane_restr	0.0223
p_bond_d	0.014
p_angle_deg
p_orthonormal_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	12738
Nucleic Acid Atoms
Solvent Atoms	93
Heterogen Atoms	130

Software

Software
Software Name	Purpose
AMoRE	phasing
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling