2ASV

X-Ray studies on protein complexes: Enzymatic catalysis in Crystals of E. coli Maltodextrin Phosphorylase (MalP)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	PEG 4000, lithium chloride, (hydroxymethyl) aminomethane, maltopentaose, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.3	46.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.327	α = 90
b = 104.723	β = 90
c = 214.787	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	CCD	MARRESEARCH	mirrors	2004-03-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R	1.2	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	1.95	15	97.8	0.119	10.1	3.9	121744	119849			25.9

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	2.06	91.1		0.476	1.8	2.7	16075

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 1L5V	1.95	15	113766	6018	97.46	0.18168	0.17939	0.22604	RANDOM	30.275

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]
-0.8			-1		1.8

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.442
r_scangle_it	4.099
r_angle_other_deg	3.679
r_scbond_it	2.534
r_angle_refined_deg	1.633
r_mcangle_it	1.568
r_mcbond_it	0.88
r_symmetry_vdw_other	0.325
r_nbd_other	0.286
r_symmetry_vdw_refined	0.253
r_nbd_refined	0.225
r_symmetry_hbond_refined	0.184
r_xyhbond_nbd_refined	0.164
r_nbtor_other	0.11
r_chiral_restr	0.105
r_bond_refined_d	0.019
r_gen_planes_other	0.011
r_gen_planes_refined	0.008
r_bond_other_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	12778
Nucleic Acid Atoms
Solvent Atoms	1184
Heterogen Atoms	174

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
CCP4	data scaling