2NT9

Crystal structure of pectin methylesterase D178A mutant in complex with hexasaccharide IV

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1QJV	PDB entry 1QJV

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	293	1.6 M Ammonium sulfate, 0.1 M MES pH 6.5, 10% v/v Dioxane, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.91	57.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.402	α = 90
b = 85.75	β = 93.31
c = 97.642	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	monochromator	2006-05-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	1.00000	ESRF	ID29

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	1.9	64.15	90.1	0.103	9.1	2.2	59470	59470			14.95

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	1.9	2	93.4		0.339	3.5	2.2

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	FOURIER SYNTHESIS	THROUGHOUT	PDB entry 1QJV	1.9	44.37	56446	3008	89.38	0.18712	0.18591	0.2099	RANDOM	17.391

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]
-0.55		0.09	0.41		0.15

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.859
r_dihedral_angle_4_deg	16.698
r_dihedral_angle_3_deg	12.982
r_dihedral_angle_1_deg	5.879
r_scangle_it	1.987
r_scbond_it	1.308
r_angle_refined_deg	1.074
r_mcangle_it	0.925
r_mcbond_it	0.522
r_nbtor_refined	0.303
r_symmetry_vdw_refined	0.186
r_nbd_refined	0.181
r_symmetry_hbond_refined	0.153
r_xyhbond_nbd_refined	0.128
r_chiral_restr	0.076
r_bond_refined_d	0.008
r_gen_planes_refined	0.003
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5212
Nucleic Acid Atoms
Solvent Atoms	809
Heterogen Atoms	154

Software

Software
Software Name	Purpose
REFMAC	refinement
ADSC	data collection
MOSFLM	data reduction
SCALA	data scaling
REFMAC	phasing