Experiment: 1X8Z

Crystal structure of a pectin methylesterase inhibitor from Arabidopsis thaliana

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1RJ1	p(ALA) version of PDB entry 1RJ1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.2	298	10%(v/v) PEG 8000, 0.3M NaCl, 0.1M Na/K Pi, pH 6.2, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
3.05	60

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.77	α = 90
b = 106.19	β = 90
c = 186.2	γ = 90

Symmetry
Space Group	I 2 2 2

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	Dynamically bendable mirror	2003-11-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA	1.0	SLS	X06SA

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	2.86	29.06	98.4	0.059	16.91	3.5	14136	14136	-3	-3

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)
	2.86	3.04	98.1		0.274	5.4	3.6	2307

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	THROUGHOUT	p(ALA) version of PDB entry 1RJ1	2.86	29.06	14129	13424	705	98.5	0.22	0.22	0.218	0.2178	0.28	0.2807	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]

RMS Deviations
Key	Refinement Restraint Deviation
c_angle_deg	1.2
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3360
Nucleic Acid Atoms
Solvent Atoms	22
Heterogen Atoms

Software

Software
Software Name	Purpose
XDS	data scaling
XDS	data reduction
EPMR	phasing
CNS	refinement