Experiment: 2Q3N

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1ABR	Abrin-a (PDB code: 1ABR)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	PEG 8000, TRIS-HCL BUFFER, PH 8.5, , VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
4.45	72.33

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 141.122	α = 90
b = 141.122	β = 90
c = 105.253	γ = 90

Symmetry
Space Group	P 42 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	CCD	MARRESEARCH		2005-02-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X9A	0.978	NSLS	X9A

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	3.5	29.31	95.7	0.095	13.1	3.8		11360	2	1

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	3.5	3.7	96.8		0.539	2.3	3.8

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	Abrin-a (PDB code: 1ABR)	3.5	29.31	10246	1115	100	0.20079	0.19481	0.25547	RANDOM	51.741

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
r_dihedral_angle_2_deg	40.285
r_dihedral_angle_3_deg	22.527
r_dihedral_angle_4_deg	19.125
r_dihedral_angle_1_deg	9.471
r_angle_refined_deg	1.725
r_scangle_it	1.387
r_scbond_it	0.798
r_mcangle_it	0.523
r_nbtor_refined	0.326
r_symmetry_vdw_refined	0.31

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.285
r_dihedral_angle_3_deg	22.527
r_dihedral_angle_4_deg	19.125
r_dihedral_angle_1_deg	9.471
r_angle_refined_deg	1.725
r_scangle_it	1.387
r_scbond_it	0.798
r_mcangle_it	0.523
r_nbtor_refined	0.326
r_symmetry_vdw_refined	0.31
r_mcbond_it	0.282
r_symmetry_hbond_refined	0.276
r_nbd_refined	0.266
r_xyhbond_nbd_refined	0.164
r_chiral_restr	0.127
r_bond_refined_d	0.013
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3983
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	45

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.