Experiment: 1R3N

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		model of seleno-methionine substituted beta-alanine synthase from the same source

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	293	trisodium citrate, dioxane, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.82

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 117.23	α = 90
b = 77.12	β = 95.05
c = 225.52	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 4	diamond monochromator and bent multilayer	2001-12-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1	0.933	ESRF	ID14-1

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	2.7	25	95.9	0.083	14.8	3.5		106190			54.6

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)
	2.7	2.85	82.2		0.261	3.7	2.6	13170

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	model of seleno-methionine substituted beta-alanine synthase from the same source	2.7	25	100879	100879	5296	95.84	0.21118	0.20837	0.26577	RANDOM	16.339

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]
1.21		2.2	-2.46		1.63

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.301
r_scangle_it	1.621
r_angle_refined_deg	1.189
r_scbond_it	0.97
r_mcangle_it	0.447
r_symmetry_vdw_refined	0.222
r_symmetry_hbond_refined	0.218
r_nbd_refined	0.205
r_mcbond_it	0.185
r_xyhbond_nbd_refined	0.164

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.301
r_scangle_it	1.621
r_angle_refined_deg	1.189
r_scbond_it	0.97
r_mcangle_it	0.447
r_symmetry_vdw_refined	0.222
r_symmetry_hbond_refined	0.218
r_nbd_refined	0.205
r_mcbond_it	0.185
r_xyhbond_nbd_refined	0.164
r_chiral_restr	0.089
r_bond_refined_d	0.009
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	26906
Nucleic Acid Atoms
Solvent Atoms	519
Heterogen Atoms	72

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
EPMR	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.