Experiment: 2RJH

Crystal structure of biosynthetic alaine racemase in D-cycloserine-bound form from Escherichia coli

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1RCQ	PDB ENTRY 1RCQ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	277	0.1M HEPES, 1.6M ammonium sulfate, pH7.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.11	60.48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 147.713	α = 90
b = 147.713	β = 90
c = 163.724	γ = 120

Symmetry
Space Group	P 6

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV++		2006-11-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.4	164.399	99.9	0.121	0.121	6	9.7		78993

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.4	2.53	99.7		0.395	0.395	1.9	7.7	11495

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1RCQ	2.4	15	31	78640	7605	99.9	0.199	0.228	0.1951	20.374

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]
-2.246	-3.529		-2.246		4.492

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	2.574
c_mcangle_it	1.819
c_scbond_it	1.742
c_mcbond_it	1.108

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10949
Nucleic Acid Atoms
Solvent Atoms	566
Heterogen Atoms	118

Software

Software
Software Name	Purpose
SCALA	data processing
CNS	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection
MOSFLM	data reduction
SCALA	data scaling