1UI6

Crystal structure of gamma-butyrolactone receptor (ArpA-like protein)

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1UI5	PDB ENTRY 1UI5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	293	PEG 6000, lithium sulfate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.27	45.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.792	α = 90
b = 69.562	β = 90
c = 148.933	γ = 90

Symmetry
Space Group	P 21 21 21

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		2001-05-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-6A	1.0	Photon Factory	BL-6A

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	30	92.8	0.047	0.047	9	4.4	31849	31849			31.5

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)
1	2	2.11	91.6		0.205	0.205	3.4	3.4	3591

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1UI5	2.4	30	15231	13950	751	91.59	0.22787	0.22787	0.22493	0.28401	RANDOM	21.86

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]
2.08			-0.68		-1.4

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	20.09
r_scangle_it	4.705
r_dihedral_angle_1_deg	3.264
r_scbond_it	2.694
r_mcangle_it	1.668
r_angle_refined_deg	1.573
r_mcbond_it	0.874
r_angle_other_deg	0.818
r_symmetry_hbond_refined	0.297
r_symmetry_vdw_refined	0.278
r_nbd_refined	0.26
r_nbd_other	0.219
r_symmetry_vdw_other	0.196
r_xyhbond_nbd_refined	0.173
r_chiral_restr	0.085
r_bond_refined_d	0.017
r_gen_planes_refined	0.006
r_gen_planes_other	0.002
r_xyhbond_nbd_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3025
Nucleic Acid Atoms
Solvent Atoms	57
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
AMoRE	phasing