3L4B

Crystal Structure of an Octomeric Two-Subunit TrkA K+ Channel Ring Gating Assembly, TM1088A:TM1088B, from Thermotoga maritima

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	0.1 M Magnesium Chloride, 15% PEG 4000, 0.1M HEPES, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.57	52.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 96.778	α = 90
b = 96.778	β = 90
c = 305.098	γ = 120

Symmetry
Space Group	P 32 2 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 315r		2007-05-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.3	1.0	ALS	5.0.3

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	3.45	48.39	99.9			22866	22866

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.45	3.57	100

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	MAD	THROUGHOUT	2G1U	3.45	48.39	21497	21497	1164	99.91	0.26134	0.26134	0.25893	0.30827	RANDOM	41.705

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]
0.59	0.3		0.59		-0.89

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.577
r_dihedral_angle_3_deg	19.329
r_dihedral_angle_4_deg	15.693
r_scangle_it	4.513
r_dihedral_angle_1_deg	4.358
r_scbond_it	2.696
r_mcangle_it	1.192
r_angle_refined_deg	0.966
r_mcbond_it	0.537
r_chiral_restr	0.065

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.577
r_dihedral_angle_3_deg	19.329
r_dihedral_angle_4_deg	15.693
r_scangle_it	4.513
r_dihedral_angle_1_deg	4.358
r_scbond_it	2.696
r_mcangle_it	1.192
r_angle_refined_deg	0.966
r_mcbond_it	0.537
r_chiral_restr	0.065
r_bond_refined_d	0.006
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8952
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	93

Software

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

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.