4HBN

Crystal structure of the human HCN4 channel C-terminus carrying the S672R mutation

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.2	277	1.6 M KH2PO4/Na2HPO4 and 0.1 M Phosphate-Citrate, pH 4.2, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.73	54.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 95.467	α = 90
b = 95.467	β = 90
c = 115.99	γ = 90

Symmetry
Space Group	I 4 2 2

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++		2010-12-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	1.54

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	2.6	50	99.1			55982	8484	3	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	2.6	2.69	100		0.232	7.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	2.6	50	8484	7972	400	97.68	0.25941	0.25746	0.29669	RANDOM	48.092

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]
-1.85			-1.85		3.69

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.072
r_dihedral_angle_4_deg	23.661
r_dihedral_angle_3_deg	20.028
r_dihedral_angle_1_deg	6.488
r_scangle_it	4.491
r_scbond_it	2.848
r_mcangle_it	1.9
r_angle_refined_deg	1.238
r_mcbond_it	1.017
r_chiral_restr	0.083

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.072
r_dihedral_angle_4_deg	23.661
r_dihedral_angle_3_deg	20.028
r_dihedral_angle_1_deg	6.488
r_scangle_it	4.491
r_scbond_it	2.848
r_mcangle_it	1.9
r_angle_refined_deg	1.238
r_mcbond_it	1.017
r_chiral_restr	0.083
r_gen_planes_refined	0.009
r_bond_refined_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1605
Nucleic Acid Atoms
Solvent Atoms	60
Heterogen Atoms	27

Software

Software
Software Name	Purpose
MAR345dtb	data collection
PHASES	phasing
REFMAC	refinement
d*TREK	data reduction
d*TREK	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.