6EC0

Crystal structure of the wild-type heterocomplex between coil 1B domains of human intermediate filament proteins keratin 1 (KRT1) and keratin 10 (KRT10)

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	APS BEAMLINE 24-ID-C
Synchrotron site	APS
Beamline	24-ID-C
Temperature [K]	100
Detector technology	PIXEL
Collection date	2017-07-06
Detector	DECTRIS PILATUS 6M-F
Wavelength(s)	0.9795
Spacegroup name	P 31 2 1
Unit cell lengths	106.685, 106.685, 70.321
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	46.196 - 2.983
R-factor	0.2822
Rwork	0.281
R-free	0.30010
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	Phase problem initially solved using SAD on an isomorphous crystal whose data was collected at the cadmium edge (8500eV). This structure was used as starting model in MolRep to obtain the higher resolution KRT1/KRT10 1B structure.
RMSD bond length	0.006
RMSD bond angle	0.896
Data reduction software	HKL-2000
Data scaling software	HKL-2000
Phasing software	MOLREP
Refinement software	PHENIX

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	50.000	50.000	3.050
High resolution limit [Å]	2.983	8.130	2.983
Rmerge	0.132	0.050	1.185
Rmeas	0.141	0.053	1.285
Rpim	0.047	0.017	0.477
Number of reflections	8681	536	206
<I/σ(I)>	4.3
Completeness [%]	89.6	100	42.7
Redundancy	8	8.8	5
CC(1/2)		0.999	0.640

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP	7.5	298	11% PEG 3350, 0.1 M HEPES, 5 mM cobalt chloride, 5 mM cadmium chloride, 5 mM magnesium chloride, 5 mM nickel chloride