Autoinhibition of ubiquitin-specific protease 8: insights into domain interactions and mechanisms of regulation

Caba C, Black M, Liu Y, DaDalt A, Mallare J, Fan L, Harding R, Wang Y, Vacratsis P, Huang R, Zhuang Z, Tong Y, Journal of Biological Chemistry :107727 (2024) DOI

SASDU39 – Nearly full-length monomeric Human Ubiquitin carboxyl-terminal hydrolase 8 (USP8) (7-1110)

Ubiquitin carboxyl-terminal hydrolase 8
MWexperimental 128 kDa
MWexpected 127 kDa
VPorod 327 nm3
log I(s) 1.60×10-2 1.60×10-3 1.60×10-4 1.60×10-5
Ubiquitin carboxyl-terminal hydrolase 8 small angle scattering data  s, nm-1
ln I(s)
Ubiquitin carboxyl-terminal hydrolase 8 Guinier plot ln 1.60×10-2 Rg: 8.4 nm 0 (8.4 nm)-2 s2
(sRg)2I(s)/I(0)
Ubiquitin carboxyl-terminal hydrolase 8 Kratky plot 1.104 0 3 sRg
p(r)
Ubiquitin carboxyl-terminal hydrolase 8 pair distance distribution function Rg: 8.8 nm 0 Dmax: 31.8 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Ubiquitin carboxyl-terminal hydrolase 8 DAMMIF model

Synchrotron SAXS data from solutions of Nearly full-length monomeric Human Ubiquitin carboxyl-terminal hydrolase 8 (USP8) (7-1110) in 25 mM Tris, 150 mM NaCl, pH 7.5 were collected on the BioCAT 18ID beam line at the Advanced Photon Source (APS), Argonne National Laboratory storage ring (Lemont, IL, USA) using a Eiger2 XE 9M detector at a sample-detector distance of 3.6 m and at a wavelength of λ = 0.1033 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). In-line size-exclusion chromatography (SEC) SAS was employed. The SEC parameters were as follows: A 350.00 μl sample at 2 mg/ml was injected at a 0.60 ml/min flow rate onto a GE Superdex 200 Increase 10/300 column at 22°C. Nine successive 0.500 second frames were collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

Ubiquitin carboxyl-terminal hydrolase 8 (USP8)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   127.2 kDa
 
UniProt   P40818 (7-1110)
Sequence   FASTA