The domain within your query sequence starts at position 6 and ends at position 127; the E-value for the USP8_dimer domain shown below is 2.5e-36.

SVPKELYLSSSLKDLNKKTEVKPEKTSTKNTKFCKFSSFLSYIHSAQKIFKTAEECRLDR
DEERAYVLYMKYVAVYNLIKKRPDFKQQQDYYLSILGPANIKKAIEEAERLSESLKLRYE
EA

USP8_dimer

USP8_dimer
PFAM accession number:PF08969
Interpro abstract (IPR015063):

This domain is found in the amino terminal region of Ubiquitin carboxyl-terminal hydrolase 8 (USP8). It forms a five helical bundle that dimerises [(PUBMED:17035239)]. It is also found in other proteins, including AMSH-like protease and STAM-binding protein.

This is a PFAM domain. For full annotation and more information, please see the PFAM entry USP8_dimer