Ubiquitin +1 (Ub+1) is a novel mutant form of ubiquitin that can be produced through a process known as molecular frameshift. Ub+1 can be polyubiquitinated to produce aberrant polyubiquitin chains that inhibit the 26S proteasome. Especially Ub+1 is accumulated in aggregates containing amyloid beta and phosphorylated tau. Elevated expression of Ub+1 mRNA and protein has been observed in the brains of patients with Alzheimer's disease. Also Ub+1 acts as an aggravating factor in polyglutamine induced neurodegeneration.
Cytoplasmic and Nuclear
SDS-PAGE - Ubiquitin +1 protein (Tagged) (ab82625)
ab82625 at 1µg on SDS-PAGE.
has not yet been referenced specifically in any publications.