Target intelligence / Profile preview

Translocon-associated protein subunit beta (SSR2)

Target
SSR2
Molecular classification
Receptor (specifically, endoplasmic reticulum membrane receptor), Component of the TRAP complex, Component of the translocon complex
01

Overview

Translocon-associated protein subunit beta (SSR2, also known as TRAP-beta) is a glycosylated, integral membrane protein that forms part of the signal sequence receptor (SSR) complex in the endoplasmic reticulum membrane. The SSR complex, composed of alpha-SSR (SSR1) and beta-SSR (SSR2), is involved in the co-translational translocation of nascent secretory and membrane proteins into the ER. In this process, SSR2 helps form a receptor for signal sequence-bearing proteins, aiding their passage through the Sec61 translocon channel into the ER lumen for subsequent folding and modification. While vital for appropriate protein secretion and maturation, current evidence suggests SSR2 is not a major independent drug target but rather a facilitator within the broader translocation machinery[5][6][7].

Other names
Signal sequence receptor subunit 2SSR2TRAP-betaTranslocon-associated protein subunit betaBeta-signal sequence receptor
02

Mechanism of action

Not established as a primary drug target, so no defined mechanisms of action for drugs are reported[7].

03

Biological functions

Protein translocation across the ER membraneProtein secretionSubstrate recognition in the ER import process
04

Disease associations

Other (currently, there is no strong evidence linking SSR2 to major disease categories like cancer, neurodegeneration, etc., but dysfunction in protein translocation and ER processing can potentially contribute to various disease states)
05

Safety considerations

No notable therapeutic challenges or safety concerns reported for modulating SSR2 specifically. However, perturbation in ER protein translocation can potentially affect cell viability and protein homeostasis[2].

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