FAM105B Activators

Chemicals classified as FAM105B Activators can indirectly influence the activity of the FAM105B protein, known as OTULIN, by modulating the NF-κB signaling pathway. These compounds include a diverse range of structures and classes, including flavonoids, polyphenols, alkaloids, and lactones, among others. The primary action of these chemicals is on the NF-κB pathway, a key cellular pathway involved in inflammation and immune response. By suppressing or inhibiting the activation of NF-κB, these chemicals can indirectly affect the activity of OTULIN. OTULIN is a deubiquitinase that specifically cleaves linear (Met1-linked) polyubiquitin chains, which modulates NF-κB signaling. Therefore, any modulation of the NF-κB pathway can indirectly influence the activity of OTULIN.

Among the selected chemicals, some, such as BAY 11-7082 and parthenolide, act by inhibiting IκBα phosphorylation or IκBα kinase, respectively. Both of these actions prevent the activation and nuclear translocation of NF-κB, thereby indirectly modulating OTULIN's deubiquitinating activity. Other compounds, such as curcumin, sulforaphane, and resveratrol, have antioxidant and anti-inflammatory properties. These compounds suppress the NF-κB pathway, which can indirectly modulate the activity of OTULIN. Similarly, emodin, epigallocatechin gallate, quercetin, piperlongumine, celastrol, withaferin A, and berberine also suppress NF-κB activation, thereby potentially influencing OTULIN's activity. Thus, the chemicals classified as FAM105B Activators generally work by modulating the NF-κB pathway, which indirectly affects the activity of OTULIN.