Arrestin beta 2 zülal ailəsinin üzvlərinin G zülalı ilə əlaqəli reseptorların agonist vasitəçiliyi ilə desensitizasiyasında iştirak etdiyi və hormonlar, neyrotransmitterlər və ya duyğu siqnalları kimi stimullara hüceyrə reaksiyalarının spesifik şəkildə yatırılmasına səbəb olduğu düşünülür.[5][6][7] Arrestin beta 2 zülalı həmçinin müstəqil siqnal roluna malikdir.[8][9][10][11][12]
Arrestin beta 2, arrestin beta 1 kimi, beta-adrenergik reseptor funksiyasını in vitro inhibe edir. Mərkəzi sinir sistemində yüksək səviyyədə ifadə edilir və sinoptik reseptorların tənzimlənməsində rol oynaya bilər.
Beyinlə yanaşı, arrestin beta 2 üçün tamamlayıcı DNT[13]qalxanabənzər vəzindən təcrid edilmişdir və beləliklə, o, tirotropin reseptorlarının hormon-spesifik desensitizasiyasında da iştirak edə bilər. Bu gen üçün bir çox alternativ olaraq birləşdirilmiş transkript variantları tapılmışdır, lakin bəzi variantların tam aydın təbiəti müəyyən edilməmişdir.[13]
Zülal 5-HT2A reseptor[14] siqnalında agonist DOI[15] ilə qarşılıqlı əlaqədə ola bilər.[16][17]
Arrestin beta 2 morfin və digər opioidlərə[18] qarşı dözümlülüyün inkişafı üçün vacibdir.
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↑Wang P, Gao H, Ni Y, Wang B, Wu Y, Ji L, Qin L, Ma L, Pei G. "Beta-arrestin 2 functions as a G-protein-coupled receptor-activated regulator of oncoprotein Mdm2". The Journal of Biological Chemistry. 278 (8). February 2003: 6363–70. doi:10.1074/jbc.M210350200. PMID12488444.
↑Wang P, Wu Y, Ge X, Ma L, Pei G. "Subcellular localization of beta-arrestins is determined by their intact N domain and the nuclear export signal at the C terminus". The Journal of Biological Chemistry. 278 (13). March 2003: 11648–53. doi:10.1074/jbc.M208109200. PMID12538596.
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