POLYMERIC IMMUNOGLOBULIN RECEPTOR
\pˌɒlɪmˈɛɹɪk ɪmjˈuːnəɡlˌɒbjʊlˌɪn ɹɪsˈɛptə], \pˌɒlɪmˈɛɹɪk ɪmjˈuːnəɡlˌɒbjʊlˌɪn ɹɪsˈɛptə], \p_ˌɒ_l_ɪ_m_ˈɛ_ɹ_ɪ_k ɪ_m_j_ˈuː_n_ə_ɡ_l_ˌɒ_b_j_ʊ_l_ˌɪ_n ɹ_ɪ_s_ˈɛ_p_t_ə]\
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Specialized Fc receptors (RECEPTORS, FC) for polymeric immunoglobulins, which mediate transcytosis of polymeric IMMUNOGLOBULIN A and IMMUNOGLOBULIN M into external secretions. They are found on the surfaces of epithelial cells and hepatocytes. After binding to IMMUNOGLOBULIN A, the receptor-ligand complex undergoes endocytosis, transport by vesicle, and secretion into the lumen by exocytosis. Before release, the part of the receptor (SECRETORY COMPONENT) that is bound to IMMUNOGLOBULIN A is proteolytically cleaved from its transmembrane tail. (From Rosen et al., The Dictionary of Immunology, 1989)
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Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.
Nearby Words
- polymerase chain reactions
- polymeria
- polymeric
- polymeric amide
- polymeric ig receptor
- Polymeric Immunoglobulin Receptor
- polymeric immunoglobulin receptors
- polymerid
- polymerisation
- polymerise
- polymerism