作者: Jennifer L. Mitcham , Patricia Parnet , Timothy P. Bonnert , Kirsten E. Garka , Mary J. Gerhart
关键词: Genetics 、 Peptide sequence 、 Interleukin-1 Receptor-Like 1 Protein 、 Homology (biology) 、 Protein superfamily 、 Signal transduction 、 Consensus sequence 、 Interleukin-1 receptor family 、 Membrane protein 、 Biology
摘要: Through data base searches, we have discovered new proteins that share homology with the signaling domain of type I interleukin-1 receptor (IL-1RI): human "randomly sequenced cDNA 786" (rsc786), murine MyD88, and two partial Drosophila open reading frames, MstProx STSDm2245. Comparisons between these known IL-1RI homologous such as Toll, 18-Wheeler, T1/ST2 revealed six clusters amino acid similarity. We tested hypothesis sequence similarity three mammalian family members might indicate functional Chimeric receptors expressing putative domains T1/ST2, rsc786 were assayed by separate IL-1 responsive assays, NF-kappaB, phosphorylation an epidermal growth factor peptide, interleukin 8 promoter-controlled reporter construct, for their ability to transduce IL-1-stimulated signal. All assays positive in response chimera, while MyD88 chimeras failed respond. These indicates a well.