Shaw P A, Barka T
Department of Anatomy, Mount Sinai School of Medicine, New York, NY 10029.
Biochem J. 1989 Feb 1;257(3):685-9. doi: 10.1042/bj2570685.
Transcripts encoding the cysteine-proteinase inhibitor rat cystatin S are induced in submandibular and parotid glands by the beta-adrenergic agonist isoproterenol (isoprenaline). High levels of cystatin S mRNA persist in glands of chronically treated animals for 6 days after discontinuation of the catecholamine, indicating a long half-life of the mRNA. Post-transcriptionally the size of the mRNA decreases, owing to a shortening of the poly(A) tail.
编码半胱氨酸蛋白酶抑制剂大鼠胱抑素S的转录本,在颌下腺和腮腺中被β-肾上腺素能激动剂异丙肾上腺素(喘息定)诱导产生。在停用儿茶酚胺后,慢性处理动物的腺体中高水平的胱抑素S mRNA持续存在6天,这表明该mRNA具有较长的半衰期。转录后,由于多聚腺苷酸尾的缩短,mRNA的大小减小。