title: Accumulation and specific cleavage of 5S RNA in the isthmus of laying hen oviduct. Evidence for three chicken 5S RNA.
abstract: RNA extracts from the isthmus of laying hen oviduct contain truncated 5S RNA molecules that were found to be shorter at their 5' terminus as compared to native 5S RNA I and II. Moreover one of the truncated species differs from 5S RNA I by the absence of the 3' end nucleotide. The truncated forms increase of about 70% the total 5S RNA (intact + truncated) in the isthmus, as compared to the other studied tissues. Furthermore 5S RNA I is heterogeneous: 25% have A instead of U at the 3' end, and some evidence was obtained for the existence of two 5S RNA I conformers.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002645:Chickens / Q000235:genetics*; D005260:Female; D008970:Molecular Weight; D010057:Oviducts / Q000033:anatomy & histology / Q000378:metabolism*; D010060:Ovulation; D012335:RNA, Ribosomal / Q000378:metabolism*
chemical_list: D012335:RNA, Ribosomal