Accumulation and specific cleavage of 5S RNA in the isthmus of laying hen oviduct. Evidence for three chicken 5S RNA.
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.
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*
D012335:RNA, Ribosomal