Repeat sequence families derived from mammalian tRNA genes
Repeat sequence families derived from mammalian tRNA genes
复制标题
源自哺乳动物 tRNA 基因的重复序列家族
作者:
G. R. Daniels;P. Deininger
Short interspersed repetitive DNA sequences (SINEs) are the major component of dispersed repetitive DNA in all mammalian genomes (see refs 1–6 for reviews). Most SINEs contain an intragenic RNA polymerase III promoter that initiates transcription at the 5′ end of the repeated DNA sequence7–9 and which has been proposed to facilitate the transposition and amplification of these sequences by an RNA-intermediate mechanism10,11. We have discovered several SINE families in the prosimian Galago crassicaudatus which have promoter regions similar to transfer RNA genes12,13. To determine the relationship between Galago SINEs and mammalian tRNA genes, we have compared their sequences. Here, we demonstrate that the Galago monomer and type II SINE families12 are 68 and 62% homologous, respectively, with a human methionine tRNA gene14. We have extended our analysis to include the rat identifier15 and mouse B2 (ref. 16) families and show that their sequences are closely related to alanine and serine tRNA genes, respectively. Our observations suggest that many mammalian SINE families are amplified tRNA pseudogenes.
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影响因子:
2.9
作者:
Rinehart,FP;Ritch,TG;Deininger,PL;Schmid,CW
通讯作者:
Schmid,CW
影响因子:
5.6
作者:
DEININGER, PL;JOLLY, DJ;SCHMID, CW
通讯作者:
SCHMID, CW
影响因子:
3.5
作者:
Duncan,CH;Jagadeeswaran,P;Wang,RR;Weissman,SM
通讯作者:
Weissman,SM
影响因子:
14.9
作者:
Daniels,GR;Fox,GM;Loewensteiner,D;Schmid,CW;Deininger,PL
通讯作者:
Deininger,PL
DOI:
10.1073/pnas.81.3.713
发表时间:
1984-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
MILNER, RJ;BLOOM, FE;SUTCLIFFE, JG
通讯作者:
SUTCLIFFE, JG