Analysis of repetitive sequence elements containing tRNA-like sequences.
Analysis of repetitive sequence elements containing tRNA-like sequences.
复制标题
包含 tRNA 样序列的重复序列元件的分析。
作者：
C. Lawrence;D. McDonnell;W. Ramsey
来自不同物种的几个重复序列元件与tRNA分子具有广泛的序列同源性。对这些元件中的tRNA样序列的分析表明，它们起源于真实的tRNA序列。含有tRNA样序列的元件可以分为三个不同的组，其成员具有广泛的序列同源性，具有相似的序列组织，并具有独特的物种分布。我们认为，这三组代表了独立的例子，逆转录酶家族起源于tRNA。
Several repetitive sequence elements from diverse species share extensive sequence homology with tRNA molecules. Analysis of the tRNA-like sequences within these elements suggest that they have originated from authentic tRNA sequences. Elements containing tRNA-like sequences can be divided into three distinct groups whose members share extensive sequence homology, have similar sequence organization and have unique species distribution. We suggest that these three groups represent independent examples of retroposon families that have originated from tRNAs.