Liao C, Rovira C, Edström J E
J Mol Evol. 1994 Jul;39(1):112-4. doi: 10.1007/BF00178257.
Centromeres in dipteran insects belonging to the subgenus Camptochironomus (C. tentans and C. pallidivittatus) contain tandem repeats of a 155-bp repeat. A special structural feature of the 155-bp unit is a region with two palindromes connected by a short piece of DNA with only AT base pairs, which has at least a superficial similarity to a functionally important part of the Saccharomyces cerevisiae centromere. As a parameter for functional importance we have measured frequencies of mutations along the unit in samples of repeats from the two species. We find that it consists of about equal parts of highly conserved and considerably less-conserved DNA. The palindromes are localized in the conserved part of the repeat.
属于Camptochironomus亚属（C. tentans和C. pallidivittatus）的双翅目昆虫的着丝粒含有一个155碱基对重复序列的串联重复。155碱基对单元的一个特殊结构特征是一个区域，该区域有两个回文序列，由一段仅含AT碱基对的短DNA片段连接，这与酿酒酵母着丝粒的一个功能重要部分至少有表面上的相似性。作为功能重要性的一个参数，我们测量了来自这两个物种的重复序列样本中该单元沿序列的突变频率。我们发现它由高度保守和保守程度低得多的DNA大致相等的部分组成。回文序列位于重复序列的保守部分。
