VDJ recombination of B lymphocytes needs palindromic sequences . In addition stem-loop structure is involved in viral transcription , replication and other biological processes .
非编码序列的DNA结构在基因表达调节中起重要作用，B淋巴细胞的VDJ重组需要回文序列，回文序列涉及病毒转录、复制等多种生物学过程。
VDJ