A DNA Sequence Compression Algorithm Based on LUT and LZ77
  This article introduces a new DNA sequence compression algorithm which is based on LUT and LZ77 algorithm. Combined a LUT-based pre-coding routine and LZ77 compression routine,this algorithm can approach a compression ratio of 1.9bits \slash base and even lower.The biggest advantage of this algorithm is fast execution, small memory occupation and easy implementation. 
Sheng Bao, Shi Chen, Zhiqiang Jing, Ran Ren