Chin Bull Bot ›› 2014, Vol. 49 ›› Issue (1): 49-62.doi: 10.3724/SP.J.1259.2014.00049

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Bioinformatics Analysis of the AT-hook Gene Family in Rice

Guiwei Zhang1†, Jue Zeng1†, Wei Guo1, Qiong Luo2*   

  1. 1College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China

    2College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
  • Received:2013-03-11 Revised:2013-06-01 Online:2014-01-01 Published:2014-01-01
  • Contact: Qiong Luo

Abstract: The AT-hook is a small motif in DNA-binding protein that was first described in the high-mobility-group non-histone chromosomal protein HMG-I/Y. AT-hook family proteins play an important role in chromatin structure assembly, specific binding to target cells, transcription regulation and development regulation in other organisms. We identified 45 AT-hook genes from the rice genome by bioinformatics, analyzed the gene structure and chromosomal distribution, and examined the phylogenetic relationships among rice AT-hook proteins, finally constructing an unrooted tree from alignment of their full-length protein sequences in rice and Arabidopsis. AT-hook proteins grouped into 5 distinct clades (A–E), with no differences in structure or characteristics. The family members were recruited by chromosome replication. Digital gene expression analysis revealed that AT-hook genes mainly express in young panicles. We verified some of the gene expression by qRT-PCR.

CLC Number: 

  • Q786

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