Rook F, Weisbeek P, Smeekens S
Department of Molecular Cell Biology, University of Utrecht, The Netherlands.
Plant Mol Biol. 1998 May;37(1):171-8. doi: 10.1023/a:1005964327725.
A light-regulated basic domain/leucine zipper gene, ATB2, was identified in an Arabidopsis thaliana transcription factor gene collection. Both genomic and cDNA clones of ATB2 were isolated. The gene encodes a small protein (18 kDa) which mainly consists of the basic domain and an unusually long leucine zipper. The expression of the ATB2 gene is induced when etiolated or dark-adapted seedlings are transferred to the light. Moreover, its expression is derepressed in dark-grown seedlings of the photomorphogenic mutants cop1 and det1. In mature plants, transcript levels are particularly high in flowers and also light-responsive in these tissues.
在拟南芥转录因子基因文库中鉴定出一个光调控的碱性结构域/亮氨酸拉链基因ATB2。分离得到了ATB2的基因组克隆和cDNA克隆。该基因编码一个小蛋白（18 kDa），主要由碱性结构域和一个异常长的亮氨酸拉链组成。当黄化或暗适应的幼苗转移到光照下时，ATB2基因的表达被诱导。此外，在光形态建成突变体cop1和det1的黑暗生长幼苗中，其表达被解除抑制。在成熟植株中，转录水平在花中特别高，并且在这些组织中对光也有响应。
