Velissariou V, Ashburner M
Chromosoma. 1980;77(1):13-27. doi: 10.1007/BF00292038.
The gene for a major salivary gland secretion protein (Sgs-1) in Drosophila melanogaster has been mapped to chromosome 2 between dp (13.0) and cl (16.5). In the late third instar larva, a puff forms in this region. This puff (25 B) regresses as the ecdysteroid concentration increases prior to puparium formation. Quantitative analysis of the secretory protein 1, showed that, when present in extra dose, region 25 B results in a significant elevation in its relative amount. This suggests that the structural gene for this protein is localized in this region and that its synthesis is directly correlated to the activity of the 25 B puff.
黑腹果蝇中一种主要唾液腺分泌蛋白（Sgs-1）的基因已被定位到2号染色体上dp（13.0）和cl（16.5）之间的区域。在三龄幼虫后期，该区域会形成一个胀泡。在化蛹前随着蜕皮甾类浓度升高，这个胀泡（25B）会消退。对分泌蛋白1的定量分析表明，当额外增加剂量时，25B区域会使其相对含量显著升高。这表明该蛋白的结构基因位于这个区域，并且其合成与25B胀泡的活性直接相关。
