Roberts D B, Evans-Roberts S
Genetics. 1979 Nov;93(3):663-79. doi: 10.1093/genetics/93.3.663.
The alpha, beta and gamma polypeptides that make up Drosophila Larval Serum Protein-1 seem to be coded for by genes that have evolved by duplication of a common ancestral gene. We have found variants of all three polypeptides, and these are variants of the coding sequences. The alpha-chain variant mapped to 39.5 on the X chromosome and to the polytene interval 11A7-11B9. The beta-chain variant mapped to 1.9 on chromosome 2L and to 21D2-22A1. The gamma-chain variant was mapped as 0.13 map units from the tip of chromosome 3L or to --1.41 with respect to ru, which has been defined as 0.0, and to 61A1-61A6.
构成果蝇幼虫血清蛋白-1的α、β和γ多肽似乎由通过共同祖先基因复制而进化的基因编码。我们发现了所有三种多肽的变体,并且这些是编码序列的变体。α链变体定位于X染色体上的39.5以及多线区间11A7 - 11B9。β链变体定位于2L染色体上的1.9以及21D2 - 22A1。γ链变体相对于ru(已定义为0.0)被定位在距离3L染色体末端0.13个图距单位处或 - 1.41处,并且定位于61A1 - 61A6。