A small family of nodule specific genes from soybean.
A small family of nodule specific genes from soybean.
复制标题
大豆根瘤特异性基因的一个小家族。
作者：
N. Sandal;K. Bojsen;K. Marcker
介绍了两个大豆根瘤特异性基因的初级结构。这两个基因编码的初级产物分别为20.0（结节素20）和22.7（结节素22）千道尔顿。这两个基因都与结节素23和结节素44基因有关。对所有四个基因的氨基酸序列进行比对发现，由于大量的重复和插入事件，三个高度同源的区域被高度分化的区域打断。第一个保守结构域编码一种假定的信号肽，而另外两个各包含四个Cys残基，它们的排列方式与某些酶和几种DNA结合蛋白中存在的金属结合结构域类似。
The primary structure of two nodule specific soybean genes are presented. The two genes code for primary products of 20.0 (nodulin 20) and 22.7 (nodulin 22) kdaltons, respectively. Both genes are related to the nodulin 23 and 44 genes. Alignment of the deduced amino acid sequences of all four genes revealed three domains of high homology interrupted by highly diverged regions due to numerous duplication and insertion events. The first conserved domain codes for a putative signal peptide, while the two others each contain four Cys residues that can be arranged in a way reminiscent of the metal binding domains present in some enzymes and in several DNA binding proteins.