There are four imperfect repeats v - v - e - k - k - n / e - e of which the core sequence is similar to map ib of mouse . rna blot and rt - pcr analysis showed that this gene is expressed specifically in the mature pollen and can be classified as a late gene in pollen development 计算机软件分析st901基因核苷酸、氨基酸序列的相似性，结果表明， st901基因编码区与探针sb401 、与高赖氨酸基因sblr 、与番茄tsb具有较高的相似性，它们可能来源于马铃薯的一个基因家族。
