摘要： 基因的染色体定位对我们研究基因相互关系、基因的组织与进化及理解基因与疾病关系具有重要的意义。本文采用RH-PCR方法及生物信息学方法对PP3898、PP1158、PP753、SP260、HC56等5条人细胞生长相关新基因进行染色体定位，并分析了其基因结构。PP3898及PP1158定位于19p13.3,PP753及SP260定位于1q21.1,HC56定位于17p13.3。PP3898含有19个外显子和18个内含子，可读框为2565bp；PP1158含有7个外显子和6个内含子，可读框为1218bp；SP260含有10个外显子和9个内含子，可读框为690bp；HC56为单外显子,可读框为3141bp。另外，对染色体定位获得的信息进行了分析。
Abstract:Five novel human genes related to cell growth control were newly isolated and identified by high-throughput functional screening.In this paper,the chromosomal localization of these five genes is reported.Radiation hybrid mapping and in silico mapping,and their genomic organization were analyzed respectively.PP3898 and PP1158 were assigned to chromosome 19p13.3,SP260 and PP753 to chromosome 1q21.1,and HC56 to chromosome 17p13.3.PP3898 contains nineteen exons and eighteen introns,PP1158 seven exons and six introns,SP260 ten exons and nine introns,and HC56 only one exon.The implications of chromosomal localization are discussed.