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Expression of RBM in the Nuclei of Human Germ Cells is Dependent on a Critical Region of the Y Chromosome Long Arm
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Expression of RBM in the Nuclei of Human Germ Cells is Dependent on a Critical Region of the Y Chromosome Long Arm
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Expression of RBM in the Nuclei of Human Germ Cells is Dependent on a Critical Region of the Y Chromosome Long Arm
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Journal Article
Expression of RBM in the Nuclei of Human Germ Cells is Dependent on a Critical Region of the Y Chromosome Long Arm
1997
Overview
The association of abnormal spermatogenesis in men with Y chromosome deletions suggests that genes important for spermatogenesis have been removed from these individuals. Recently, genes encoding two putative RNA-binding proteins (RBM and DAZ/SPGY) have been mapped to two different regions of the human Y chromosome. Both of these genes encode proteins that contain a single RNA recognition motif and a (different) internally repeating sequence. Y-linked RBM homologues are found in all mammalian species. We have raised an antiserum to RBM and used it to show that RBM is a nuclear protein expressed in fetal, prepubertal, and adult male germ cells. The distribution of RBM protein in the adult correlates with the pattern of transcriptional activity in spermatogenesis, suggesting that RBM is involved in the nuclear metabolism of newly synthesized RNA. RBM sequences are found on both arms of the Y chromosome making genotype-phenotype correlations difficult for this gene family. To address the location of the functional genes and the consequences of their deletion, we examined a panel of men with Y chromosome deletions and known testicular pathologies using this antiserum. This approach enabled us to map a region of the Y chromosome essential for RBM expression. In the absence of detectable RBM expression we see stages of germ cell development up to early meiosis, but not past this point into the haploid phase of spermatogenesis.
Publisher
National Academy of Sciences of the United States of America,National Acad Sciences,National Academy of Sciences,The National Academy of Sciences of the USA
Subject
/ Genes
/ Genetics
/ Haploidy
/ Humans
/ Male
/ Proteins
/ RNA
/ RNA-Binding Proteins - biosynthesis
/ RNA-Binding Proteins - genetics
/ Testes
