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Genomics 2001 May 15;741:1-11. doi: 10.1006/geno.2001.6530.
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A novel poly(A)-binding protein gene (PABPC5) maps to an X-specific subinterval in the Xq21.3/Yp11.2 homology block of the human sex chromosomes.

Blanco P , Sargent CA , Boucher CA , Howell G , Ross M , Affara NA .

The gene-poor human-specific Xq21.3/Yp11.2 block of homology exhibits 99% nucleotide identity, with the exception of an internal X-specific region containing the marker DXS214. This paper describes the characterization of a novel gene (PABPC5) from this X-specific subinterval that belongs to the poly(A)-binding protein gene family. The genomic structure of PABPC5 covers 4061 bp of an uninterrupted open reading frame (ORF) and a 5'UTR spanning across two exons and associated with a CpG island; the potential 382-amino-acid protein contains four RNA recognition motif domains. PABPC5 has 73% nucleotide identity with PABPC4 over 1801 bp of the ORF. At the protein level, 60% identity and 75% similarity are obtained in the comparison with human PABPC4, as well as human, mouse, and Xenopus PABPC1. RT-PCR indicates that PABPC5 is expressed in fetal brain and in a range of adult tissues. Conservation of the PABPC5 ORF and genomic structure is shown in primates and rodents. The close proximity of this gene to translocation breakpoints associated with premature ovarian failure makes it a potential candidate for this condition.

PubMed ID: 11374897
Article link: Genomics

Species referenced: Xenopus
Genes referenced: pabpc1 pabpc4