Caenorhabditis elegans prom-1 is required for meiotic prophase progression and homologous chromosome pairing

Verena Jantsch, Lois Tang, Pawel Pasierbek, Alexandra Penkner, Sudhir Nayak, Antoine Baudrimont, Tim Schedl, Anton Gartner, Josef Loidl

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

A novel gene, prom-1, was isolated in a screen for Caenorhabditis elegans mutants with increased apoptosis in the germline. prom-1 encodes an F-box protein with limited homology to the putative human tumor suppressor FBXO47. Mutations in the prom-1 locus cause a strong reduction in bivalent formation, which results in increased embryonic lethality and a Him phenotype. Furthermore, retarded and asynchronous nuclear reorganization as well as reduced homologous synapsis occur during meiotic prophase. Accumulation of recombination protein RAD-51 in meiotic nuclei suggests disturbed repair of double-stranded DNA breaks. Nuclei in prom-1 mutant gonads timely complete mitotic proliferation and premeiotic replication, but they undergo prolonged delay upon meiotic entry. We, therefore, propose that prom-1 regulates the timely progression through meiotic prophase I and that in its absence the recognition of homologous chromosomes is strongly impaired.

Original languageEnglish
Pages (from-to)4911-4920
Number of pages10
JournalMolecular biology of the cell
Volume18
Issue number12
DOIs
StatePublished - Dec 2007

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