A New Role for the Tumour Suppressor Lin-35 during Meiotic Recombination in Caenorhabditis Elegans
نویسنده
چکیده
..........................................................................................................................ii TABLE OF CONTENTS........................................................................................................ iii LIST OF TABLES ..................................................................................................................v LIST OF FIGURES................................................................................................................vi LIST OF ABBREVIATIONS ..................................................................................................vii ACKNOWLEDGEMENTS ................................................................................................... viii CHAPTER 1: INTRODUCTION ..............................................................................................1 1.1 The role of meiotic recombination ...........................................................................1 1.2 Meiotic prophase and recombination in Caenorhabditis elegans ............................1 1.3 Rec-1 randomizes crossover distribution..................................................................6 1.4 The role of chromatin structure and chromatin remodeling during meiotic recombination .................................................................................................................8 1.5 The tumour suppressor and chromatin modifier LIN-35........................................10 1.6 lin-35 (n745) ...........................................................................................................12 1.7 Thesis objectives.....................................................................................................12 CHAPTER 2: MATERIALS AND METHODS.........................................................................13 2.1 General methods .....................................................................................................13 2.2 Strain construction ..................................................................................................14 2.3 Crosses ....................................................................................................................16 2.4 Calculating recombination frequency.....................................................................16 2.5 Brood analysis ........................................................................................................17 2.6 RNAi.......................................................................................................................17
منابع مشابه
A Role for the Malignant Brain Tumour (MBT) Domain Protein LIN-61 in DNA Double-Strand Break Repair by Homologous Recombination
Malignant brain tumour (MBT) domain proteins are transcriptional repressors that function within Polycomb complexes. Some MBT genes are tumour suppressors, but how they prevent tumourigenesis is unknown. The Caenorhabditis elegans MBT protein LIN-61 is a member of the synMuvB chromatin-remodelling proteins that control vulval development. Here we report a new role for LIN-61: it protects the ge...
متن کاملA conserved function for a Caenorhabditis elegans Com1/Sae2/CtIP protein homolog in meiotic recombination.
Genome stability relies on faithful DNA repair both in mitosis and in meiosis. Here, we report on a Caenorhabditis elegans protein that we found to be homologous to the mammalian repair-related protein CtIP and to the budding yeast Com1/Sae2 recombination protein. A com-1 mutant displays normal meiotic chromosome pairing but forms irregular chromatin aggregates instead of diakinesis bivalents. ...
متن کاملCaenorhabditis elegans prom-1 is required for meiotic prophase progression and homologous chromosome pairing.
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 ...
متن کاملCaenorhabditis elegans prom-1 Is Required for Meiotic Prophase Progression and Homologous Chromosome Pairing□D
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 ...
متن کاملCaenorhabditis elegans HIM-18/SLX-4 Interacts with SLX-1 and XPF-1 and Maintains Genomic Integrity in the Germline by Processing Recombination Intermediates
Homologous recombination (HR) is essential for the repair of blocked or collapsed replication forks and for the production of crossovers between homologs that promote accurate meiotic chromosome segregation. Here, we identify HIM-18, an ortholog of MUS312/Slx4, as a critical player required in vivo for processing late HR intermediates in Caenorhabditis elegans. DNA damage sensitivity and an acc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2010