A mammalian KASH domain protein coupling meiotic chromosomes to the cytoskeleton
- Authors
- Horn, H.F., Kim, D.I., Wright, G.D., Wong, E.S., Stewart, C.L., Burke, B., and Roux, K.J.
- ID
- ZDB-PUB-131024-6
- Date
- 2013
- Source
- The Journal of cell biology 202(7): 1023-1039 (Journal)
- Registered Authors
- Keywords
- none
- MeSH Terms
-
- Male
- Cells, Cultured
- Molecular Sequence Data
- Sequence Homology, Amino Acid
- RNA, Small Interfering/genetics
- Microtubules/metabolism
- Animals
- Reverse Transcriptase Polymerase Chain Reaction
- Nuclear Proteins/antagonists & inhibitors
- Nuclear Proteins/genetics
- Nuclear Proteins/metabolism*
- Real-Time Polymerase Chain Reaction
- Spermatocytes/cytology
- Spermatocytes/metabolism
- In Situ Hybridization, Fluorescence
- Membrane Proteins/antagonists & inhibitors
- Membrane Proteins/genetics
- Membrane Proteins/metabolism*
- Telomere-Binding Proteins/antagonists & inhibitors
- Telomere-Binding Proteins/genetics
- Telomere-Binding Proteins/metabolism*
- HeLa Cells
- Telomere/genetics
- Cytoskeleton/metabolism*
- Mice
- RNA, Messenger/genetics
- Immunoenzyme Techniques
- Microtubule-Associated Proteins/antagonists & inhibitors
- Microtubule-Associated Proteins/genetics
- Microtubule-Associated Proteins/metabolism*
- Amino Acid Sequence
- Protein Structure, Tertiary
- Cell Cycle Proteins/antagonists & inhibitors
- Cell Cycle Proteins/genetics
- Cell Cycle Proteins/metabolism*
- Cytoplasmic Dyneins/genetics
- Cytoplasmic Dyneins/metabolism*
- Meiosis/physiology*
- Chromosome Pairing*
- Humans
- Nuclear Envelope/metabolism
- Blotting, Western
- Cell Nucleus/genetics
- Cell Nucleus/metabolism
- HEK293 Cells
- Female
- PubMed
- 24062341 Full text @ J. Cell Biol.
Chromosome pairing is an essential meiotic event that ensures faithful haploidization and recombination of the genome. Pairing of homologous chromosomes is facilitated by telomere-led chromosome movements and formation of a meiotic bouquet, where telomeres cluster to one pole of the nucleus. In metazoans, telomere clustering is dynein and microtubule dependent and requires Sun1, an inner nuclear membrane protein. Here we provide a functional analysis of KASH5, a mammalian dynein-binding protein of the outer nuclear membrane that forms a meiotic complex with Sun1. This protein is related to zebrafish futile cycle (Fue), a nuclear envelope (NE) constituent required for pronuclear migration. Mice deficient in this Fue homologue are infertile. Males display meiotic arrest in which pairing of homologous chromosomes fails. These findings demonstrate that telomere attachment to the NE is insufficient to promote pairing and that telomere attachment sites must be coupled to cytoplasmic dynein and the microtubule system to ensure meiotic progression.