kinesin family member 23 | OKDB#: 5630 |
Symbols: | KIF23 | Species: | human | ||
Synonyms: | CHO1, KNSL5, MKLP1, MKLP-1 | Locus: | 15q23 in Homo sapiens |
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Entrez Gene
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General Comment | NCBI Summary: The protein encoded by this gene is a member of kinesin-like protein family. This family includes microtubule-dependent molecular motors that transport organelles within cells and move chromosomes during cell division. This protein has been shown to cross-bridge antiparallel microtubules and drive microtubule movement in vitro. Alternate splicing of this gene results in multiple transcript variants. [provided by RefSeq, Jul 2013] | ||||
General function | |||||
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Cellular localization | Nuclear | ||||
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Ovarian function | |||||
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Ovarian localization | Oocyte | ||||
Comment | The molecular architecture of the meiotic spindle is remodeled during metaphase arrest in oocytes. Costa MFA et al. (2019) Before fertilization, oocytes of most species undergo a long, natural arrest in metaphase. Before this, prometaphase I is also prolonged, due to late stable kinetochore-microtubule attachment. How oocytes stably maintain the dynamic spindle for hours during these periods is poorly understood. Here we report that the bipolar spindle changes its molecular architecture during the long prometaphase/metaphase I in Drosophila melanogaster oocytes. By generating transgenic flies expressing GFP-tagged spindle proteins, we found that 14 of 25 spindle proteins change their distribution in the bipolar spindle. Among them, microtubule cross-linking kinesins, MKlp1/Pavarotti and kinesin-5/Klp61F, accumulate to the spindle equator in late metaphase. We found that the late equator accumulation of MKlp1/Pavarotti is regulated by a mechanism distinct from that in mitosis. While MKlp1/Pavarotti contributes to the control of spindle length, kinesin-5/Klp61F is crucial for maintaining a bipolar spindle during metaphase I arrest. Our study provides novel insight into how oocytes maintain a bipolar spindle during metaphase arrest.////////////////// | ||||
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Mutations | 0 mutations | ||||
Genomic Region | show genomic region | ||||
Phenotypes and GWAS | show phenotypes and GWAS | ||||
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created: | July 10, 2019, 10:57 a.m. | by: |
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last update: | July 10, 2019, 10:58 a.m. | by: | hsueh email: |
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