Cellular distribution of COT1 kinase in Neurospora crassa

R. Gorovits, K. A. Sjollema, J. H. Sietsma, O. Yarden*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The Neurospora crassa cot-1 gene encodes a Ser/Thr protein kinase, which is involved in hyphal elongation. Many vacuoles, abnormally shaped mitochondria, and nuclei, along with differences in the structure of the cell wall and hyphal septa, were observed in hyphae of the cot-1 mutant shortly after a shift to the restrictive temperature. Immunolocalization experiments indicated that COT1 was associated with the cytoplasmic membrane; COT1 was also detected in the cytoplasm. The membrane-associated COT1 was absent from the cot-1 mutant when shifted to the restrictive temperature, as was a lower molecular weight isoform of COT1. We propose that COT1 may be involved in several cellular processes, and the spatial and temporal regulation of COT1 activity involves trafficking of the kinase within the fungal cell and its possible interaction with additional proteins. (C) 2000 Academic Press.

Original languageAmerican English
Pages (from-to)63-70
Number of pages8
JournalFungal Genetics and Biology
Volume30
Issue number1
DOIs
StatePublished - 2000

Bibliographical note

Funding Information:
We thank Michael Plamann for fruitful discussions. This research was supported by BARD, The United States–Israel Binational Agricultural Research and Development Fund, and The Israel Science Foundation.

Keywords

  • COT1 kinase
  • Fungal growth and development
  • Neurospora crassa

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