Molecular cloning and analysis of the yeast flocculation gene FLO1

Junji Watari, Yoshihiro Takata, Masahiro Ogawa, Hirohisa Sahara, Shohei Koshino, Maija‐Leena ‐L Onnela, Ulla Airaksinen, Risto Jaatinen, Merja Penttilä, Sirkka Keränen

Research output: Contribution to journalArticleScientificpeer-review

135 Citations (Scopus)

Abstract

The DNA sequence of the flocculation gene FLO1 of Saccharomyces cerevisiae, which is located on chromosome I (Watari et al., 1989) was determined. The sequence contains a large open reading frame (ORF) of 2586 bp and codes for a protein of 862 amino acids. However, further study (genomic Southern and polymerase chain reaction analyses) indicated that the gene we cloned was not the intact FLO1 gene but a form with an approximately 2 kb deletion in the ORF region. The intact FLO1 gene was then cloned and its nucleotide sequence determined. The sequence revealed that the ORF of the intact gene is composed of 4611 bp which code for a protein of 1537 amino acids. A remarkable feature of the putative Flo1 protein is that it contains four families of repeated sequences composed of 18, 2, 3 and 3 repeats and that it has a large number of serines and threonines. In the deleted FLO1 form, a large part of these repeated sequences was missing. The N‐ and C‐terminal regions are hydrophobic and both contain a potential membrane‐spanning region, suggesting that the Flo1 protein is an integral membrane protein and a cell wall component.

Original languageEnglish
Pages (from-to)211-225
Number of pages15
JournalYeast
Volume10
Issue number2
DOIs
Publication statusPublished - 1 Jan 1994
MoE publication typeA1 Journal article-refereed

Keywords

  • FLO1
  • lectin
  • repeated sequences
  • Yeast flocculation

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