title: Why does Kluyveromyces lactis not grow under anaerobic conditions? Comparison of essential anaerobic genes of Saccharomyces cerevisiae with the Kluyveromyces lactis genome.
abstract: Although some yeast species, e.g. Saccharomyces cerevisiae, can grow under anaerobic conditions, Kluyveromyces lactis cannot. In a systematic study, we have determined which S. cerevisiae genes are required for growth without oxygen. This has been done by using the yeast deletion library. Both aerobically essential and nonessential genes have been tested for their necessity for anaerobic growth. Upon comparison of the K. lactis genome with the genes found to be anaerobically important in S. cerevisiae, which yielded 20 genes that are missing in K. lactis, we hypothesize that lack of import of sterols might be one of the more important reasons that K. lactis cannot grow in the absence of oxygen.
authors.affiliation: Institute of Biology Leiden, Leiden University, Leiden, The Netherlands.
authors.forename: I S Ishtar
authors.initials: IS
authors.lastname: Snoek
authors.forename: H Yde
authors.initials: HY
authors.lastname: Steensma
mesh_terms: D000693:Anaerobiosis; D001692:Biological Transport / Q000235:genetics; D017353:Gene Deletion; D020043:Genes, Essential; D005800:Genes, Fungal; D016681:Genome, Fungal; D015698:Genomic Library; D007716:Kluyveromyces / Q000235:genetics* / Q000254:growth & development* / Q000502:physiology; D012441:Saccharomyces cerevisiae / Q000235:genetics*; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics*; D013261:Sterols / Q000378:metabolism
chemical_list: D029701:Saccharomyces cerevisiae Proteins; D013261:Sterols