title: Biotechnological strains of Komagataella (Pichia) pastoris are Komagataella phaffii as determined from multigene sequence analysis.
abstract: Pichia pastoris was reassigned earlier to the genus Komagataella following phylogenetic analysis of gene sequences. Since that time, two additional species of Komagataella have been described, K. pseudopastoris and K. phaffii. Because these three species are unlikely to be resolved from the standard fermentation and growth tests used in yeast taxonomy, the identity of biotechnologically important strains of K. pastoris was determined from multigene sequence analyses. Results from this study show that the strain of 'Pichia pastoris' commonly used in gene expression studies is actually K. phaffii.
authors.affiliation: National Center for Agricultural Utilization Research, Agricultural Research Service, US Department of Agriculture, Peoria, IL 61604, USA. cletus.kurtzman@ars.usda.gov
authors.forename: Cletus Paul
authors.initials: CP
authors.lastname: Kurtzman
mesh_terms: D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000737:chemistry / Q000235:genetics; D005656:Fungal Proteins / Q000235:genetics; D008969:Molecular Sequence Data; D020648:Peptide Elongation Factor 1 / Q000235:genetics; D010802:Phylogeny; D010843:Pichia / Q000145:classification* / Q000235:genetics*; D012318:RNA Polymerase I / Q000235:genetics; D004718:Saccharomycetales / Q000145:classification* / Q000235:genetics*; D017422:Sequence Analysis, DNA
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer; D005656:Fungal Proteins; D020648:Peptide Elongation Factor 1; D012318:RNA Polymerase I