title: PfaH2: a novel hydrophobin from the ascomycete Paecilomyces farinosus.
abstract: The pfah2 gene coding for a novel hydrophobin PfaH2 from the ascomycete Paecilomyces farinosus was identified during sequencing of random clones from a cDNA library. The corresponding protein sequence of PfaH2 deduced from the cDNA comprised 134 amino acids (aa). A 16 aa signal sequence preceded the N-terminus of the mature protein. PfaH2 belonged to the class Ia hydrophobins. The protein was isolated using trifluoroacetic acid extraction and purified via SDS-PAGE and high-performance liquid chromatography. The surface activity of the recently described PfaH1 and of PfaH2 was compared by the determination of contact angles (CAs) on glass slides and Teflon tape, and the CA of distilled water droplets was measured on glass slides coated with hydrophobin PfaH1 or PfaH2. Surprisingly, both hydrophobins adsorbed to hydrophilic surfaces and changed their physicochemical properties to a similar quantitative extent, although little aa sequence homology was found.
authors.affiliation: Naturwissenschaftliche Fakultät der Leibniz Universität Hannover, Institut für Lebensmittelchemie, Hannover, Germany.
authors.forename: Katerina
authors.initials: K
authors.lastname: Zelena
authors.forename: Meike
authors.initials: M
authors.lastname: Takenberg
authors.forename: Stefan
authors.initials: S
authors.lastname: Lunkenbein
authors.forename: Susanne K
authors.initials: SK
authors.lastname: Woche
authors.forename: Manfred
authors.initials: M
authors.lastname: Nimtz
authors.forename: Ralf G
authors.initials: RG
authors.lastname: Berger
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002851:Chromatography, High Pressure Liquid; D019295:Computational Biology; D018076:DNA, Complementary; D004591:Electrophoresis, Polyacrylamide Gel; D005656:Fungal Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D008969:Molecular Sequence Data; D010143:Paecilomyces / Q000378:metabolism*; D010802:Phylogeny; D053719:Tandem Mass Spectrometry
chemical_list: D018076:DNA, Complementary; D005656:Fungal Proteins