Document 0448 DOCN M9490448 TI The mating-type region of Schizosaccharomyces pombe contains an essential gene encoding a protein homologous to human modulators of HIV transactivation. DT 9411 AU Michael H; Schmidt H; Fleck O; Gutz H; Liedtke C; Lorentz A; Ostermann K; Institut fur Genetik, Technische Universitat Braunschweig,; Germany. SO Gene. 1994 Aug 5;145(2):205-10. Unique Identifier : AIDSLINE GENBANK/U02280 AB In Schizosaccharomyces pombe, an intrachromosomal crossover between the mating type (MT) expression locus and one of the silent donor cassettes is lethal due to the loss of the intervening L region. The region contains one essential gene, let1. This gene was cloned and sequenced. The deduced amino acid (aa) sequence of let1 shows extensive homologies with SUG1 from Saccharomyces cerevisiae. Significant homologies were also found with the human HIV transactivation modulators, MSS1 and TBP-1, as well as with subunit 4 of the mammalian 26 S protease. The data indicate that let1 is a member of a recently defined multigene family of ATPases. DE Adenosinetriphosphatase/CLASSIFICATION/*GENETICS Amino Acid Sequence Base Sequence Cloning, Molecular Comparative Study Fungal Proteins/*GENETICS Genes, Fungal/*GENETICS Genes, Lethal/*GENETICS Human HIV/GENETICS Molecular Sequence Data Peptides/GENETICS Schizosaccharomyces/*GENETICS Sequence Analysis, DNA Sequence Homology, Amino Acid Support, Non-U.S. Gov't Trans-Activation (Genetics) JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).