Results 51 to 60 of about 136,854 (259)
Mating-type differentiation and mate selection in the homothallic Chlamydomonas monoica [PDF]
By using combinations of phenotypically-distinct--but sexually-compatible--mutant strains of C. monoica (zym-1, zym-27, and nit-2) and assaying for zygote genotypes in genetically-mixed mating populations (where gametes of the two parental homothallic strains were present at similar frequencies), we have found that matings occur preferentially between ...
van den Ende, H., VanWinkle-Swift, K.P.
openaire +4 more sources
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Recombination suppression on sex chromosomes often extends in a stepwise manner, generating evolutionary strata of differentiation between sex chromosomes.
Anna Liza Bazzicalupo +3 more
doaj +1 more source
1. Conjugating strains representing three different mating types of Tetrahymena pyriformis have been isolated from fresh water ponds in the Woods Hole, Massachusetts, area and established in axenic cultures.2. These strains have the same amino acid and vitamin requirements as T. pyriformis E.3. The cytology of conjugation is described.4.
ALFRED M. ELLIOTT, ROBERT E. HAYES
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MATING TYPE AND SPORULATION IN YEAST I. MUTATIONS WHICH ALTER MATING-TYPE CONTROL OVER SPORULATION [PDF]
ABSTRACT Fifty-two inositol-requiring mutants of Saccharomyces cerevisiae were isolated following mutagenesis with ethyl methanesulfonate. Complementation and tetrad analysis revealed ten major complementation classes, representing ten independently segregating loci (designated ino1 through ino10) which recombined freely with their ...
A K, Hopper, B D, Hall
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Mechanisms of IgE‐mediated food allergy and the role of allergen‐specific B cells
Food allergy arises when allergen‐specific B cells preferentially produce immunoglobulin E (IgE) antibodies against harmless foods. This article explains the mechanisms driving IgE‐mediated reactions, highlights the central role of these B cells, and discusses how natural tolerance (NT) and oral immunotherapy (OIT) can reshape allergic immune responses.
Juan‐Felipe López +2 more
wiley +1 more source
Selfing mutants link Ku proteins to mating type determination in Tetrahymena.
Recognition of self and nonself is important for outcrossing organisms, and different mating types establish the barrier against self-mating. In the unicellular ciliate T.
I-Ting Lin, Meng-Chao Yao
doaj +1 more source
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai +9 more
wiley +1 more source
Regulation of mating type switching by the mating type genes and RME1 in Ogataea polymorpha [PDF]
Abstract Saccharomyces cerevisiae and its closely related yeasts undergo mating type switching by replacing DNA sequences at the active mating type locus ( MAT ) with one of two silent mating type cassettes. Recently, a novel mode of mating type switching
Katsuyoshi Yamamoto +4 more
openaire +2 more sources
Tau acetylation at K331 has limited impact on tau pathology in vivo
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto +3 more
wiley +1 more source

