Results 321 to 330 of about 334,121 (353)
A transcriptional control model fordoublesex-dependent sex differentiation inNasoniawasps
Rougeot J, Guerra F, Verhulst EC.
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A mechanism for repressor action [PDF]
Journal of Molecular Biology, 1969 Abstract Deletion mutants have been isolated in which the three structural genes of the lac operon, z , y and a , and the lac operator are fused to the trp operon. In most of these strains, the rate of lac operon expression is greatly increased by the derepression of the trp operon.
Jeffrey H. Miller +3 more
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Repressors of photomorphogenesis
2002The internal programs of plant development are informed in a profound way by environmental light conditions. This review summarizes the contribution of repressor proteins to the light-signaling machinery during seedling development, and discusses the integration of repressors with other, positively acting, light-signaling pathways and auxin and ...
Albrecht G. von Arnim +2 more
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The lac repressor-operator interaction
Journal of Molecular Biology, 1972Abstract The i x86 allele results in Escherichia coli strains that are constitutive for lac operon function and inducer ligands will either repress or induce the enzymes of the operon depending on inducer concentration. The inducer and operator binding properties of the X86 repressor are characterized in vitro .
Alan Jobe, Suzanne Bourgeois
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The FASEB Journal, 2000
In the last 5 years, many co-repressors have been identified in eukaryotes that function in a wide range of species, from yeast to Drosophila and humans. Co-repressors are coregulators that are recruited by DNA-bound transcriptional silencers and play essential roles in many pathways including differentiation, proliferation, programmed cell death, and ...
Burke, Les J., Baniahmad, Aria
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In the last 5 years, many co-repressors have been identified in eukaryotes that function in a wide range of species, from yeast to Drosophila and humans. Co-repressors are coregulators that are recruited by DNA-bound transcriptional silencers and play essential roles in many pathways including differentiation, proliferation, programmed cell death, and ...
Burke, Les J., Baniahmad, Aria
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Angewandte Chemie International Edition in English, 1971
AbstractRepressors are proteins that interact with inducers and operators to regulate the synthesis of enzymes in the cell. Lac repressor ensures that sufficient β‐galactosidase is available to the bacterium Escherichia coli, depending upon the amount of lactose present in the culture medium. It has proved possible to isolate lac repressor from E.coli.
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AbstractRepressors are proteins that interact with inducers and operators to regulate the synthesis of enzymes in the cell. Lac repressor ensures that sufficient β‐galactosidase is available to the bacterium Escherichia coli, depending upon the amount of lactose present in the culture medium. It has proved possible to isolate lac repressor from E.coli.
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BioEssays, 2006
AbstractA fascinating property of germ cells is their ability to maintain totipotency throughout development. At fertilization, this totipotency is unleashed and the egg generates all the cell types needed to make a brand new organism. Occasionally, germ cells differentiate precociously in the embryo or in the gonads and form teratomas, tumors ...
Christopher M. Gallo, Geraldine Seydoux
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AbstractA fascinating property of germ cells is their ability to maintain totipotency throughout development. At fertilization, this totipotency is unleashed and the egg generates all the cell types needed to make a brand new organism. Occasionally, germ cells differentiate precociously in the embryo or in the gonads and form teratomas, tumors ...
Christopher M. Gallo, Geraldine Seydoux
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Studies of a thermolabile repressor
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1965Abstract From physiological and genetic evidence, it is concluded that the repressor for β-galactosidase (EC 3.2.1.23) synthesis in a mutant bacterium, E-103, is thermolabile. The apparent inactivation of repressor is first order and irreversible; however, paradoxically, only a characteristic fraction can be inactivated at a given temperature ...
Tadao Horiuchi, Aaron Novick
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