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Full-Text Articles in Life Sciences
The C. Elegans Heterochronic Gene Lin-4 Encodes Small Rnas With Antisense Complementarity To Lin-14, Rosalind Lee, Rhonda Feinbaum, Victor Ambros
The C. Elegans Heterochronic Gene Lin-4 Encodes Small Rnas With Antisense Complementarity To Lin-14, Rosalind Lee, Rhonda Feinbaum, Victor Ambros
Victor R. Ambros
lin-4 is essential for the normal temporal control of diverse postembryonic developmental events in C. elegans. lin-4 acts by negatively regulating the level of LIN-14 protein, creating a temporal decrease in LIN-14 protein starting in the first larval stage (L1). We have cloned the C. elegans lin-4 locus by chromosomal walking and transformation rescue. We used the C. elegans clone to isolate the gene from three other Caenorhabditis species; all four Caenorhabditis clones functionally rescue the lin-4 null allele of C. elegans. Comparison of the lin-4 genomic sequence from these four species and site-directed mutagenesis of potential open reading frames …
Thermodynamics Of Single-Stranded Rna And Dna Interactions With Oligolysines Containing Tryptophan. Effects Of Base Composition., David Mascotti, Timothy Lohman
Thermodynamics Of Single-Stranded Rna And Dna Interactions With Oligolysines Containing Tryptophan. Effects Of Base Composition., David Mascotti, Timothy Lohman
David P. Mascotti
No abstract provided.
Genetic Analyses Of Photopigment Biosynthesis In Eubacteria: A Guiding Light For Algae And Plants, David Bollivar, Carl E. Bauer, Jon Y. Suzuki
Genetic Analyses Of Photopigment Biosynthesis In Eubacteria: A Guiding Light For Algae And Plants, David Bollivar, Carl E. Bauer, Jon Y. Suzuki
David Bollivar
A wide variety of macrocyclic tetrapyrrole compounds are synthesized by cells for use in diverse cellular processes. As shown in Fig. 1, this pathway includes the synthesis of closed tetrapyrrole compounds that contain metals, such as cobalt-containing cobalamin (vitamin B12), nickel-containing methanogenesis coenzyme F430, copper-containing pigment turacin, iron-containing heme and siroheme, and magnesium-containing chlorophylls and bacteriochlorophylls. Also synthesized by this pathway are a variety of open macrocyclic compounds such as the family of bilins that are used as a source of light-harvesting pigments in cyanobacteria, red algae, and cryptophytes as well as the chromophore that is covalently attached to phytochrome …
A Bacterial Protease Perturbs The Paracellular Barrier Function Of Transporting Epithelial Monolayers In Culture, Ali Azghani
A Bacterial Protease Perturbs The Paracellular Barrier Function Of Transporting Epithelial Monolayers In Culture, Ali Azghani
Ali Azghani
Avian Hatching Asynchrony: Brood Classification Based On Discriminant Function Analysis Of Nestling Masses, Given Harper, Steven A. Juliano, Charles F. Thompson
Avian Hatching Asynchrony: Brood Classification Based On Discriminant Function Analysis Of Nestling Masses, Given Harper, Steven A. Juliano, Charles F. Thompson
Given Harper
Effects Of Predator Size And Female Receptivity On Courtship Behavior Of Captive-Bred Male Guppies, Given Harper, Kristin Braun
Effects Of Predator Size And Female Receptivity On Courtship Behavior Of Captive-Bred Male Guppies, Given Harper, Kristin Braun
Given Harper
The effects of predator size and female receptivity on the courtship behavior of captivebred male guppies (Poecilia reticulata) were investigated. Male guppies exhibited riskreckless courtship behavior in that they did not decrease the amount of time spent performing visually conspicuous sigmoid displays and increase the frequency of attempted forced copulations when large predatory fish were present. Female receptivity (i.e., virgin or non-virgin females) also had no effect on male courtship behavior.