Results 161 to 170 of about 5,930 (185)

The trpA Gene on the Plastid Genome of Cyanidium caldarium Strain RK-1

Current Genetics, 1994
The trpA gene (for the alpha subunit of tryptophan synthase) was found on the plastid genome of the "primitive" unicellular red alga Cyanidium caldarium strain RK-1. This is the first example of an actively-transcribed gene for tryptophan synthase encoded on a plastid genome.
Tsuneyoshi Kuroiwa, N Ohta
exaly   +3 more sources

Translational Coupling of the trpB and trpA Genes in the Escherichia coli Tryptophan Operon. [PDF]

Journal of Bacteriology, 1984
We investigated whether there is translational coupling between the tryptophan operon trpB and trpA genes in Escherichia coli. A trp-lac fusion system was used in which part of the trpA gene is fused to the lacZ gene. This fusion protein has the translation initiation site of trpA but retains beta-galactosidase activity.
C L Squires, C Squires
exaly   +3 more sources

Mitomycin C-Induced Expression of trpA of Salmonella Typhimurium Inserted Into the Plasmid ColE1. [PDF]

Journal of Bacteriology, 1977
EcoRI endonuclease digestion of the deoxyribonucleic acid of a phi80 transducing phage carrying the entire tryptophan (trp) operon of Salmonella typhimurium (phi80 S.t.trpE-A) yielded a 4.3 X 10(6)-dalton fragment containing intact trpE, trpD, and trpC and a 3.35 X 10(6)-dalton fragment containing intact trpA.
C Yanofsky
exaly   +3 more sources

Nucleotide Sequences of trpA of Salmonella Typhimurium and Escherichia coli: An Evolutionary Comparison. [PDF]

Proceedings of the National Academy of Sciences of the United States of America, 1979
The complete nucleotide sequences of trpA of Salmonella typhimurium and Escherichia coli were determined. The nucleotide sequences are 24.8% divergent, compared with amino acid sequence divergence of 14.9%. Over half of the codons of each gene contain synonymous nucleotide changes.
B P Nichols, C Yanofsky
exaly   +3 more sources

Development of Additional Selectable Markers for the Halophilic Archaeon Haloferax volcanii Based on the leuB and trpA Genes.

Applied and Environmental Microbiology, 2004
Since most archaea are extremophilic and difficult to cultivate, our current knowledge of their biology is confined largely to comparative genomics and biochemistry.
Thorsten Allers, Greg H P Ngo, Robert
exaly   +2 more sources

Reversion of trpA nonsense mutations by deletion of the chain-termination codons

Biochimie, 1989
This paper describes a novel mechanism for reversion of nonsense mutations in the trpA gene of Escherichia coli. This mechanism, deletion of the nonsense codon, was discovered in the course of selecting for missense revertants of trpA(UGA211) and for catalytically active tryptophan synthetase alpha chain revertants of trpA(UAA234) and trpA(UAG234 ...
S D, Tucker, E J, Murgola, K A, Hijazi
openaire   +2 more sources

Sequence Verification of Mutant Codon Assignments in trpA of Escherichia coli

DNA, 1986
Over the past 30 years, a variety of mutations have been characterized in trpA, the gene for the alpha-subunit of tryptophan synthetase in Escherichia coli. On the basis of amino acid sequence analyses, reversion studies, or suppressibility by codon-specific translational suppressors, base substitutions were deduced and codons assigned for each ...
S D, Tucker, E J, Murgola
openaire   +2 more sources

The TrpA Protein of Trichodesmium erythraeum IMS101 Is a Non-Fibril-Forming Collagen and a Component of the Outer Sheath

Microbiology (United Kingdom), 2014
Collagen molecules are structural in nature and primarily found in eukaryotic, multicellular organisms. Recently, a collagen-like protein, TrpA, was identified and characterized in the marine cyanobacterium Trichodesmium erythraeum IMS 101, and it was shown to be involved in maintaining the ...
Siobhan Toal, Shivanthi Anandan
exaly   +3 more sources

Drosophila TRPA channel modulates sugar-stimulated neural excitation, avoidance and social response

Nature Neuroscience, 2008
Drosophila melanogaster postfeeding larvae show food-averse migration toward food-free habitats before metamorphosis. This developmental switching from food attraction to aversion is regulated by a neuropeptide Y (NPY)-related brain signaling peptide.
Jie, Xu, Andrew T, Sornborger, Jennifer K, Lee, Ping, Shen   +3 more
openaire   +2 more sources

Characterization of a novel collagen‐like protein TrpA in the cyanobacterium Trichodesmium erythraeum IMS101

Journal of Phycology, 2013
The collagen protein family is diverse and its membership is continually expanding as new collagen‐like molecules are identified. Identification of collagen in unicellular eukaryotes and prokaryotes has opened discussion on the function of these collagens and their role in the emergence of multicellularity.
Simara, Price, Shivanthi, Anandan
openaire   +2 more sources