Search results
Results from the WOW.Com Content Network
Spores of Riccia sorocarpa still associated in tetrads following meiosis. The tetrad is the four spores produced after meiosis of a yeast or other Ascomycota, Chlamydomonas or other alga, or a plant. After parent haploids mate, they produce diploids. Under appropriate environmental conditions, diploids sporulate and undergo meiosis.
Guanine tetrads can also influence recombination, replication, and transcription. [1] [2] For instance, guanine tetrads are found in the promoter region of the Myc family of oncogenes. [10] They also function in immunoglobulin class switching and may play a role in the genome of HIV. [11] Guanine tetrads appear frequently in the telomeric ...
Depending on the direction of the strands or parts of a strand that form the tetrads, structures may be described as parallel or antiparallel. G-quadruplex structures can be computationally predicted from DNA or RNA sequence motifs, [ 11 ] [ 12 ] but their actual structures can be quite varied within and between the motifs, which can number ...
Water retention. Soil aggregates and water infiltration influence enzyme activity [70] [71] Soil fertility and plant production: Use of enzyme activity as indicator of soil quality [71] [72] Composting. Impacts of composting municipal solid waste on soil microbial activity [10] Soil organic matter stability
However, because water is a polar molecule this process of simple diffusion is relatively slow, and in tissues with high water permeability the majority of water passes through aquaporin. [ 4 ] [ 5 ] The 2003 Nobel Prize in Chemistry was awarded jointly to Peter Agre for the discovery of aquaporins [ 6 ] and Roderick MacKinnon for his work on ...
Ammonia is an essential ingredient in many biological processes, including as a building block to form amino acids, which in turn can link together into long chains to make proteins.
Thus each half of the protein forms 3.5 TMSs surrounding the channel. The structure explains why GlpF is selectively permeable to straight chain carbohydrates, and why water and ions are largely excluded. Aquaporin-1 (AQP1) and the bacterial glycerol facilitator, GlpF can transport O 2, CO 2, NH 3, glycerol, urea, and water to varying degrees.
Eggs deliver protein, especially for breakfast. As egg prices rise, dietitians share foods with more protein than an egg, including beans, tofu and chicken. 9 foods with more protein than an egg ...