1988b. Structure and reproduction of Amansia and Melanamansia gen. nov. (Rhodophyta, Rhodomelaceae) on the southeastern African coast. J. Phycol. 24: 209-223.NORRIS, R.E. (1988). The structure and reproduction of Amansia and Melanamansia gen. nov. (Rhodophyta, Rhodomelaceae) on ...
Archaebacteria Lacking a nucleus and organelles, prokaryotic organisms are thought to be some of the oldest life forms on the planet. Archaea can be found in places where other life would not survive. They have evolved to occupy niches with extreme conditions, often compared to the earth ...
A reconciling hypothesis holds that spliceosomal introns co-evolved with the origin of the eukaryote ancestor: an archaebacterial host acquired an α-proteobacterial symbiont (the mitochondrial ancestor). Group II introns from this symbiont invaded the hosts' genome and evolved to spliceosomal introns...
Tailed bacteriophages (order, Caudovirales) account for the majority of all phages. However, the long flexible tail of siphophages hinders comprehensive investigation of the mechanism of viral gene delivery. Here, we report the atomic capsid and in-situ
named proteorhodopsin (PR)6. Since 2000, thousands of microbial rhodopsins have been identified, in all three domains of life (bacteria, archaea and eukaryota) as well as in large viruses3. The renaissance of rhodopsins as a research field has culminated in the development of optogenetics, the...
Bacteria are prokaryotic, single-celled microscopic organisms present almost everywhere. Explore the structure of bacteria, classification of bacteria and its reproduction.
Most ornithochores (plants with bird-dispersed seeds) have conspicuous diaspores attractive to such fruit-eating birds as thrushes, pigeons, barbets (members of the bird family Capitonidae), toucans (family Ramphastidae), and hornbills (family Bucerotidae), all of which either excrete or reg...
economic models to formulate sustainability strategies for this product. Considering these factors, along with the study of sex determination and differentiation, sex ratio, nutrition, reproduction, genetic population structure, and other essential biological traits, obtaining a reference genome is a ...
Arsenite oxidase is thought to be an ancient enzyme, originating before the divergence of the Archaea and the Bacteria. We have investigated the nature of the molybdenum active site of the arsenite oxidase from the Alphaproteobacterium Rhizobium sp. str.
Rhodopsins, most of which are proton pumps generating transmembrane electrochemical proton gradients, span all three domains of life, are abundant in the biosphere, and could play a crucial role in the early evolution of life on earth. Whereas archaeal a