Biology 2581B Study Guide - Midterm Guide: Lokiarchaeota, Endocytosis, Archaea
6 Mar 2017
School
Department
Course
Professor
Document Summary
Loki archea: dynamic, actin-based cytoskeleton, vesicular trafficking, membrane-remodelling capabilities, endocytosis and/or phagocytosis. Begins with two distinct organisms, a and b. Organism a feeds on b: process of feeding is quite complex, normally, b would get digested. What if b is indigested (not digested): as this relationship prolongs, there must be a beneficial relationship between a and b symbiotic or parasitic; a= host, b=endosymbiont. B will be trapped in a stronger relationships grow. As they develop strong relationship, there are gene loss of both a and b endosymbiotic gene loss: because the genes are redundant in a or b, thus one thinks it is not needed. Endosymbiotic gene transfer occurs from endosymbiont to host: as the intermediate stage, both a and b have the gene at first, host gains more and more control of endosymbiont; endosymbiont loses its autonomy. How should the tree of life really look: we mentioned the vertical flow is important.
