MBIO 3470 Lecture Notes - Lecture 14: Primary Nutritional Groups, Halococcus, Acidophile

• School: University of Manitoba
• Department: Microbiology
• Course: MBIO 3470
• Professor: Vladimir Yurkov

Document Summary

Subgroup 2 (rod) and 3 (cocci): most fall within these subgroups. Generally grows in terrestrial and marine environments at near neutral ph (5. 0-7. 0) and display similar physiologies. Obligate anaerobes, generate energy by anaerobic respiration using s-prime as a terminal e- acceptor. Facultative chemoorganoheterotrophs and are able to use organic nutrients as carbon, energy and e- sources. As chemolithoautotrophs, they use hydrogen as their energy and e- source (lithotrophy) and co2 is used as a carbon source (autotrophy) In anaerobic respiration e- produced form the oxidation of substrates is transferred through the e- transport system, where s-prime is the terminal e- acceptor. Cyts (cytochromes) have been detected and likely make up a part of the ets. As organotrophs: use a variety of compounds as e- & energy sources: starch, sugars, peptides, amino acids, malate, ethanol, ect. Chemolithoautotrophs: oxidize hydrogen with a membrane-bound hydrogenase, made up of 2 or more different protein subunits with ni and fes (ferredoxin) prosthetic groups.