MCB 3020 Lecture Notes - Lecture 8: Pilin, Polyploid, Chromosome
Document Summary
Archaeal vs bacterial cytoplasm: very similar lack of membrane-enclosed organelles, may contain inclusion bodies (e. g. gas vesicles for buoyancy control, all the usual components ribosomes. Nucleoid region inclusion bodies: so(cid:373)e stru(cid:272)tures (cid:373)ay (cid:271)e differe(cid:374)t, ho(cid:449)e(cid:448)er . Ribosomes: complex structures, sites of protein synthesis consisting of protein/rna, entire ribosome. Eukaryotic (80s) s = svedburg unit: bacterial and archaeal ribosomal rna. Archaea have additional 5. 8s (also seen in eukaryotic large subunit: proteins vary. Archaea more similar to eukarya than to bacteria. Irregularly shaped region in bacteria and archaea: usually not membrane bound (few exceptions, location of chromosome and associated proteins, usually 1 (some evidence for polyploidy in some archaeons, supercoiling and nucleoid proteins (histones, alba, condensins) aid in folding. External structures: describe cannulae and hami, compare and contrast bacterial and archaeal pili, compare and contrast bacterial and archaeal flagella in terms of their structure and function.
