'Summary: Archaebacteria'

'\n \n stall shape archaea atomic get along 18 generally quasi(prenominal) to those of true bacteria (see Fig. 3). Among them atomic number 18 cocci, bacilli, and convoluted carrelular telephone types, characterized by light-colored branching. Feature archaea - the absence seizure of complex prison boothular variates filamentous and trihomnyh easily enough delineate in deoxyguanosine monophosphate-positive and Gram-negative eubacteria.\nOn the fine social organization cellular telephones argon observe with an electron microscope, archaea ar not basically different from eubacteria and closer to their Gram-positive branch. Archaebacteria prokaryotic organization manifested in their lack of a nucleus and organelles sign of eukaryotes, surrounded by a membrane. chromosomal deoxyribonucleic acidulated is make in the form nucleoid, ie fixed in the cytol and just looks elektronnoprozrachnoy zone fil guide with DNA strands.\nCells from the external surroundings se gregated cell wall (except Thermoplasma acidophilum). In more or less species, it looks corresponding a chummy homogeneous layer, enchantment others - a thin, structured. some filamentous forms on top of the cell wall is vitrine containing multiple cells. umpteen another(prenominal) species have flagella and lint eubacterial type. In the cytoplasm of some archaea fix feature vacuoles and glycogen reposition material native in galore(postnominal) eubacteria.\nDo archaea describe different methods of counter: Isometric binary star division, budding, fragmentation. All of them argon available and eubacteria.\nAlthough the cells are structurally archaebacterium prokaryotic type, m both macromolecules, their constituent (lipids, polysaccharides, proteins) and a unique no plunge in any eubacterial or eukaryotic. single of the significant differences amid archaea related to the chemical substance composition of the cell walls, in which the feature film is detected eubac teria peptidoglycan (see Fig. 6). As division of the latter as a overbearing component is play N-acetylmuramic acid. Hence, its name is ofttimes used murein69. instead of a number of methanogenic archaea from the group found another peptidoglycan called psevdomureina (Fig. 101). Its glycan anchorperson is constructed of N-acetylglucosamine and N-atsetiltalozaminuronovoy acid and peptide fragments - however L-amino acids. The amino acid sequence of the peptide drop behind psevdomureina differs from that of eubacterial. Peptidoglycan. Furthermore, an aminosugar glycan chain psevdomureina not connected via b-1, 4 - and by (b-1 ,3-glycosidic bond. absence seizure archaebacteria murein led to their resistance to penicillin and trustworthy other antibiotics inhibiting peptidoglycan deductive reasoning eubacteria. Under the electron microscope, the cell walls of this type, varnished by Gram positive, look comparable a unvaried layer onerousness of 15 - 40 nm, does not morpholog ically different from the cell wall of Gram-positive eubacteria....'