2
Cell membrane cell wall ( plus outer membrane Cell wal peptidoglycan attached structures
Cell Envelope • Cell membrane + cell wall (+ plus outer membrane) • Cell wall – peptidoglycan – attached structures
Gram positive Peptidoglycan Plasma membrane Gram negative Outer membrane Peptidoglycan Periplasmic space Plasma membrane
Gram positive Gram negative
GRAM POSITIVE CELA ENVELOPE Degradative enzyme Lipoteichoic acid Peptidoglycan-tejchoic acid 倡但含飞 Cytoplasmic membrane Cytoplasm
Cytoplasm Lipoteichoic acid Peptidoglycan-teichoic acid Cytoplasmic membrane GRAM POSITIVE CELL ENVELOPE Degradative enzyme
Peptidoglycan single macromolecule highly cross-linked surrounds cell provides rigidity
Peptidoglycan • single macromolecule • highly cross-linked • surrounds cell • provides rigidity