Gram positive bacteria: Difference between revisions
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[[Bacteria|Bacteria]] can be categorised based upon their reaction to [[Gram staining|Gram stain]], which is retained by cells with a thick layer of [[Peptidoglycan|peptidoglycan]] on the outside of their cytoplasmic membrane; these cells are Gram-positive and stain purple. [[Bacteria|Bacteria]] which don't retain [[Gram staining|Gram stain]] are called [[Gram negative|Gram negative]]<ref>https://www.sciencedirect.com/science/article/pii/B9780126775303502221</ref>. | [[Bacteria|Bacteria]] can be categorised based upon their reaction to [[Gram staining|Gram stain]], which is retained by cells with a thick layer of [[Peptidoglycan|peptidoglycan]] on the outside of their cytoplasmic membrane; these cells are Gram-positive and stain purple. [[Bacteria|Bacteria]] which don't retain [[Gram staining|Gram stain]] are called [[Gram negative|Gram negative]]<ref>https://www.sciencedirect.com/science/article/pii/B9780126775303502221</ref>. | ||
Gram-positive bacteria lack an outer membrane so are, on the whole, usually sensitive to beta-lactam [[Antibiotics|antibiotics]] like [[Penicillin|penicillin]], which interfere with the production of [[Peptidoglycan|peptidoglycan]], leaving the cytoplasmic membrane exposed, and the cell susceptible to [[Lysis|lysis]]<ref>Rang, H., Ritter, H., Flower, R., Henderson, G. (2016). Rang &amp; Dale's pharmacology (Eighth ed.)</ref>. | Gram-positive bacteria lack an outer membrane so are, on the whole, usually sensitive to beta-lactam [[Antibiotics|antibiotics]] like [[Penicillin|penicillin]], which interfere with the production of [[Peptidoglycan|peptidoglycan]], leaving the cytoplasmic membrane exposed, and the cell susceptible to [[Lysis|lysis]]<ref>Rang, H., Ritter, H., Flower, R., Henderson, G. (2016). Rang &amp;amp; Dale's pharmacology (Eighth ed.)</ref>. | ||
[[Bacteria|Bacteria]] belonging to the genus ''Staphylococcus ''are Gram-positive<ref>Madigan, M., Bender, K., Buckley, D., Sattley, W., Stahl, D. (2019). Brock biology of microorganisms (Fifteenth edition, Global ed.)</ref>. | [[Bacteria|Bacteria]] belonging to the genus ''Staphylococcus ''are Gram-positive<ref>Madigan, M., Bender, K., Buckley, D., Sattley, W., Stahl, D. (2019). Brock biology of microorganisms (Fifteenth edition, Global ed.)</ref>. | ||
Latest revision as of 18:02, 15 November 2018
Bacteria can be categorised based upon their reaction to Gram stain, which is retained by cells with a thick layer of peptidoglycan on the outside of their cytoplasmic membrane; these cells are Gram-positive and stain purple. Bacteria which don't retain Gram stain are called Gram negative[1].
Gram-positive bacteria lack an outer membrane so are, on the whole, usually sensitive to beta-lactam antibiotics like penicillin, which interfere with the production of peptidoglycan, leaving the cytoplasmic membrane exposed, and the cell susceptible to lysis[2].
Bacteria belonging to the genus Staphylococcus are Gram-positive[3].
References
- ↑ https://www.sciencedirect.com/science/article/pii/B9780126775303502221
- ↑ Rang, H., Ritter, H., Flower, R., Henderson, G. (2016). Rang &amp; Dale's pharmacology (Eighth ed.)
- ↑ Madigan, M., Bender, K., Buckley, D., Sattley, W., Stahl, D. (2019). Brock biology of microorganisms (Fifteenth edition, Global ed.)