Microbiology 2.5 (lecture 5)
- Created by: LailaFrancis
- Created on: 17-02-23 13:27
Other questions in this quiz
2. what is released during the cross linking step
- Precursor form of the peptide has an extra L-ala
- Precursor form of the peptide has an extra D-ala
- Post form of the peptide has an extra D-ala
3. 3 structural sections in LPS:
Lipid A
Core polysaccharide
O polysaccharide.
what are the functions of lipid a
- anchored in the membrane:
Is responsible for the endotoxic activity
Very toxic to host
Released in large quantities when cells die
Consists of 6 fatty acid chains and 2 glucosamine residues - Branched and contains 9-12 sugars
Contains unusual sugar 2 keto-3-deoxy-octanate (KDO)
Core region constant for many species of bacteria - A long linear polysaccharide of 50-100 repeating saccharide units of 4-7 sugars per unit
Distinguishes serotypes of bacterial species
4. what residues does Teichoic acid contain
- glycerophosphate or ribitol phosphate residues
- peptidoglycan or ribitol phosphate residues
- glycerophosphate or peptidoglycan phosphate residues
5. 3 structural sections in LPS:
Lipid A
Core polysaccharide
O polysaccharide.
what are the functions of o antigen
- anchored in the membrane:
Is responsible for the endotoxic activity
Very toxic to host
Released in large quantities when cells die
Consists of 6 fatty acid chains and 2 glucosamine residues - A long linear polysaccharide of 50-100 repeating saccharide units of 4-7 sugars per unit
Distinguishes serotypes of bacterial species - Branched and contains 9-12 sugars
Contains unusual sugar 2 keto-3-deoxy-octanate (KDO)
Core region constant for many species of bacteria
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