MIcrobiology Unit 4 Flashcards

Penicillins

(B-lactams)
Cell wall synthesis, inhibits penicillin-binding proteins, bactericidal

Cephalosporins

(B-lactams)
Cell wall synthesis, inhibits linking enzymes, bactericidal

Vancomycin

Cell wall synthesis, inhibits cross linking of glycan chains, bactericidal

Bacitracin

Cell wall synthesis, interferes with transport of PTG precursors, bactericidal

Isoniazid

...

Ethambutol

...

Aminoglycosides

Protein synthesis, irreversibly bind to the 30S subunit, batericidal

Tetracyclines

Protein synthesis, binds to to 30S subunit, bateriostatic

Macrolides

Protein synthesis, bind to the 50S subunit, bacteriostatic

Lincosamides

Protein synthesis, bind to 50S subunit, bacteriostatic

Streptogramins

Protein synthesis, bind to 50S subunit (2 parts), bacteriostatic

Chloramphenicol

Protein synthesis, binds to the 50S subunit, bacteriostatic

Oxazolidinones

Protein synthesis, binds to 50S subunit, bacteriostatic

Rifamycins

Nucleic acid synthesis, block prokaryotic RNA polymerase, bactericidal

Quinoles*****

Nucleic acid synthesis, ,bactericidal

Sulfonamides

Metabolic pathway, competes to form dihydropteroic acid, bacteriostatic

Trimethoprim

Metabolic pathway, interferes with activity of another enzyme, bacteriostatic

Polymixin

Membrane synthesis, disrupts membranes of Gram-negative, bacteriostatic

Polyenes

membrane integrity, binds to and inhibits ergosterol

Azoles

inhibits the fungal cytochrome P-450-dependent enzyme lanosterol 14-a-demethylase

Allylamines

inhibits squalene epoxidase

Echinocandins

inhibit the synthesis of b-(1,3)-glucans

Flucytosine

inhibits RNA functions

Griseofulvin

inhibits fungal growth

Neutralizing antibodies

Attachment inhibitor, passive immunization for hepatitis B and rabies

Receptor antagonists

Attachment inhibitor, peptide analogues of the cell receptor or viral
attachment protein that competitively block interactions

Hydrophobic amines, Amantadine Rimantadine

Fusion inhibitors, neutralize compartments preventing acidification
and membrane fusion
High resistance, not very useful

Acyclovir (ACV)

Nucleoside inhibitor, interfere with function of nucleic acids,
distort the shapes of nucleic acid molecules and prevent further replication

Azidothymidine (AZT)

Nucleotide inhibitor, interfere with function of nucleic acids,
distort the shapes of nucleic acid molecules and prevent further replication

Protease inhibitors

works by slipping into the hydrophobic active site of the enzyme and
inhibits its action

Integrase inhibitors

Raltegavir

Neuraminidase inhibitors

act by inhibiting the functioning of the influenza virus neuraminidase

Zanamivir

act by inhibiting the functioning of the influenza virus neuraminidase

Osteltamivir

act by inhibiting the functioning of the influenza virus neuraminidase

Reverse-transcriptase inhibitors

...