Microbial genetics Ch.8 Flashcards
A group of proteins that inhibit or kill other bacterial species
Bacteriocins
A physical mutagen whose energy induces adjacent thymine(or cytosine) bases in the DNA to covalently link together forming dimers
Ultraviolet(UV) light
A type of repair mechanism where the damaged DNA is excised, missing nucleotides are replaced with the correct ones, and the strand is sealed into the rest of the polynucleotide.
Excision repair
A type of repair mechanism where the DNA polymerase adds bases and proofreads its work on the way
Mismatch repair
Antibiotic that binds to the RNA polymerase so that transcription cannot initiate
Rifampin
Antiviral agent which is a base analgo that can substitue for guanine during viral replication
Acyclovir
Base analog that bears a close chemical resemblance to thymine
5-bromouracil
Block further replication, cuasing the replication factories to dissociate
Terminator proteins
Carry plasmids for the production of antibiotics
Streptomyces
Chemical mutagen that converts DNA’s adenine bases to hypoxanthine bases
Nitrous acid
Detect any mismatched nucleotides, remove the incorrect nucleotide in the pair, and add the correct nucleotide.
DNA polymerase III and DNA ploymerase I
DNA replication starts at the
oriC
Enzyme that carries out transcription
RNA polymerase
Genes encoding the toxins responsible for anthrax are carried on
A plasmid
Inhibit chain elongation by binding to the 50S subunit.
Chloramphenicol and erythromycin