The MutT, -M, -Y system handles the consequences of oxidative damage. Major type of chemical damage is caused by oxidation of G to 8-oxo-G

TLS Online TPP Program

#Id: 6397

#Unit 2. Cellular Organization

Why is this extra control of two layers on trp operon needed?  The answer probably lies in the fact that repression of the trp operon is weak—much weaker.

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#Id: 2053

#Unit 8. Inheritance Biology

Homoplasmy- All mutated mitochondria

Heteroplasmy- wild type + mutant mitochondria

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#Id: 4548

#Unit 12. Applied Biology

Virulence Measurement

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#Id: 1969

#Unit 10. Ecological Principles

The mortality rate (qx) within each age class is estimated by the variable

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#Id: 596

#Unit 2. Cellular Organization

When DNA is extensively damaged (such as by UV light. RecA protein binds to this damaged, single-stranded DNA, activating the protein's coprotease activity. While bound to DNA, the RecA protein facilitates cleavage and inactivation of the Lex and Lambda repressor.