Damage leads to the proteolytic destruction of a transcriptional repressor (the LexA repressor) that controls expression of genes involved in the SOS response, including those for DinB, UmuC, and UmuD, the inactive precursor for UmuD0.

TLS Online TPP Program

#Id: 451

#Unit 2. Cellular Organization

Nucleosomes that contain linker H1 histones are referred to as chromatosomes.

TLS Online TPP Program

#Id: 3393

#Unit 3. Fundamental Processes

Because of its high error rate, translesion synthesis (like NHEJ) can be considered a system of last resort. It enables the cell to survive what might otherwise be a catastrophic block to replication, but the price that is paid is a higher level of mut

TLS Online TPP Program

#Id: 3737

#Unit 10. Ecological Principles

Local site richness, called alpha diversity or α diversity

TLS Online TPP Program

#Id: 5865

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 3668

#Unit 3. Fundamental Processes

The protein-coding region(s) of each mRNA is composed of a contiguous, non-overlapping string of codons called an open reading frame (commonly known as an ORF).