The Main Components of CRISPR Anatomy Include

Question

The main components of CRISPR anatomy include
A) methylation sites on palindromic sequences.
B) int genes with att sites for homology.
C) inverted repeats and genes encoding transposase.
D) short direct repeats, spacers, and genes encoding cas proteins.
E) cell surface receptors.

Accepted Answer

The main components of CRISPR anatomy include short direct repeats, spacers, and genes encoding cas proteins. This is the basic structure of the CRISPR-Cas system, which plays a role in adaptive immunity in bacteria and archaea. The cas genes encode proteins that are involved in cutting and processing the spacers, which are short sequences of DNA that have been acquired from foreign genetic elements such as viruses. The direct repeats are identical sequences that flank the spacers, and they are thought to be involved in the recognition and targeting of foreign DNA.