Multiple cloning site (MCS)

Definition

A multiple cloning site (MCS) is a short segment of DNA containing multiple unique restriction sites. It is used in genetic engineering to facilitate the insertion of foreign DNA into a plasmid vector.

5 Must Know Facts For Your Next Test

1. An MCS is also known as a polylinker.
2. The presence of multiple restriction sites allows for flexibility in choosing enzymes for cloning.
3. MCSs are typically found within plasmid vectors used for gene cloning.
4. Insertion into an MCS can disrupt reporter genes, allowing for selection of recombinant clones.
5. MCSs enable researchers to insert DNA fragments without altering the function of the vector.

Review Questions

Related terms

Plasmid Vector: A small circular DNA molecule used as a tool for molecular cloning.

Restriction Enzyme: An enzyme that cuts DNA at specific recognition nucleotide sequences.

Recombinant DNA:

DNA molecules formed by laboratory methods combining genetic material from different sources.