Final answer:
The Gram reaction of the source bacterium is NOT a part of the naming convention for restriction enzymes. Names include the source bacterium's genus, strain, specific epithet, and Roman numerals for discovery order.
Step-by-step explanation:
The part of the name of a restriction enzyme that is NOT included is D) the Gram reaction of the source bacterium. Restriction enzymes are named based on their source bacteria following a specific naming convention that reflects their biological origin but not the Gram stain characteristics.
Enzyme names usually consist of:
- A) the genus of the source bacterium
- B) the strain of the source bacterium
- C) Roman numerals to indicate its order of discovery
- E) the specific epithet of the source bacterium
These components combine to create a unique name which allows scientists to easily reference and categorize the different restriction enzymes. An example provided is 'EcoRI', derived from Escherichia coli and identifying the specific strain and order of discovery.
A restriction enzyme is a type of protein produced by bacteria that can recognize specific DNA sequences and cut the DNA at those sequences. The name of a restriction enzyme typically includes the three-letter abbreviation of the bacterial species from which it is derived, the genus of the source bacterium, the strain of the source bacterium, and the specific epithet of the source bacterium. Roman numerals indicating the order of discovery may also be included in the name. However, the Gram reaction of the source bacterium is not a part of the name of a restriction enzyme. The Gram reaction refers to a characteristic staining reaction used to classify bacteria into Gram-positive and Gram-negative based on the properties of their cell walls.