Question: Which enzyme unzips the DNA double helix?
Answer:
- DNA helicase unzips the DNA double helix during DNA replication and transcription.
- This enzyme plays a crucial role in DNA replication, transcription, and repair processes.
- DNA helicase separates the two strands of the double helix by breaking the hydrogen bonds between the base pairs of DNA.
| Enzyme:
| DNA Helicase |
| Location: | Found in the nucleus of cells |
| Function: | Unwinds and separates the DNA double helix during DNA replication, transcription, and repair processes |
| Substrates:
| Double-stranded DNA Products: Single-stranded DNA template |
| Mechanism: | Breaks hydrogen bonds between DNA base pairs to separate the strands base pairs to separate the strands |
| Associated Proteins: | Often works in coordination with other proteins such as DNA polymerase and single-stranded DNA-binding proteins |
| Significance: | Essential for DNA replication, transcription, and repair |
| Processivity: | Moves along the DNA strand, continuously unwinding the helix |
| Directionality: | Directionality: Typically moves in the 5′ to 3′ direction |
| Regulation: | Activated by binding to specific DNA sequences and interacting with other replication and transcription proteins |
| Other Names: | Helicase, DNA unwinding enzyme |
| Co-factors: | ATP (Adenosine Triphosphate) |
| Deficiency: | Defects in DNA helicase function can lead to genetic disorders and impair DNA replication and repair processes |
Important Questions about Enzymes
- Enzymes MCQs
- Inhibition in enzymes
- Which enzyme digests starch?
- Which enzyme digests protein?
- which enzyme is present in saliva?
- Which enzyme is not present in succus entericus?
- Which enzyme breaks down protein in the stomach?
- Which enzyme converts fibrinogen to fibrin?
- Which enzyme converts glucose into alcohol?
- Which enzyme digests fat?
- Which enzyme digests milk protein?
- Which enzyme is used in PCR?
- Which enzyme unzips the DNA double helix?
- Which liver enzyme increases with alcohol?
- Which enzyme cuts DNA?
- Which enzyme catalyzes the first step of glycolysis?
- Which enzyme binds DNA fragments together?
- Which enzyme transcribes DNA into RNA?
- which enzyme adds new nucleotides?
- Which enzyme digests cellulose?
- Which enzyme separates the two strands of DNA?
- Which enzyme converts carbohydrates into glucose?
- Which enzyme removes RNA primer?
- Which enzymes help in digestion?
- Which enzyme works best in acidic conditions?
- Which enzyme synthesizes tRNA?
- Which enzyme secreted by pancreas?
- Which enzyme converts maltose into glucose?
- Which vitamins work as coenzyme?