What is hairpin loop in transcription?

A hairpin loop is an unpaired loop of messenger RNA (mRNA) that is created when an mRNA strand folds and forms base pairs with another section of the same strand. The resulting structure looks like a loop or a U-shape.

What is a stem loop in RNA?

Stem-loop is an essential unit of the structure of single stranded RNA or DNA. A stem-loop consists of a stem, double helix, and a loop which links the stem. The length of the loop is typically 3–8. Tetraloops, stem-loops with four nucleotides in the loop, are frequently found in RNA.

Which of the following has a hairpin structure?

Explanation: The loop of Henle or Henle’s loop is a hairpin-like structure present between Proximal Nephron (PCT) and Distal Nephron (DCT) The loop of Henle has two limbs – the descending limb and the ascending limb.

How are RNA hairpin turns related to termination?

How are RNA hairpin turns related to termination in E. coli? The turns are formed from complementary base pairing and cause separation of the RNA transcript and RNA polymerase. What is responsible for termination of transcription in eukaryotic protein-coding genes?

What makes a hairpin stable?

Thus the stability of an RNA hairpin depends on the closing base pair. The hairpin with a GA mismatch that is formed by GGCGUAAUAGCC is more stable than the corresponding hairpin with an AA mismatch. Thus hairpin stability also depends on loop sequence.

Which of the following part is hairpin shaped in nephron?

The loop of Henle
Explanation: The loop of Henle or Henle’s loop is a hairpin-like structure present between Proximal Nephron (PCT) and Distal Nephron (DCT) The loop of Henle has two limbs – the descending limb and the ascending limb.

What is a hairpin loop in RNA?

A hairpin loop is an unpaired loop of messenger RNA (mRNA) that is created when an mRNA strand folds and forms base pairs with another section of the same strand. The resulting structure looks like a loop or a U-shape. Hairpins are a common type of secondary structure in RNA molecules.

What is the role of RNA polymerase in transcription initiation?

Transcription Initiation in Prokaryotes Elongation RNA polymerase adds ribonucleotides in 5’ to 3’ direction. RNA polymerase catalyzes the following reaction: NTP + (NMP)n (NMP)n+1 + PPi DNA Mg++ RNA polymerase Termination Termination of transcription occurs beyond the coding sequence of a gene.

Which strand of DNA is used as a template for transcription?

• Transcription is catalyzed by RNA polymerase which makes RNA using DNA as a template. • The strand of DNA which is transcribed is the template/sense/non-coding strand in 3’-5’ direction. • The other strand is called non sense/non template/coding strand which is in 5’-3’ direction.

What is RNA synthesis?

• RNA synthesis (transcription) is a transfer of the information from the DNA where it is stored into RNA which can be transported and interpreted • Three Major Classes of RNA These are synthesized by transcription of the appropriate genes and are involved in protein synthesis. 1) mRNA- carries the message from the DNA to the ribosome.