What protein unwinds and opens up DNA for replication?

What protein unwinds and opens up DNA for replication?

helicase

What kinds of proteins are involved during the formation of the replication fork?

At the replication fork, the events taking place are helicase action, binding of single-strand binding proteins, primer synthesis, and synthesis of new strands.

Which proteins are present at the eukaryotic replication fork?

Replication Factor C (RFC) One of the key proteins involved in loading the replicative polymerases to create the replication fork is replication factor C (RFC), a complex of five subunits (p140, p40, p38, p37, and p36) that is conserved in all eukaryotes (for review see 42).

Which proteins are important for creating and maintaining a replication fork?

In addition to primase, replicative polymerases, and helicases, the DNA replication fork requires the use of accessory proteins to facilitate efficient initiation and replication fork progression. The cooperative protein complexes that participate in DNA replication are known as the replisome (Figure 2).

What is mode of replication in E coli?

DNA is not replicated conservatively in E. coli but it is replicated semi-conservatively as out of the two strands of the daughter DNA, one strand comes from the parent DNA. Thus, the mode of DNA replication in E. coli is semi-conservative and bidirectional.

Which Strand has Okazaki fragments?

On the leading strand, DNA synthesis occurs continuously. On the lagging strand, DNA synthesis restarts many times as the helix unwinds, resulting in many short fragments called “Okazaki fragments.” DNA ligase joins the Okazaki fragments together into a single DNA molecule.

Are codons read from 5 to 3?

Multiple codons can code for the same amino acid. The codons are written 5′ to 3′, as they appear in the mRNA.

Is mRNA translated from 5 to 3?

All mRNAs are read in the 5´ to 3´ direction, and polypeptide chains are synthesized from the amino to the carboxy terminus. Each amino acid is specified by three bases (a codon) in the mRNA, according to a nearly universal genetic code.

What are the 3 stop codons?

Each three-letter sequence of mRNA nucleotides corresponds to a specific amino acid, or to a stop codon. UGA, UAA, and UAG are stop codons.

How many codons are needed to specify three amino acids?

Three codons

How many bases are needed to make 3 amino acids?

nine nucleotide bases