AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
Transcription and translation example12/15/2023 Initiation of transcription: removal of sigma Through another portal in the RNA Polymerase, emerges the developing mRNA. Different from DNA base pairing, D-adenine pairs with R-uracil. Similar to DNA base pairing, cytosine-containing deoxyribonucleotides (D-cytosine) pair with guanine containing ribonucleotides (R-guanine), D-guanine pairs with R-cytosine, and D-thymine pairs with R-adenine. Once DNA is inserted in to RNA Polymerase, ribonucleotides (R-nucleotides) enter an entrance portal into the RNA Polymerase and match up with the D-nucleotides based on complementary base pairing. As the DNA is thread through the RNA Polymerase, hydrogen bonds are split between the the DNA molecule, by a zipper. After successful attachment, the sigma guides the DNA into place inside of the RNA Polymerase. Once the appropriate sigma is attached, RNA Polymerase attaches to the sigma protein. The other strand of DNA is known as the non-template (or coding) strand. Therefore, only one strand of DNA is copied, known as the template strand. While DNA is double-stranded RNA is single stranded. Transcription is the synthesis of mRNA from a DNA template. RNA editing, in which an RNA sequence is altered by a complex of proteins and a "guide RNA", could also be considered an RNA-to-RNA transfer. The enzymes that copy RNA to new RNA, called RNA-dependent RNA polymerases, are also found in many eukaryotes where they are involved in RNA silencing. RNA replication is the copying of one RNA to another. It is the process by which the genetic information from RNA will be assembled into new DNA. This is known to occur in the case of retroviruses, such as HIV, as well as in eukaryotes, in the case of retrotransposons and telomere synthesis. Reverse transcription is the transfer of information from RNA to DNA (the reverse of normal transcription). Exceptions to the Central Dogma of Molecular Biology Secondly, mRNA is “read” at a ribosome by transfer RNAs (tRNAs), which work together to assemble a specific chain of amino acids, which collectively assemble to generate a protein. The central dogma of molecular biology suggests that DNA serves as a template for the direct synthesis of a messenger RNA (mRNA) molecule, in a process known as transcription.
0 Comments
Read More
Leave a Reply. |