What is eukaryotic transcription?

In all living cells, transcription is a process that produces RNA sources that are coded on the basis of DNA found in cells. RNA is then used to create proteins in the cytoplasm of the cell. In various organisms, the transcription process may vary slightly. This is especially true when looking at eukaryotes and prokaryotes; The term eukaryotic transcription describes the process inside the eukaryot. Eukaryotes have organelles bound to a membrane such as core and mitochondria, while Prokaryota is not. This is one of the first and most visible differences between prokaryotic and eukaryotic transcription, as it determines where the process occurs. Eukaryotic transcription occurs in the nucleus and mitochondria, because there is DNA in these types of cells. As a result, translationcur translation after transcription in eukaryots, as RNA must be transported to the core cytoplasm.

Almost all eukaryotic DNA is found in the core, so it is the primary location for most of the transcription. When DNA is transcribed, koThe specific area of ​​the DNA is unfolded, so it is one -time. This area is called Cistron and finally encodes the protein after transcription and translation. In most cases, there are three enzymes involved in eukaryotic transcription versus only one for prokaryotic transcription.

enzymes involved in transcription are called RNA polymerase and three different are RNA polymerase I (RNA POL I), RNA polymerase II (RNA POL II) and RNA polymerase III (RNA POLI). The RNA type determines which of the three polymerases is used during transcription. RNA POL I Transcres Ribosomal RNA (RRNA), which is used to create ribosomes in the cytoplasm and is a place where translation occurs. Messenger RNA, sources that provide protein code are rewritten by RNA POL II. The third enzyme, RNA Pol III, rewrites DNA into transmission RNA (TRNA), which is used to transport the appropriate amino acids into ribosomes to create protein praseNů.

During eukaryotic transcription, one of the RNA polymerases moves along a single chain of DNA. As is the case, it creates a source of RNA by adding RNA nucleotide, which is complementary to the one that is located in the DNA spring. The RNA nucleotides are freely floating in the core and are attracted to the only undisputed spring spring. Once the Cistron is overwritten, the new RNA spring must pass pores in the nuclear membrane, so that the cytoplasm may translate.