Transcription
Transcription is the synthesis of RNA from a DNA template. It consists of three main steps:-
RNA is transcribed from DNA by enzymes called RNA polymerases. RNA is central to protein synthesis. Here, a type of RNA called messenger RNA carries information from DNA to structures called ribosomes. These ribosomes are made from proteins and ribosomal RNAs, which come together to form a molecular machine that can read messenger RNAs and translate the information they carry into proteins.
The transcriptome is the collection of RNA molecules that results from transcription.
The transcription of a gene is initiated by the promoter region of DNA. Promoter regions are located near the genes they transcribe
- Initiation - binding of RNA polymerase to double-stranded DNA, RNA polymerase binds at a sequence of DNA called the promoter
- Elongation - this involves the development of a short stretch of DNA that is transiently single-stranded
- Termination - the recognition of the transcription termination sequence and the release of RNA polymerase
RNA is transcribed from DNA by enzymes called RNA polymerases. RNA is central to protein synthesis. Here, a type of RNA called messenger RNA carries information from DNA to structures called ribosomes. These ribosomes are made from proteins and ribosomal RNAs, which come together to form a molecular machine that can read messenger RNAs and translate the information they carry into proteins.
The transcriptome is the collection of RNA molecules that results from transcription.
The transcription of a gene is initiated by the promoter region of DNA. Promoter regions are located near the genes they transcribe
