Prokaryotic transcription shares many similarities with eukaryotic transcription. However, prokaryotic transcription does not process RNA transcripts before transcription. They also use a single type of RNA polymerase for transcription unlike eukaryotes. Transcription occurs in the cytoplasm, unlike in eukaryotes. 

RNA Transcription in Prokaryotes

Ribosomal RNAs or rRNAs make up about 50% of the ribosome. They are structural or enzymatic and are important in forming the ribosome to be used for translation. They are also a product of transcription.

rRNA

Transfer RNAs or tRNAs translate the mRNA code to the corresponding amino acids by binding to the specific codons. There are many types depending on the species. They are also a product of RNA transcription.

tRNA

Messenger RNA (mRNA) is one product of transcription. It has the genetic information needed to synthesize proteins during translation.

mRNA

While RNA Transcription is different in key ways between prokaryotes and eukaryotes, the end products are nucleic acids. These are: 
- mRNA
- tRNA
- rRNA

University of Wisconsin - Madison

Transcription is the process of transcribing the genetic information of DNA into RNA transcripts. This transcript is mobile and is a copy of DNA with RNA nucleotides. This process is largely conserved in prokaryotes and eukaryotes with some significant differences between them.

Transcription

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

The steps of RNA transcription are shared between eukaryotes and prokaryotes. The steps of RNA Transcription are:

1. Initiation
2. Elongation
3. Termination

The Steps of RNA Transcription

RNA Polymerase transcribes RNA transcripts from DNA templates in transcription. There are several types in eukaryotes, while prokaryotes use one type of RNA Polymerase.

RNA Polymerase

End Products of RNA Transcription

Promoter sequences are DNA sequences that define where transcription of a gene by RNA polymerase begins. Transcription factor activators can also interact with this sequence to activate transcription. Promoter sequences are typically located directly upstream of the genes they regulate. 

Promoter

  While RNA Transcription shares many of the same enzymes and components with other organisms, here we designate that differences in RNA transcription in the domains of life. 

- Prokaryotic RNA Transcription
- Eukaryotic RNA Transcription

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