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  2. Prokaryote - Wikipedia

    en.wikipedia.org/wiki/Prokaryote

    However, prokaryotes do possess some internal structures, such as prokaryotic cytoskeletons. [59] [60] It has been suggested that the bacterial phylum Planctomycetota has a membrane around the nucleoid and contains other membrane-bound cellular structures. [61]

  3. Cell (biology) - Wikipedia

    en.wikipedia.org/wiki/Cell_(biology)

    Structure of a typical prokaryotic cell. Prokaryotes include bacteria and archaea, two of the three domains of life. Prokaryotic cells were the first form of life on Earth, characterized by having vital biological processes including cell signaling. They are simpler and smaller than eukaryotic cells, and lack a nucleus, and other membrane-bound ...

  4. Prokaryotic cytoskeleton - Wikipedia

    en.wikipedia.org/wiki/Prokaryotic_cytoskeleton

    The prokaryotic cytoskeletal elements are matched with their eukaryotic homologue and hypothesized cellular function. [1] The prokaryotic cytoskeleton is the collective name for all structural filaments in prokaryotes. [2] Some of these proteins are analogues of those in eukaryotes, while others are unique to prokaryotes.

  5. Gene structure - Wikipedia

    en.wikipedia.org/wiki/Gene_structure

    The structure of eukaryotic genes includes features not found in prokaryotes. Most of these relate to post-transcriptional modification of pre-mRNAs to produce mature mRNA ready for translation into protein. Eukaryotic genes typically have more regulatory elements to control gene expression compared to prokaryotes. [5]

  6. 16S ribosomal RNA - Wikipedia

    en.wikipedia.org/wiki/16S_ribosomal_RNA

    Molecular structure of the 30S Subunit from Thermus thermophilus. Proteins are shown in blue and the single RNA strand in a pale orange-brown colour. [1] 16S ribosomal RNA (or 16S rRNA) is the RNA component of the 30S subunit of a prokaryotic ribosome . It binds to the Shine-Dalgarno sequence and provides most of the SSU structure.

  7. Bacterial cell structure - Wikipedia

    en.wikipedia.org/wiki/Bacterial_cell_structure

    The prokaryotic cytoskeleton is the collective name for all structural filaments in prokaryotes. It was once thought that prokaryotic cells did not possess cytoskeletons , but advances in imaging technology and structure determination have shown the presence of filaments in these cells. [ 9 ]

  8. Archaea - Wikipedia

    en.wikipedia.org/wiki/Archaea

    Although archaea have only one type of RNA polymerase, its structure and function in transcription seems to be close to that of the eukaryotic RNA polymerase II, with similar protein assemblies (the general transcription factors) directing the binding of the RNA polymerase to a gene's promoter, [162] but other archaeal transcription factors are ...

  9. Prokaryotic large ribosomal subunit - Wikipedia

    en.wikipedia.org/wiki/Prokaryotic_large...

    50S, roughly equivalent to the 60S ribosomal subunit in eukaryotic cells, is the larger subunit of the 70S ribosome of prokaryotes. The 50S subunit is primarily composed of proteins but also contains single-stranded RNA known as ribosomal RNA (rRNA). rRNA forms secondary and tertiary structures to maintain the structure and carry out the catalytic functions of the ribosome.