Genetics RNA classes

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Author:
princesspink21
ID:
110051
Filename:
Genetics RNA classes
Updated:
2011-10-18 20:41:03
Tags:
RNA
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Description:
RNA classes
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  1. mRNA
    • messenger RNA
    • copies gene data to ribosome
    • typically encodes polypeptide
    • coding function
  2. tRNA
    • transfer RNA
    • Binds proper AA to mRNA
    • Functions in protein synthesis
    • Non-coding RNA
  3. rRNA
    • Ribosomal RNA
    • component of the ribosome
    • helps to form peptide bond
    • non-coding RNA
  4. hnRNA
    • heterogeneous nuclear RNA
    • Eukaryotes: Primary transcript
    • Processed to mature mRNA
    • Coding Function
  5. snRNA
    • small, nuclear RNA
    • component of spliceosome
    • involved in RNA processing
    • non-coding RNA
  6. Catalytic
    • catalytic RNA (ribozyme)
    • exception to enzyme = protein
    • modify themselves or substrate
    • important in early evolution of life
    • non-coding RNA
  7. Template
    • direct synthesis of DNA
    • example: RNA in telomerase
    • adds DNA to chromosome ends
    • non-coding RNA
  8. Genomic
    • genetic material of some viruses
    • functions to store information
    • coding function
  9. Viroid
    • small, naked, infectious RNA
    • lacks protein coat found in virus
    • does not code for protein
    • produces disease in plants
    • non-coding RNA
  10. miRNA
    • micro RNA (recent discovery)
    • very small (20-25 nucleotides)
    • variety of cellular functions
    • non-coding RNA
  11. siRNA
    • small interfering RNA (recent discovery)
    • very small (20-25 nucleotides)
    • repressor of gene function
    • non-coding RNA
  12. gRNA
    • guide RNA (recent discovery)
    • role in RNA editing processes
    • non-coding RNA

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