NUCLEIC ACIDS

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NUCLEIC ACIDS
Z 3
14.4.2005

• Šárka Dvoráková
• Michaela Mášová

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• Linear polymers consisting of repeating nucleotid
  units linked by phosphodiester bonds
• Types of Nucleic acids
• - DNA ( 2- deoxy- ß-D-deoxyribonucleic
  acid )
• - RNA ( ß -D ribonucleic acid )

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• Structure components of nucleic acids
• - bases
• - sugar
• - phosphate ester

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Bases and sugars
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Difference

• RNA
• bases adenine
• guanine
• thymine
• cytosine
• sugar D ribose
• phosphate ester

• DNA
• bases adenine
• guanine
• uracile
• cytosine
• sugar 2 deoxy-D ribose
• phosphate ester

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Structure of DNA

• The structure of DNA consists of two
  polynucleotide strains wound around each other to
  form a right handed double helix
• There are two types of base pair in DNA
• A T ( adenine-thymine)
  
• G C ( guanine cytosine)
  The structure of DNA and the functions
  of
• 
  gene described Watson
  and Crick (1953)
• 
  

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Structure of RNA

• RNA exists as a single strand
• RNA can coil back on itself
• Types of RNA
• messenger mRNA carry the information for the
  primary structure of proteins
• ribosomal rRNA part of the protein synthesis
  apparatus
• transfer tRNA activates AA and recognizes
  codons in mRNA

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Functions of organism

• RNA
• - several types of RNA responsible for the
  synthesis of the enzymes, structural proteins,
  and other polypeptides
• DNA
• stores information that conrols all cellular
  processes (replication)
• - conducting transcription for genesis of a
  complementary molecul of RNA

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SOURCE

• Some information from lecture on Biochemistry.
• Some information from internet.