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NUCLEIC ACIDS

Z 3. 14.4.2005. NUCLEIC ACIDS. Šárka Dvořáková Michaela Mášová. Linear polymers consisting of repeating nucleotid units linked by phosphodiester bonds Types of Nucleic acids: - DNA ( 2- deoxy- β -D-deoxyribonucleic acid ) - RNA ( β -D –ribonucleic acid ) .

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NUCLEIC ACIDS

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  1. Z 3 14.4.2005 NUCLEIC ACIDS Šárka Dvořáková Michaela Mášová

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

  3. Structure components of nucleic acids : - bases - sugar - phosphate ester

  4. Bases and sugars

  5. RNA bases: adenine guanine thymine cytosine sugar: D –ribose phosphate ester DNA bases: adenine guanine uracile cytosine sugar: 2 –deoxy-D –ribose phosphate ester Difference

  6. 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)

  7. 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 recognize codons in mRNA

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

  9. SOURCE • Some information from lecture of Biochemistry. • Some information from internet.

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