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BIO-ORGANIC CHEMISTRY
THE USES OF SYNTHETICS
OLIGONUCLEOTIDES NOTES
WELL EXPLAINED STEP BY
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,BIO OGRANIC CHEMISTRY CLS570
Uses of Synthesized
Oligonucleotides
Chemically synthesized oligonucleotides have lot of
functions.
1- Single stranded hybridization oligonucleotide probes
(20- to 40mers) can be formulated by deducing the
codons from the amino acid sequence of a protein and
then used to screen a genomic library for the gene.
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Nucleotide Sequences
Deduced from Amino Acid
Sequences
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Example A shows one possible nucleotide
sequence for a three amino acid
sequence
Uses of Synthesized
Oligonucleotides
Since the actual codons representing a conserved amino
acid sequence are unknown because of codon
redundacy, a single arbitrary synthetic probe may not
contain sufficient complementary bases to produce
significant hybridization with a heterologus sequence.
For this reason, a set of mixed probes is often used to
screen a genomic library.