23 - PEPTIDES Flashcards

1
Q

what are the obstacles to RNA therapeutics

A
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2
Q

what is the orientation and stereocemistry
of amino acids

A

all have an L configuration
all S except cysteine

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3
Q

pKa of the amino and carboxyl groups of amino acids

A
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4
Q

what AAs are the main constituents of collagen

A

glycine
proline and hydroxyproline
hydroxyproline is made by in vivo oxidation of proline, which requires vitamin C

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5
Q

how is an aldol reaction catalysed by proline?

A

2021 nobel prise in chemistry

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6
Q

what groups need to be protected so that condensation of peptide synthesis happens as desired

A

one AA:
carboxy activated
amino protected
other AA:
carboxy protected

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7
Q

what are protecting groups for carboxylic acids

A
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8
Q

what are protecting groups for amines

A
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9
Q

how is fluorenemethyloxycarbonyl (Fmoc) removed?

A
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10
Q

what is the tert-butoxycarbonyl (t-Boc) group and how is it removed?

A
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11
Q

how does solid phase synthesis of a peptide happen?

A
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12
Q

mechanism of DCC reaction

A

condensing reagent required for the reaction

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13
Q

solid phase synthesis of nucleic acids, proteins and oligosaccharides and what needs to be controlled

A
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14
Q

what is the general strategy for the solid phase synthesis of oligosaccharides

A
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