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Samenvatting - Practicum: biotechnologie en biochemie, pDNA (J000496A) $7.01   Add to cart

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Samenvatting - Practicum: biotechnologie en biochemie, pDNA (J000496A)

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Volledige samenvatting van Practicum pDNA Leerpaden + powerpoints

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  • December 28, 2023
  • 3
  • 2023/2024
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Practicum pDNA


 Erfelijke informatie organisme: in DNA
o 2 ketens van nucleotiden, in een dubbele helix
verbonden via H-bruggen
o Nucleotiden opgebouwd uit nucleobasen
 Adenine (A)
 Cytosine (C)
 Guanine (G)
 Thymine (T)
o Strengen zijn complementair (AT en GC)
o Volgorde nulceotiden: soort eiwitten
 DNA bepaalt erfelijke eigenschappen
 Plasmide DNA
o Cirkelvormig dubbele streng DNA (buiten chromosomaal DNA)
o Genetische informatie tss bacteriën uitwisselen
o Plasmiden: dragen minstens 1 gen
 Gunstig voor ontvangende bacterie
 Onafhankelijk repliceren
 Origin of replication: startpunt replicatie
 Selectiemarker = gen dat resistentie verschaft tegen een bepaald
antibioticum
 Kunstmatige plasmiden
o Genetische modificaties uitvoeren
o Samengesteld uit stukken DNA die gewenste eigenschappen aan een cel kunnen
toevoegen/ kenmerken van een cel veranderen
o Bv. Gentherapie
o Wetenschappelijk onderzoek: structuren in cel
fluorescent kleuren
 Restrictie-enzymen
o Enzym dat een specifieke DNA-sequentie herkent
(recognition site) en op die plek de beide DNA-strengen
doorknipt
o Plek waar DNA opengeknipt is: ander stuk DNA
kunstmatig invoegen
 Vermeerderen pDNA in bacteriën
o Gewenste plasmide opkweken in bacteriën
 Grote hoeveelheid plasmide bekomen
 In medium met de juiste antibiotica (enkel
bacteriën met plasmide groeien)
o Na groeiperiode: bacteriën worden gelyseerd om
plasmiden te isoleren + overgaan nr. opzuivering DNA

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