14 - regulacija G- Flashcards

1
Q

kateri sta dve skupini produktov genov tra, ki sodelujejo pri konjugaciji

A
  1. skupina DTR: sodelujejo pri prenosu DNA in podvajanju
  2. skupina MPF: sodelujejo pri vzpostavitvi stika, nastanku in vzdrževanju paritvenega para
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2
Q

kateri geni so potrebni za konjugacijo plazmida F

A
  • geni za uravnavanje
  • geni za sintezo in izgradnjo pilov
  • geni za metabolizem DNA
  • geni za stabilizacijo prenosa
  • geni za površinsko izključitev
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3
Q

kateri geni so potrebni za uravnavanje

A

traJ, finO in finP

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4
Q

katere načine uravnavanja poznamo

A
  • s kompleksom finOP
  • Cpx
  • temperatura
  • SfrB
  • IHF
  • stacionarna faza
  • globularni regulatorji (FNR, ppGpp)
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5
Q

finOP

A

negativno vpliva na traJ (prepreči translacijo za TraJ)

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6
Q

stacionarna faza

A

negativno vpliva na promotor
konjugacija ne poteka

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7
Q

Cpx

A

pozitivno vpliva

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8
Q

temperatura

A

pozitivno vpliva

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9
Q

kako raziskujemo izražanje genov

A
  • izbira gena, kateri ima največji potencial za uravnavanje
  • iščemo nukleotidno zaporedje
  • in vitro poskusi
  • in vivo poskusi
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10
Q

metode za določanje ali so regulatorji pozitivni ali negativni

A
  • beta-galaktozdazni test (B-gal)
  • kompetitivni RT - PCR
  • EMSA
  • odtis proteina z DNazo l
  • mutiranje promotorja gena traJ
  • frekvenca konjugativnega prenosa
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11
Q

beta galaktozidazni test

A
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12
Q

EMSA

A
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13
Q

kompetitivni RT-PCR

A
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14
Q

odtis z DNAzo l

A
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15
Q

mutiranje vezavnih mest

A
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16
Q

konjugativni prenosi

A