Block 3 - Lec 35 - Regulating RNA Synthesis Flashcards
(27 cards)
decreased transcription of an RNA that has already initiated transcription;
the decrease results from modulation of termination.
attenuation
a gene that encodes the amino acid sequence of a polypeptide. Often
equivalent to a cistron.
structural gene
a protein that binds to DNA to increase the transcription of a gene or group of
related genes.
activator
a small molecule that causes induction, often by binding a repressor.
inducer
a DNA region which regulates transcription of adjacent gene(s). An operator
is a regulatory gene.
operator
genes of diauxy were mapped into the blank operon
lac
time during exponential multiplying of growth in diauxy that uses glucose
first log phase
second log phase in diauxy was due to the use of blank as a fuel
lactose
lac operon consists of a blank and blank genes
promoter, structural
lac operon showed blank which broke lactose into glucose and galactose
beta galactose
in the lac operon, this transports lactose into cell
permease
gene that turns off transcription
repressor
messenger RNA that can encode more than one polypeptide separately within the same RNA molecule
polycistronic
the model of how a lac operon works
double negative
the amount of galactosidase fits the blank and growth condition (big table of nonsense)
genotype
lac activation goes along with catbolite blank
repression
the blank protein acts positively and turns out to be a dimer to bind the symmetrical dna sequence
CRP
CRP and repressor are blank proteins and bind to blank in DNA
symmetrical, palindromes
repression and attenuation uses the blank operon
trp
repression is the single blank compared to inductions blank
single negative, double negative
trp operon has blank starting before blank ends
translation, transcription
trp operon is for blank control
volume
high levels of tryptophan causes transcription to blank
not even start
low levels of tryptophan causes transcription to blank
start and keep going
