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Biochem Quiz 1
Quiz 1
22
Biology
Professional
08/30/2009

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Term
Actinomycin D
Definition
inhibits transcription
intercalates into double helix
Extremely toxic, used as cancer drug
Term
Rifampicin
Definition
Inhibits BACTERIAL RNA Polymerase II
Inhibits Prokaryotic transcription
Term
Alpha-Amanitin
Definition
Inhibits eukaryotic RNA Polymerase II
Cannot be used...Toxic
Term
What three things are needed for Transcription?
Definition
DNA
RNA Polymerase
ATP, GTP, UTP, CTP
Term
Pribnow Box
Definition
Prokaryotic Promotor
-10
Term
Start Codon
Definition
AUG
Term
Stop Codon
Definition
UGA, UAA, UAG
Term
Sigma Factor
Definition
ensures RNA Polymerase binds at promotor
Needed for initiation
NOT needed for elongation
Term
RNA Polymerase I
Definition
Nucleolus
rRNA
Term
RNA Polymerase II
Definition
Nucleoplasm
mRNA, snRNA
Does NOT bind sequence specifically
Term
RNA Polymerase III
Definition
tRNA
Term
TFIIF
Definition
Brings RNA Polymerase II to the DNA
Term
TFIIH
Definition
Phosphorylates C-terminal domain
Unwinds DNA
Allows polymerase to escape promoter and start synthesis
Term
TFIID
Definition
Binds to DNA
Has TATA Binding Protein
Term
Potential Eukaryotic Promotor Sequences
Definition
TATA Box, INR, Sp1
Term
Enhancers
Definition
position and orientation independent
Term
HATs
Definition
enhance transcription
Term
mRNA Cap
Definition
5' - 5' linkage
Protects from degradation
Term
Lariat
Definition
2' - 5' UNUSUAL LINKAGE
intron (cut out)
Term
Spliceosome
Definition
snRPs
URACIL
Term
snoRNA
Definition
rRNA Processing
Term
Improper splicing Clinical Disorder
Definition
B-thalassemia
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