6/5 Flashcards
DNA Pol 3
Main DNA polymerase in procaryotes
- Synthesizes leading and lagging strand in 5’ to 3’ direction
- Has 3’-5’ proofreading capabilities and expnuclease activity
DNA Pol1
-After primer has been synthesized has 5’-3’ exonuclease activity that replaces RNA primer with DNA
DNA pol2
-Sythesizes over defects during stationary phase
DNAase
GAS allows spread and puss formatons
LPS
outer membrane then space, then peptidoglycan then periplasmic space then membrane
Tata and CAAT
Promotors that bind transcriptin factors and allow for transcription to procede
-Transcripton factors allow for RNA pol binding
RNA Pols
I is for rRNA
II is for mRNA
III is for tRNA
Insulins
- Detmir and glargine are long
- NPH is middle
- Regular is short
- Rest are ultrashort: Lispro, aspart
Glitazones
- Sensitize tissues to insulin by activating PPAR gamma
- Can cause heart failure and hepatotox
Exenatide and tides
-Are GLP-1 analogs that increase secreion of insulin post meal and inhibit glucagon
Sitapliptin
DPP4 prevent the degredation of GLP-1 and increae insulin post meal
Fructose metabolism
- Fructokinase phosphorylates nd traps fructse
- Aldolase B cleaves to ente glycolysis at DHAP and glyceraldehyde
- Defect in fructokinase is benign and causes fructosuria
- Defect in aldolase B is severe and causes jaundice and hepatitis
Non latose fermentors
Motile are salmonella dna proteus, make H2S
-Nonmotile are shigella and yernsinia, don’t make H2S
DNA viruses
Most are naked except
- Herpes (Nuclear membrane)
- Hep B (hepadenomvirus)
- Pox (Complex lipid envelope)
RNA VIruses
- Most are enveloped except
- Picorno
- Reo (Rota) (DS)
- Calici (norwalk)
- Hepe (Hep E)
Operons
Liniear regulation
- Promotor is upstream of operon which can bind repressor and shut off transcription
- Promotor binds activators that increase transcription