Chapter 16: Archaea Flashcards
1
Q
Common traits of archaea
A
Ether-linked lipids
Absence of peptidoglycan
Complex RNA polymerase
2
Q
Compatible solutes
A
The internalization of solutes to prevent dehydration in halophiles
3
Q
Unsaturated lipids
A
Interspersing of alkene bonds
Hyperthermophilic adaptation
Found in methanopyrus
4
Q
Ether linkages
A
Placing oxygen atom before long chain (usually on either side)
5
Q
Large periplasm
A
Acts as insulation in hyperthermophilic environments
6
Q
Factors contributing to thermostability
A
Abundance of alpha helices
Hydrophobic protein cores
Chaperonins like thermosomes that can refold partially denatured proteins
Reverse DNA gyrases that introduce positive supercoils
Higher proportion of G-C bonds
