Cell Walls and DNA stuff Flashcards by Aislinn Zink

Q

Bacteria DNA binding proteins?

A

just binding proteins :)

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Q

Archaea DNA binding proteins?

A

histones

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Q

Binding proteins vs histones?

A

NOT HOMOLGOUS

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Q

Archaea and Eukaryotes DNA proteins?

A

ARE HOMOLGOUS

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Q

OriC?

A

where replication begins in the circle

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Q

TerC?

A

where replication ends in circle

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Q

Analog of Actin??

A

MreB

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Q

Fatty acids that are good for heat?

A

saturated!

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Q

Unsaturated fatty acids are good for?

A

cold!

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Q

Archaeal lipids are linked to acids by?

A

Ether bonds

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Q

Bacteria lipids are linked to acids by?

A

Ester bonds

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Q

What do archaea have instead of fatty acids?

A

Isoprenoids

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Q

Archaeal cyclopentane rings increase with?

A

HEAT

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Q

Archaeal cyclopentane rings decrease with?

A

pH

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Q

Archaeal membrane characteristics (5)

A

ether
G1P
Have iosprenoids instead of fatty acids
Bilayer with a glycerol diether
Form cyclopentane rings

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Q

Bacteria membrane chatacteristic (4)

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A

ester
G39
Fatty acids
Layer with glycerol diester

Q

What are hopanoids?

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A

Bacteria
membrane proteins
maintain strength of cell membrane

Q

What are sterols?

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A

Eukaryotes
membrane proteins
maintain strength

Q

Isoprenes precursors to what?

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A

streols and hopaniods

Q

Bacterial Peptidogylan is made of?

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A

Nag- Nam connected by beta-1,4

amino acids are connected in D conformation

Q

What is connected by a peptide interbridge? (bac)

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A

Nam, by diagonal connections

Q

How does penicillin kill?

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A

targets peptdase, that forms inter bridges, am positive

Q

How does lysozyme kill?

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A

cleaves beta- 1,4 linkage btwn Nag- Nam

Q

Do archaea have peptidoglycan?

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A

nope, they have psudopeptidoglycan with pseudomuren

Pseudopeptidoglycan is made of?

Nag-Nat, with Beta- 1,3 linkages

What does a S-layer cover

cell membrane

Outer membrane of GN is?

asymmetrical bilayer

3 componets of LPS?

1. Lipid A 2. Core polysach 3. O- polysach