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Biology 2370 > Bacterial Regulation > Flashcards

Bacterial Regulation Flashcards

1
Q

2 approaches to regulation

A

gene regulation, enzyme/protein regulation

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2
Q

Other name for house keeping genes

A

Constitutive genes

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3
Q

Proteins synthesized when needed

A

Inducible genes, (such as catabolic genes)

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4
Q

Proteins repressed when not needed

A

Repressible genes (such as anabolic genes)

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5
Q

Catabolic genes

A

Inducible

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6
Q

Anabolic Genes

A

Repressable

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7
Q

Lac Z

A

Beta-galactosidase,

Hydrolyzes monomers

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8
Q

Lac Y

A

Lactose permease

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9
Q

Lac A

A

Acetylates galactosides with Acetyl-Coa

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10
Q

Lac operon repressor gene

A

LacL (naturally active)

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11
Q

CAP

A

Catabolite activator protein

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12
Q

CAP regulatory system

A

Cyclic AMP activated by PEP system, when no glucose present

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13
Q

mRNA attenuation

A

production of a shortened mRNA, terminated within the leader sequence

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14
Q

Negative control of the TRP operon

A

TRP repressor, tryptophan acts as a corepressor

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15
Q

Antiterminator stem loop in trp mRNA

A

2-3 stem loop

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16
Q

riboswitches

A

cis element that forms a loop in the mRNA to block access to the shine-delgarno sequence

17
Q

Regulon

A

genes or operons controlled by single regulatory protein

18
Q

Modulon

A

operon network under control of common protein (CAP system)

19
Q

Phosphorelay system

A

turn many genes on or off in response to environmental conditions

20
Q

2 parts of a Phosphorelay system

A

sensor kinase and response regulator (DNA binding protein)

21
Q

Env Z

A

sensor kinase for osmolarity

22
Q

Quorum sensing molecule for Lux operon

A

N-actyl-homoserine-lactone (AHL) binds to LuxR (Lux Activator)

23
Q

Methyl accepting chemotaxis proteins regulate what?

A

Flagellar motion (direction)

24
Q

Which protein interacts with flagella

A

CheY

Biology 2370 (11 decks)

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