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Cell Biology 4770 > The Nucleus > Flashcards

The Nucleus Flashcards

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AP® Biology flashcards Biology 101 flashcards
0
Q

H-NS

A

Histone-like nucleoid structuring protein; abundant nucleoid-associated protein

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1
Q

HUα, HUβ

A

Abundant nucleoid-associated protein

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2
Q

IHF

A

Integration host factor; abundant nucleoid-association protein

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3
Q

Gyrase

A

DNA supercoiling

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4
Q

Topoisomerase IV

A

DNA supercoiling; possible role in decatenation (removing interlinks between sister chromosomes)

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5
Q

Topoisomerase I

A

DNA supercoiling

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6
Q

MukB

A

Chromosome condensation

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7
Q

MukE

A

Chromosome condensation

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8
Q

MukF

A

Chromosome condensation

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9
Q

RNA polymerase

A

Transcribing RNA polymerase may be a major source of restraints on DNA structure

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10
Q

spoIIIE

A

moves the new copy of the chromosome to one end of the cell so that it ends up in the spore

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11
Q

oriC

A

The origin of replication (part that winds up in the new spore)

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12
Q

terC

A

terminator of replication (part that stays in original cell)

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13
Q

SMC proteins

A

structural maintenance of chromosomes

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14
Q

Chromosome domains

A

The region where each particular chromosome resides in the nucleus.

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15
Q

Interchromosomal domains

A

Area between chromosomes

16
Q

Nucleolus

A

Site for rRNA production

Ribosomal RNA

17
Q

Speckles

A

Contain all the RNA splicing enzymes

18
Q

Name some other nuclear subcompartment

A
  1. ) Cajal bodies
  2. ) Gemini bodies
  3. ) PML bodies
19
Q

NPC

A

Nuclear pore complex

20
Q

FG repeats

A

Phenylalanine-glycine

21
Q

NLS

A

Nuclear localization signals

Karyopherin family of proteins

22
Q

NES

A

Nuclear export proteins

23
Q

Crm1

A

Most common exportin protein

24
Q

Ran GEF

A

Guanine Nucleotide Exchange Factor

25
Q

Transport through NPC is considered what kind of transport?

A

Facilitated diffusion. Area of high concentration to area of low concentration.

Cell Biology 4770 (5 decks)

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