Molecular Flashcards

1
Q

Helicase ทำหน้าที่อะไร

A

Unwinds DNA template at replication fork

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2
Q

DNA topoisomerasesมีหน้าที่อะไร

A

Remove supercoils

(Fluoroquinolone inhibit TOP II and TOP IV

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3
Q

Telomeraseทำหน้าที่อะไร

A

Adds DNA(TTAGGG) to 3’ ends to avoid loss of genetic material

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4
Q

DNA ligase ทำหน้าที่อะไร

A

Links DNA(joins Okazaki fragments)

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5
Q

เรียงลำดับความรุนแรงของชนิด mutation in DNA

A

Silent<

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6
Q

Rifampin มี mech.อย่างไร

ใช้ในโรคอะไร

A
  • Inhibit DNA-dependent RNA polymerase

- TB infection

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7
Q

ยาใดบ้างที่ inhibit pyrimidine synthesis

A

-Methotrexate,trimethoprim,pyrimethamine
:inhibit dihydrofolate reductase
-5-fluorouracil(5-FU):inhibit thymidylate synthesis

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8
Q

ยาใดบ้างที่ inhibit purine synthesis

A
  • 6-mercaptopurine(6-MP):inhibit de novo purine synthesis

- mycophenolate and ribavirin:inhibit inosine monophosphate dehydrogenase

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9
Q

ยาใดบ้างที่ inhibit purine and pyrimidine synthesis

A

Hydroxyurea:inhibit ribonucleotide reductase

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10
Q

Intron กับ Exonsคือะไร

A
  • Exons contain the actual information coding for protein

- Introns are intervening noncoding segments of DNA

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11
Q

ขาดHGPRTทำให้เกิดโรคอะไร

และอาการเป็นอย่างไรและรักษาอย่างไร

A

-Lesch-Nyhan syndromeจาก defective purine salvage
-เกิดHyperuricemia
Gout
Pissed off
Retardation
DysTonia
-treatment:allopurinol, febuxostat

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12
Q

Adenosine deaminase deficiency ทำให้เกิดอะไร

A

เพิ่มdATP->lymphotoxicity

เกิดsevere combined immunodeficiency

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13
Q
Gene เหล่านี้ทำหน้าที่อะไร
RB gene
p53 gene
BCL-XL gene
MDR-1 gene
A

RB gene: tumor suppressor gene
p53 gene: tumor supressor gene
BCL-XL gene(BCL-2 family): anti-apoptotic gene
MDR-1 gene: ดื้อยาchemotherapy

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