F1. PENTOSE PHOSPHATE PATHWAY process... Flashcards

1
Q

step 1:

  1. these reactant/s…
  2. are bounded to an enzyme…
  3. to form these products…

the enzyme of this step tranfers a ____ from the first reactant will be transfered to the second reactant.

A
  1. G6P & NADP+.
  2. G6P dehydrogenase.
  3. 6-phosphoglucono-d-lactone & NADPH.

hydride ion.

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2
Q

Step 2:

  1. this reactant…
  2. is converted to…
  3. using the rxn of…
  4. with the enzyme…
A
  1. 6-phosphoglucono-d-lactone.
  2. 6-phosphogluconate.
  3. hydrolysis.
  4. 6-phosphogluconolactonase.

even without the enzyme, this rxn proceeds quickly.

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3
Q

step 3:

  1. the reactant…
  2. produced…
  3. using the rxn of…
  4. with the enzyme…
A
  1. 6-phosphogluconate.
  2. more NADPH, five-carbon sugar, & ribulose 5-phosphate.
  3. decarboxylation.
  4. 6-phosphogluconate dehydrogenase.
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4
Q

metabolite used by the cell as the basis for nucleotide synthesis

A

ribulose 5-phosphate
???

correct me, please XD

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5
Q

RIBULOSE 5-PHOSPHATE (Ru5P):
1. is converted to ____ by ____.
or
2. is converted to ____ by ____.

A
  1. RIBOSE 5-PHOSPHATE by ribulose 5-phosphate isomerase.
  2. XYLULOSE 5-PHOSPHATE by ribulose 5-pepimerase.
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6
Q
  • used for NUCLEOTIDE synthesis.
  • NUCLEIC ACID production.
  • important for GENERAL METABOLISM.
A

RIBOSE 5-PHOSPHATE.

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7
Q
  • a PRECUSOR for NUCLEOTIDE SYNTHESIS.
  • important for the production of other SUGARS & METABOLLIC INTERMEDIATES.

examples of metabollic intermediates…

A

fructose 6-phosphate.
glyceraldehyde 3-phosphate.

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