Lecture 12 - Rearrangement Stage of Calvin Cycle

Question 1

Step 1

Answer 1

Glyceraldehyde 3-P and dihydroxyacetone P -> fructose 1,6-bisP -> fructose 6-P

Question 2

Enzymes of step 1

Answer 2

Aldolase and fructose 1,6-bisphosphatase

Question 3

Cofactor of step 1

Answer 3

Cofactor for fructose 1,6-bisphosphatase is H2O -> Pi

Question 4

Step 2

Answer 4

Fructose 6-P and glyceraldehyde 3-P -> erythrose 4-P and xylulose 5-P

Question 5

Enzyme of step 2

Answer 5

Transketolase

Question 6

Cofactor of step 2

Answer 6

TPP

Question 7

Step 3

Answer 7

Erythrose 4-P and dihydroxyacetone P -> sedoheptulose 1,7-bisP -> sedoheptulose 7-P

Question 8

Enzymes of step 3

Answer 8

Aldolase and sedoheptulose 1,7- bisphosphatase

Question 9

Cofactor of step 3

Answer 9

Cofactor for sedoheptulose 1,7-bisphosphatase is H2O -> Pi

Question 10

Step 4

Answer 10

Sedoheptulose 7-P and glyceraldehyde 3-P -> ribose 5-P and xylulose 5-P

Question 11

Is step 1 reversible?

Answer 11

No

Question 12

Is step 2 reversible?

Answer 12

Yes

Question 13

Is step 3 reversible?

Answer 13

No

Question 14

Is step 4 reversible?

Answer 14

Yes

Question 15

Enzyme of step 4

Answer 15

Transketolase

Question 16

Cofactor of step 4

Answer 16

TPP

Question 17

Step 5 (final step)

Answer 17

2 xylulose 5-P and 1 ribose 5-P -> ribulose 5-P