Term
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Definition
| Ribulose 1,5 Bisphosphate carboxylase oxidase |
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Term
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Definition
| most prevalent protein on Earth. very inefficient enzyme b/c of its slow turnover rate and competing oxidase reaction. Uses Mg ion. |
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Term
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Definition
| RuBP(5C) + CO2(1C) -> (6C intermed.) -> 2 x 3-Phosphoglycerate(3C) |
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Term
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Definition
| stroma of the chloroplast/outer thylakoid membrane |
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Term
| 3 stages of the calvin cycle |
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Definition
| fixation, reduction, regeneration |
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Term
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Definition
| divalent cation stabilizes the enediolate intermediate. |
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Term
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Definition
| photorespiration. O2 forms hyperperoxide intermediate. end up with one 3-phosphoglycerate and one phosphoglycolate. phosphoglycolate is not easily metabolised. |
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Term
| glyceraldehyde-3-phosphate dehydrogenase |
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Definition
| 2 forms: one in cytosol (us NADH;gluconeogenesis) and one in chloroplast (use NADPH; calvin cycle). |
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Term
| carbon fixation enzymes using ATP and NADPH |
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Definition
ATP: phosphoglycerate kinase.
NADPH: GAP dehydrogenase |
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Term
| 2 fates for fixed carbohydrate |
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Definition
6 GAP produced: 5 go to stage 3 of calvin cycle, regeneration - make ribulose 1,5 BP.
1 goes to sugar synthesis (starch) |
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Term
| percent of light energy on leaf used to fix carbon |
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Definition
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Term
| cost to fix one molecule of CO2 |
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Definition
| 3 ATP 2 NADPH. takes 6 turns to make a 6C molecule |
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