Term
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Definition
Enzymes that cleave lipids
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Term
| What is the classes of phospholipapses? |
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Definition
A1 – cleave first fatty acid
A2 – cleave second fatty acid
C – cleave head with phosphate
D – cleave bear head group
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Term
| What is the mode of action of phospholipapse A2? |
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Definition
| Phosphatidylcholine → free fatty acid + LysoPC . Fatty acid connects to the hormone response (Jasmonic acid) → gene expression |
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Term
| What is the mode of action of phospholipase C? |
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Definition
Phosphatidylinositol → DAG + IP3 .
Phosphatidylinositol is a clear signal lipid. It contains sugar and phosphogroup.
Activation state – creation of PIP2, activation of GTP → sugar into cytosol → activate lipid activating channels. No IP present – channels are closed.
If we have DAG and Ca2+ → activation of PKC (activated only if previous path is activated) |
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Term
| What is the mode of action of phosphotidase D? |
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Definition
Phosphatidylcholine → Phophatidate + (choline) . PLD for activation requires Ca2+ and CalB. No indication, that cholin give signal
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Term
| Describe the mechanism of leaf opening |
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Definition
bulliform cells (open or close leaves) → pump in ions → water into the cells → expenditure of the cells → leaf is open. This process could be dependent from ATP!
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Term
| Describe the mechanism of stomata opening |
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Definition
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