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Biology

Dissertations

Theses/Dissertations

2011

Phospholipases

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Functional Characterization Of Putative Non-Specific Phospholipase C (Npc) In Arabidopsis Thaliana, Carlotta Antonetta Peters Sep 2011

Functional Characterization Of Putative Non-Specific Phospholipase C (Npc) In Arabidopsis Thaliana, Carlotta Antonetta Peters

Dissertations

Abstract Phospholipases are enzymes that hydrolyze phospholipids. In terms of the position of bond hydrolysis, phospholipases are classified into four major types: phospholipase C (PLC), phospholipase D (PLD), phospholipase A1 (PLA1) and phospholipase A2 (PLA2). PLC hydrolyzes phospholipids at the first phosphodiester bond, producing diacylglycerol (DAG) and a phosphorylated head group. Based on substrate specificity, PLC is divided into two distinctively different groups: phosphoinositide-specific phospholipase C (PI-PLC) and non-specific phospholipase C (NPC). There are six members of the NPC family in Arabidopsis, designated NPC1 through 6 that bears sequence homology to bacterial phosphatidylcholine hydrolyzing PLC (PC-PLC). However, their function remains …