Two major classes of actin-nucleating proteins:

1. Formins nucleate the assembly of unbranched filaments 

2. Arp2/3 complex nucleates the assembly of branched actin networks

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#Section 2: General Biology

The venoms of poisonous snakes contain (among other things) a class of enzymes known as phospholipases, enzymes that cause the breakdown of phospholipids

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#Section 2: General Biology

Phosphatidylglycerol, cardiolipin, and phosphatidylinositols all are anionic phospholipids

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#Section 2: General Biology

Diphosphatidylglycerol or Cardiolipin are synthesized within the mitochondria

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#Section 2: General Biology

In cardiolipin, two phosphatidic acids share a single glycerol (R1 and R2 are fatty acyl groups).

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Sphingolipids contain a single fatty acid, in amide linkage to the sphingosine backbone.

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#Section 2: General Biology