Diacylglycerol

Diacylglycerol
glycerol substituted on the 1 and 2 hydroxyl groups with long chain fatty acyl residues. Dag is a normal intermediate in the biosynthesis of phosphatidyl phospholipids and is released from them by phospholipase c activity. Dag from phosphatidyl inositol polyphosphates is important in signal transduction. Elevated levels of dag in membranes activate protein kinase c by stabilising its catalytically active complex with membrane bound phosphatidyl serine and calcium.

Freshwater Communities & Plankton

Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..

Freshwater Ecology

Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..

New Zealand’s Biodiversity

Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..

Genetics and Evolution

Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

Lotic Communities & Animals

A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..

Polyploidy