plastocyanin

views updated May 21 2018

plastocyanin A blue copper-containing protein that is found in chloroplasts and acts as an electron carrier molecule in the light-dependent reactions of photosynthesis (see photophosphorylation). Plastocyanin consists of amino acid groups in association with a copper molecule which gives this compound a blue colour.

A Dictionary of Biology

plastocyanin

views updated May 21 2018

plastocyanin An acidic protein, containing 2 copper atoms per molecule, that acts as an electron carrier, linking photosystems I and II during photosynthesis.

A Dictionary of Plant Sciences MICHAEL ALLABY