What is function plastocyanin?
Plastocyanin is a 10 kD blue copper protein which is located in the lumen of the thylakoid where it functions as a mobileelectron carrier shuttling electrons from cytochromef to P700 in Photosystem I.
What is the structure of plastocyanin?
Plastocyanin (PC) is a β-sheet protein (Figure 1) with a Cu atom that acts as the redox center. The Cu atom is coordinated to four amino acid residues (H87, H37, S84, and M92) in a distorted tetrahedral geometry.
What is plastocyanin in biology?
Plastocyanin is a copper-containing protein that plays a role in the electron transport process associated with photosynthesis. It serves as an electron transfer agent between the cytochrome complex which follows Photosystem II and the entry point to Photosystem I of the non-cyclic electron transfer process.
Is plastocyanin in electron transport chain?
Plastocyanin is a component of the electron transport chain of PS I. This protein has a molecular weight of <10 kDa and contains one Cu atom per molecule. There are 3 to 4 molecules of plastocyanin per 1,000 molecules of chlorophyll (Sandmann and Böger, 1983).
What element is present in plastocyanin?
Plastocyanin is a copper-containing protein that mediates electron-transfer. It is found in a variety of plants, where it participates in photosynthesis.
Where is plastocyanin present in thylakoid?
thylakoid lumen
Plastocyanin is a soluble copper-containing protein present in the thylakoid lumen, which transfers electrons to photosystem I.
How many electrons does plastocyanin carry?
one-electron carrier
Plastocyanin, or PC, is a one-electron carrier, soluble protein similar to cytochrome c in the mitochondria.
Does plastocyanin contain copper?
a copper-containing plastocyanin and a cytochrome bf complex act as conduits of reducing equivalents from photosystem II to photosystem I. 164 The plastocyanin is a type I copper protein, which is a unique class of copper protein that is characterized by a unique EMR spectrum.
Is plastocyanin water soluble?
A copper-containing protein called plastocyanin (PC) carries electrons at one point in the electron transport chain. PC molecules are water soluble and can move through the inner space of the thylakoids, carrying electrons from one place to another.
Is plastocyanin reduced?
Plastocyanin (Cu2+Pc) is reduced (an electron is added) by cytochrome f according to the following reaction: Cu2+Pc + e− → Cu+Pc.