Plastocyanin
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Plastocyanin is a copper-containing protein that mediates electron-transfer. It is found in a variety of plants, where it participates in photosynthesis. The protein is a prototype of the blue copper proteins, a family of intensely blue-colored metalloproteins. Specifically, it falls into the group of small type I blue copper proteins called "cupredoxins".
Key facts
- Protein family.image
- File:Plastocyanin-from-3BQV-3D-cartoon-balls.png
- Protein family.caption
- Phormidium laminosum plastocyanin, .
- Protein family.InterPro
- IPR002387
- Protein family.Symbol
- Plastocyanin
- Protein family.CDD
- cd04219
- Protein family.CATH
- 3BQV
- Protein family.SCOP
- 3BQV
- Protein family.below
- UniProt Family
via Wikipedia infobox
Research
1,416 papers- Plastocyanin: structural and functional analysis.Journal of bioenergetics and biomembranes · 1994
- Plastocyanin is the long-range electron carrier between photosystem II and photosystem I in plants.Proceedings of the National Academy of Sciences of the United States of America · 2020
- Plastocyanin and Cytochrome f Complex Structures Obtained by NMR, Molecular Dynamics, and AlphaFold 3 Methods Compared to Cryo-EM Data.International journal of molecular sciences · 2024
- Expression of the plastocyanin gene PETE2 in Camelina sativa improves seed yield and salt tolerance.Journal of plant physiology · 2023
- Plastocyanin cytochrome f interaction.Biochemistry · 1989
via PubMed
~8 min read
Encyclopedic overview
7 sectionsContents
- Function
- Structure
- Reactions
- Entatic state
- In the ocean
- References
- Further reading
Plastocyanin is a copper-containing protein that mediates electron-transfer. It is found in a variety of plants, where it participates in photosynthesis. The protein is a prototype of the blue copper proteins, a family of intensely blue-colored metalloproteins. Specifically, it falls into the group of small type I blue copper proteins called "cupredoxins".
== Function == In photosynthesis, plastocyanin transfers an electron from the cytochrome f of the cytochrome b6f complex, to the P700+ from photosystem I. Cytochrome b6f complex and photosystem I are both membrane-bound proteins with residues exposed on the thylakoid lumen. Cytochrome f acts as an electron donor, while P700+ accepts electrons from reduced plastocyanin.
Excerpted from Wikipedia’s “Plastocyanin” article, available under the CC BY-SA 4.0 licence.