Blue (type 1) copper protein, plastocyanin-type (IPR001235)

Short name: Copper_blue_Plastocyanin

Overlapping homologous superfamilies

Family relationships


Blue (type 1) copper proteins are small proteins which bind a single copper atom and which are characterised by an intense electronic absorption band near 600 nm [PMID: 8035459, PMID: 8433378]. The most well known members of this class of proteins are the plant chloroplastic plastocyanins, which exchange electrons with cytochrome c6, and the distantly related bacterial azurins, which exchange electrons with cytochrome c551.

Several subclasses of the blue copper proteins, such as the amicyanins, azurins, lastocyanins and rusticyanins, have been identified. Although there is an appreciable amount of divergence in the sequences of these proteins, the copper ligand sites are conserved.

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

GO:0005507 copper ion binding
GO:0009055 electron transfer activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.