Table 1.

Amino acids bound to the copper atom of the blue copper proteins of eukaryotic origin. Plastocyanins are also found in prokaryotes. The * indicates that crystal structures are as yet not available.

S. NO:	PROTEIN NAME	METAL BINDING ACTIVE SITES
		1	2	3	4
1	PLANTACYANIN PDB: 1F56	34 HIS	74CYS	79 HIS	84 MET
2	PLASTOCYANIN PDB: 1AG6	37 HIS	84 CYS	87 HIS	92 MET
3	CUCUMBER BASIC PROTEIN PDB: 2CBP	39 HIS	79 CYS	84 HIS	89 MET
4	STELLACYANIN1JER	46 HIS	89 CYS	94 HIS	99 GLN
5	DICYANIN	*	*	*	*
6	UMECYANIN P42849	44 HIS	85 CYS	90 HIS	95 GLN
7	UCLACYANIN	*	*	*	*
8	CUSACYANIN P00303	39 HIS	79 CYS	84 HIS	89 MET