Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g33520	Mediates copper transfer across the plastid envelope.	Biochemical characterization of AtHMA6/PAA1, a chloroplast envelope Cu(I)-ATPase.; 2011; DOI: 10.1074/jbc.m111.241034; PMID: 21878617; https://pubmed.ncbi.nlm.nih.gov/21878617/
Arabidopsis	At5g21930	Mediates copper transfer across the chloroplast thylakoid membrane.	No verified direct reference in this release