Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At1g68570	May act as an efflux-type nitrite transporter.	A nitrite transporter associated with nitrite uptake by higher plant chloroplasts.; 2007; DOI: 10.1093/pcp/pcm073; PMID: 17566055; https://pubmed.ncbi.nlm.nih.gov/17566055/
Arabidopsis	At3g54140	Peptide transporter.	AtPTR1, a plasma membrane peptide transporter expressed during seed germination and in vascular tissue of Arabidopsis.; 2004; DOI: 10.1111/j.1365-313x.2004.02224.x; PMID: 15500465; https://pubmed.ncbi.nlm.nih.gov/15500465/ | AtPTR1 and AtPTR5 transport dipeptides in planta.; 2008; DOI: 10.1104/pp.108.123844; PMID: 18753286; https://pubmed.ncbi.nlm.nih.gov/18753286/
Arabidopsis	At2g02040	Peptide transporter.	No verified direct reference in this release
Arabidopsis	At1g62200	Protein NRT1/ PTR FAMILY 8.5.	No verified direct reference in this release
Arabidopsis	At5g01180	Peptide transporter.	AtPTR1 and AtPTR5 transport dipeptides in planta.; 2008; DOI: 10.1104/pp.108.123844; PMID: 18753286; https://pubmed.ncbi.nlm.nih.gov/18753286/
Arabidopsis	At1g22550	Protein NRT1/ PTR FAMILY 5.16.	No verified direct reference in this release
Arabidopsis	At1g72120	Protein NRT1/ PTR FAMILY 5.14.	No verified direct reference in this release
Arabidopsis	At1g22540	Protein NRT1/ PTR FAMILY 5.10.	No verified direct reference in this release
Arabidopsis	At5g46050	Peptide transporter involved in stress tolerance in seeds during germination and in defense against virulent bacterial pathogens.	Structural and functional characterization of AtPTR3, a stress-induced peptide transporter of Arabidopsis.; 2005; DOI: 10.1007/s00894-005-0257-6; PMID: 15889294; https://pubmed.ncbi.nlm.nih.gov/15889294/ | AtPTR3, a wound-induced peptide transporter needed for defence against virulent bacterial pathogens in Arabidopsis.; 2007; DOI: 10.1007/s00425-006-0451-5; PMID: 17143616; https://pubmed.ncbi.nlm.nih.gov/17143616/