Gene Details:

• Gene ID:
• Gene Symbol: HvPTR1
• Gene Name: peptide transporter1
• Genome: MorexV3_pseudomolecules_assembly
• Species: Hordeum vulgare

Functional Descriptions:

• A role for phosphorylation in the regulation of the barley scutellar peptide transporter HvPTR1 by amino acids.
• In vivo [32P]orthophosphate labelling studies of barley scutellar tissue in combination with immunoprecipitation studies using antiserum raised to HvPTR1 showed that HvPTR1 (66 kDa) is phosphorylated in the presence of amino acids.
• Immunopurified HvPTR1 was further demonstrated to be phosphorylated on serine residues. Digestion with the N-glycosidase enzyme PNGase F results in a shift in the molecular mass of the protein by 10 kDa, indicating that HvPTR1 is an N-linked glycoprotein.
• These results provide strong circumstantial evidence that HvPTR1 peptide transport activity in the germinating barley grain is regulated at the post-translational level by phosphorylation in response to rising levels of amino acids emanating from the endosperm as a result of storage protein breakdown and mobilization.

Function-related keywords:

• grain ,  transporter ,  endosperm ,  grain-protein ,  as-transport ,  glycoprotein ,  protein

Literature:

• A role for phosphorylation in the regulation of the barley scutellar peptide transporter HvPTR1 by amino acids.   DOI:  10.1093/jxb/eri149 ;  PMID:  15824072

Related News:

Gene Resources:

• NCBI ID: AV914147.1
• UniProt accessions:

Orthologs:

Sequences: