”type”:”entrez-nucleotide”,”attrs”:”text”:”AY172957″,”term_id”:”27728676″,”term_text”:”AY172957″AY172957). untranslated leader sequence of tobacco etch virus; SP, endoplasmic reticulum signal peptide; KDEL, ER retention signal; 35S-T, terminator of Cauliflower mosaic virus 35S gene.