Polyadenylation site heterogeneity in mRNA encoding the precursor of the barley toxin β-hordothionin

Hernandez Lucas, Carlos and Royo, Joaquin and Paz Ares, Javier and Ponz Ascaso, Fernando and García Olmedo, Francisco and Carbonero Zalduegui, Pilar (1986). Polyadenylation site heterogeneity in mRNA encoding the precursor of the barley toxin β-hordothionin. "Febs Letters", v. 200 (n. 1); pp. 103-106. ISSN 0014-5793. https://doi.org/10.1016/0014-5793(86)80519-1.

Description

Title: Polyadenylation site heterogeneity in mRNA encoding the precursor of the barley toxin β-hordothionin
Author/s:
  • Hernandez Lucas, Carlos
  • Royo, Joaquin
  • Paz Ares, Javier
  • Ponz Ascaso, Fernando
  • García Olmedo, Francisco
  • Carbonero Zalduegui, Pilar
Item Type: Article
Título de Revista/Publicación: Febs Letters
Date: May 1986
ISSN: 0014-5793
Volume: 200
Subjects:
Freetext Keywords: (Barley endosperm)Plant toxinβ-HordothioninCleavage/poly(A) sitecDNA sequence
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Biotecnologia [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Two cDNA clones, pTH2 and pTH3, encoding the precursor of the barley toxin β-hordothionin have been identified and their nucleotide sequences determined. These sequences are identical, except that pTH2 is 22 bp longer than pTH3 at the 5'-end and that the cleavage/poly(A) site of the mRNA represented by pTH3 is 4 positions further downstream from the single 5'-AAUAAA-3' polyadenylation signal than that of the pTH2 mRNA. In contrast, the cleavage/poly(A) site of the α-hordothionin mRNA is 30 positions downstream from a second polyadenylation signal. The deduced amino acid sequence of the β-hordothionin precursor differs from that of α-hordothionin at 13 out of 127 positions.

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