ISOLATION, CHARACTERIZATION AND EXPRESSION OF A GENE CODING FOR A 2S ALBUMIN FROM BERTHOLLETIA-EXCELSA (BRAZIL NUT)

作者：GANDER ES^*; HOLMSTROEM KO; DEPAIVA GR; DECASTRO LAB; CARNEIRO M; DESA MFG

来源：Plant Molecular Biology, 1991, 16(3): 437-448.

• BERTHOLLETIA-EXCELSA
• 2S ALBUMIN GENES
• GENE REGULATION
• METHIONINE-RICH STORAGE PROTEIN
• PROMOTER

Two genes, BE2S1 and BE2S2, coding for methionine-rich albumins of Brazil nut (Bertholletia excelsa H.B.K.) have been cloned and their sequence determined. The genes are members of a multigene family and one of them, i.e. BE2S1, codes for one of the dominant 2S isoforms. Its expression is highly regulated during seed development and with respect to tissue specificity. Sequence analysis has shown that the genes contain one intron and that the promoter of BE2S1 shows a canonical TATA motif. The transcription initiation site is located 26 nucleotides downstream from the TATA box. Sequence comparison of the promoter regions of 2S genes from Brassica napus, Arabidopsis thaliana and B. excelsa revealed the presence of TGCA palindromic sequences that appear to be arranged in a 2S-specific manner.

• 出版日期1991-3