title: Heterogeneity of poly(A) sites in the granule-bound starch synthase I gene in sweet potato (Ipomoea batatas (L.) Lam.).
abstract: Analysis of the cDNAs of granule-bound starch synthase I (GBSSI) in sweet potato indicated that six types of GBSSI were expressed in the tuberous root, and that the poly(A) sites in GBSSI were highly heterogeneous. Several poly(A) sites were located within or downstream of the polymorphic TA repeat. The GBSSI gene has a 23-nucleotide A-rich sequence in the 3' untranslated region, and we believe that the main near-upstream elements of the poly(A) signal are included in this sequence.
authors.affiliation: National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto, Japan. tkimura@affrc.go.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Kimura
authors.forename: Akira
authors.initials: A
authors.lastname: Saito
mesh_terms: D000595:Amino Acid Sequence / Q000235:genetics; D001483:Base Sequence; D018740:Genetic Heterogeneity; D027723:Ipomoea batatas / Q000201:enzymology* / Q000235:genetics; D008969:Molecular Sequence Data; D018517:Plant Roots / Q000201:enzymology / Q000235:genetics; D035281:Plant Tubers / Q000201:enzymology / Q000235:genetics; D011061:Poly A / Q000235:genetics*; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D013214:Starch Synthase / Q000235:genetics*
chemical_list: D011061:Poly A; C434607:granule-bound starch synthase I; D013214:Starch Synthase