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Original Articles

Heterogeneity of Poly(A) Sites in the Granule-Bound Starch Synthase I Gene in Sweet Potato (Ipomoea batatas (L.) Lam.)

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Pages 667-669 | Received 13 Oct 2009, Accepted 08 Dec 2009, Published online: 22 May 2014
 

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.

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