One important aspect of this quality is the starch property which is related to the waxy protein or GBSSI (granule-bound starch synthase
), that is the enzyme key for the synthesis of amylase in wheat seeds.
Waxy (Wx) genes produce waxy proteins that are also known as Granule-bound starch synthase (Vrinten and Nakamura, 2000).
2009 Amylose content and starch properties generated by five variant Wx alleles for granule-bound starch synthase in common wheat (Triticum aestivumL.).
Granule-bound starch synthase
: structure, function, and phylogenetic utility.
(2003) and Tetlow (2006) concluded that amylose content in cereal was mostly controlled by granule-bound starch synthase
(GBSS), whereas amylopectin generally was synthesized by the coordinated actions of soluble starch synthases (SS), branching enzymes (BE), and debranching enzymes (DBE).
These loci encode isoforms of the enzyme granule-bound starch synthase
(GBSS, EC 126.96.36.199), also known as the "waxy" protein.
The reason for these differences lies in a DNA sequence of a gene that encodes for an enzyme called granule-bound starch synthase
(GBSS), which produces the amylose component of starch.
Expression, organization and structure of the genes encoding the waxy protein (granule-bound starch synthase
) in wheat.
Waxy wheats carry three nonfunctional (null) alleles (Wx-A1b, Wx-B1b, and Wx-D1b) at the genetic loci encoding the enzyme granule-bound starch synthase
(GBSS, EC 188.8.131.52) (Nakamura et al., 1995).
Waxy protein or granule-bound starch synthase
I (GBSSI), is a key enzyme for amylose synthesis in the wheat endosperm .
Intrada is void of any wheat-rye translocation, and it has the wx-B1 null allele at the granule-bound starch synthase