Starch Branching Enzyme cDNA from Solanum tuberosum
نویسندگان
چکیده
منابع مشابه
Starch branching enzyme cDNA from Solanum tuberosum.
Starch the main storage carbohydrate in higher plants Ta& 1. Characterjstjcs of the SBE c-NA from p a t o and is composed of the two polysaccharides, amylopectin (approximately 75%) and amylose (approximately 25%). Amylopectin is a highly branched a-1,4 glucan containing a1,6 branch points, whereas amylose is composed of long, linear a-1,4 glucans, some of which have very few a-1,6 branch point...
متن کاملA cDNA encoding starch branching enzyme I from maize endosperm.
ADP-Glc pyrophosphorylase (EC 2.7.7.27), starch synthases (EC 2.4.1.21), and SBEs (EC 2.4.1.18) are the key enzymes in the pathway of plant starch biosynthesis. Starch is a polymer of Glc that exists as two fractions, amylose and amylopectin, in maize (Zea mays L.) kernel amyloplasts. The essentially linear polymer amylose contains a-1,4-linked Glc, whereas the branched polymer amylopectin cont...
متن کاملNucleotide sequence of a cDNA encoding starch-branching enzyme, or q-enzyme I, from rice endosperm.
The programmed regulation of carbohydrate-metabolizing enzymes is associated with an increase in the production of starch in rice endosperm (4, 5). The increase in starch-branching enzyme, or Q-enzyme, plays a critical role in the initiation and regulation of the biochemical process of starch accumulation in rice endosperm (4) (Table I). Q-enzyme catalyzes the synthesis of amylopectin by introd...
متن کاملSerine hydroxymethyltransferase from Solanum tuberosum.
SHMT, EC 2.1.2.1, catalyzes the interconversion of Ser and Gly accompanied by the production or consumption of one-carbon units. In leaves it is a component of the photorespiratory pathway (Keys et al., 1978). The main function of that pathway is the salvage of reduced carbon and nitrogen withdrawn from the Calvin cycle by the oxygenation of ribulose 1,5-bisphosphate. By the cooFeration of SHMT...
متن کاملIsolation of a cDNA encoding a granule-bound 152-kilodalton starch-branching enzyme in wheat.
Screening of a wheat (Triticum aestivum) cDNA library for starch-branching enzyme I (SBEI) genes combined with 5'-rapid amplification of cDNA ends resulted in isolation of a 4,563-bp composite cDNA, Sbe1c. Based on sequence alignment to characterized SBEI cDNA clones isolated from plants, the SBEIc predicted from the cDNA sequence was produced with a transit peptide directing the polypeptide in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Plant Physiology
سال: 1993
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.102.3.1053