Cloned .alpha.-glucosidase from barley

Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Hydrolase

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435201, 435210, 435 691, 4353201, 4352523, 536 232, C12N 924, C12N 944, C12N 120, C07H 2104

Patent

active

057632529

ABSTRACT:
A cDNA clone from barley, pAGL.2737, SEQ ID NO: 3, which encodes the enzyme .alpha.-glucosidase, is disclosed. A vector and microbial host containing a DNA sequence coding for the expression of barley .alpha.-glucosidase, and a DNA construct comprising a DNA sequence coding for the expression of barley .alpha.-glucosidase, together with a promoter located 5' to the DNA coding sequence and a 3' termination sequence, are also disclosed.

REFERENCES:
Tibbot et al (1996) Plant Mol. Biol. 30:229-241. "Molecular Cloning and Characterization of a Giberellin-Inducible, Putative .gamma.-Glucosidase From Barley".
Henson, C.A., and R.W. Skadsen, "Improved Starch Hydrolysis Using Barley Alpha-Gucosidase," Grant Application to Midwest Plant Biotechnology Consortium (1992).
Hoefsloot, L.H., et al., "Primary Structure and Processing of Lysosomal .alpha.-glucosidase: Homology with the Intestinal Sucrase-Isomaltase Complex," The EMBO J., 7:1697-1704 (1988).
Kinsella, B.T., et al., "Primary Structure and Processing of the Candida tsukubaensis .alpha.-glucosidase: Homology with the Rabbit Intestinal Sucrase-Isomaltase Complex and Human Lysosomal .alpha.-glucosidase," FEBS, (1991). Eur J Biochem 202:657-664.
Martiniuk, F., et al., "Sequence of the cDNA and 5'-Flanking Region for Human Acid .alpha.-Glucosidase, Detection of an Intron in the 5' Untranslated Leader Sequence, Definition of 18-bp Polymorphisms, and Differences with Previous cDNA and Amino Acid Sequences," DNA and Cell Biol., 9:85-94 (1990).
Naim, H.Y., et al., "Striking Structural and Functional Similarities Suggest that Intestinal Sucrase-Isomaltase, Human Lysosomal .alpha.-Glucosidase and Schwanniomyces occidentalis Glucoamylase are Derived from a Common Ancestral Gene," FEBS 294:100-112 (1991).
Newman, T., "380 Arabiodopsis thaliana cDNA Clone 38A2T7," DNA Sequence Accession No. T04333, Unpublished (1993).
Sun, Z., and C.A. Henson, "Degradation of Native Starch Granules by Barley .alpha.-Glucosidases," Plant Physiol., 94:320-327 (1990).
Sun, Z., and C.A. Henson, "A Quantitative Assessment of the Importance of Barley Seed .alpha.-Amylase, .gamma.-Amylase, Debranching Enzyme, and .alpha.-Glucosidase in Starch Degradation," Arch. Biochem. Biophys., 284:298-305 (1991).
Svensson, B., "Regional Distant Sequence Homology Between Amylases, .alpha.-Glucosidases and Transglucanosylases," FEBS Letters, 230:72-76 (1988).
Tibbot, B.K. and R.W. Skadsen, "Cloning of A GA.sub.3 -Responsive Alpha-Glucosidase cDNA From the Aleurone of Germinating Barley and Analysis of Its Expression," Supplement to Plant Physiology, 105 (1994).

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