HOME >> BIOLOGY >> NEWS
Inhibition Of A Novel Gene Involved In Phosphorylating Starch In TransgenicPotato Tubers Leads To The Repression Of Cold Induced Sweetening

Scientists at the Max Planck Institute of Molecular Plant Physiology in Golm, Germany, have isolated a novel gene that is responsible for the phosphorylation of starch. The effects which occur if the expression of this gene is inhibited are described in the May issue of Nature Biotechnology.

Starch is composed of amylose and amylopectin, which are slightly or more highly branched glucose polymers. In addition, amylopectin can, depending on the plant organ where it is manufactured, contain different levels of phosphate monoesters. The phosphate content in potato tubers is exceptionally high as compared with other plant storage organs. Starch biosynthesis is accomplished by different forms of starch synthase which polymerize the glucose monomers using ADP-glucose, and isoforms of branching enzyme which introduce the branch points. Other enzymes are needed to determine the final starch structure, e.g. the presence of a debranching enzyme is a prerequisite to synthesize the semi-crystalline starch granules in contrast to non-crystalline glycogen, which accumulates in eukaryotes other than plants, in bacteria, or in mutants of different plant species lacking this enzyme.

Even though many starch biosynthetic enzymes are known, it has never been possible to synthesize semi-crystalline glucans in vitro, nor has it been explained how the phosphate monoesters are incorporated into starch. Furthermore, it is not clear at the moment which enzymes are responsible for the breakdown of starch in vegetative plant organs. In order to address these open questions in starch metabolism, researchers working in Jens Kossmanns in the department headed by Lothar Willmitzer at the Max Planck Institute of Molecular Plan
'"/>

Contact: Jens Kossmann
Kossmann@Mpimp-Golm.MPG.de
+49-331-9772-784
Max-Planck-Gesellschaft
14-May-1998


Page: 1 2 3 4

Related biology news :

1. Inhibition of cathepsin proteases inhibits tumor formation in transgenic mice
2. Inhibition of insulin-like growth factor receptor-1 as promising anticancer therapeutic
3. Inhibition of Borrelia burgdorferi protein may reduce Lyme disease transmission
4. Competitive Inhibition May Enhance Safety Of Minimally Processed Fruits And Vegetables
5. Novel IBD therapeutic approaches reported from Washington Univ., Barcelona, LSU at APS meeting
6. Novel therapeutic bortezomib moves to phase II trial in lung cancer patients
7. Novel approaches to current cellular therapies continue progress toward disease prevention
8. Novel therapies show promise against myeloid leukemia
9. Novel sensors help clear the air
10. Fox Chase Cancer Center study: Novel DNA-repair gene mutation can cause resistance to cancer drugs
11. Novel proteins designed that block inflammation regulator associated with rheumatoid arthritis

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:11/14/2019)... ... November 13, 2019 , ... ... Robert Peterson, RAC , a regulatory affairs and program management executive with more ... medical device industries, has joined the firm as an Expert Consultant. , ...
(Date:11/12/2019)... ... November 12, 2019 , ... ... proposals from nonprofit U.S. universities and research institutions for its Instrumentation Grant ... of up to $1.2 million per site for the acquisition of instrumentation, development ...
(Date:11/7/2019)... ... November 07, 2019 , ... R3 Stem Cell is now offering ... rest of 2019. The code to use during checkout is FIFTYOFF and applies to ... the nation’s leader in regenerative therapies with over 12,000 successful stem cell procedures performed ...
Breaking Biology News(10 mins):
(Date:11/5/2019)... ... 05, 2019 , ... Focal Healthcare , an innovator ... Fusion Bx 2.0 prostate fusion biopsy solution. By combining information from multiparametric MRI ... give urologists across Europe the ability to perform targeted transrectal and transperineal prostate ...
(Date:11/2/2019)... ... October 31, 2019 , ... ... pharma artificial intelligence pioneer tellic. drug360 brings tellic’s expertise in biomedical language ... allows researchers to quickly uncover relationships between genes, diseases, variants, phenotypes, and other ...
(Date:10/29/2019)... ... October 29, 2019 , ... ... its Silver sponsorship and cold chain validation workshop at the Biomanufacturing World Summit ... San Diego, California. , The Biomanufacturing World Summit brings together pharmaceutical ...
(Date:10/22/2019)... ... ... Catalent, a global leader in clinical supply services, today announced that Ann ... a panel session titled “Cell and Gene Therapy Logistics” at the upcoming Health and ... Oct. 28-30, 2019. , The panel session, on Wednesday, Oct. 30 at 8:30 a.m., ...
Breaking Biology Technology:
Cached News: