Role of tomato hexose kinases

Functional Plant Biology : FPB
David Granot

Abstract

Hexose phosphorylation is an essential step of sugar metabolism. Only two classes of glucose and fructose phosphorylating enzymes, hexokinases (HXK) and fructokinases (FRK), have been found in plants. Tomato (Lycopersicon esculentum Mill.) is the only plant species from which four HXK and four FRK genes have been identified and characterised. One HXK and one FRK isozyme are located within plastids. The other three HXK isozymes are associated with the mitochondria, and the other three FRK isozymes are dispersed in the cytosol. These differences in location suggest that the cytoplasmic HXK and FRK have distinct roles to play in sugar metabolism. The specific roles of each of the HXK and FRK genes have been investigated using transgenic plants with modified expression of the genes. Sugar signalling effects were obtained with modified expression of the mitochondria associated HXK. In contrast, modified expression of the cytosolic FRK affected fructose metabolism rather than sugar signalling. Future research efforts will aim to determining the roles of specific hexose phosphorylating enzymes in tomato plants, the source of the hexose monomers to be phosphorylated, and their intracellular trafficking route.

References

Jan 1, 1980·Current Topics in Cellular Regulation·J E Wilson
Feb 1, 1995·The International Journal of Biochemistry & Cell Biology·M al-Habori
Nov 1, 1994·The Plant Cell·J C Jang, J Sheen
Jan 1, 1997·The Plant Cell·J C JangJ Sheen
Apr 1, 1997·Plant Physiology·Y KanayamaA B Bennett
May 22, 1998·Plant Physiology·Y KanayamaA B Bennett
Dec 20, 2000·Trends in Plant Science·J V Pego, S C Smeekens
Feb 13, 2001·Plant Science : an International Journal of Experimental Plant Biology·T MenuB Ricard
May 5, 2001·Plant Science : an International Journal of Experimental Plant Biology·S GonzaliA Alpi
Jun 1, 1990·Proceedings of the National Academy of Sciences of the United States of America·N S Yang, D Russell
Jan 22, 2002·Metabolic Engineering·Deborah P Delmer, Candace H Haigler
Mar 1, 1997·Plant Physiology·A. A. Schaffer, M. Petreikov
Dec 12, 2002·Phytochemistry·Huawu JiangPing Wu
Jun 11, 2003·The Plant Journal : for Cell and Molecular Biology·Marcelo A GermanDavid Granot
Oct 14, 2003·FEMS Yeast Research·David GranotEdan Dor-Hefetz
Oct 21, 2003·Planta·Sean E WeiseThomas D Sharkey
Feb 24, 2004·Molecular and Cellular Biochemistry·Judit Ovádi, Valdur Saks
Jan 26, 2005·Biochemical Society Transactions·F Rolland, J Sheen
Sep 19, 2006·Brazilian Journal of Medical and Biological Research = Revista Brasileira De Pesquisas Médicas E Biológicas·G L RezendeA Galina
Aug 1, 1994·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Y Eshed, D Zamir
May 1, 1992·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Y EshedD Zamir

❮ Previous
Next ❯

Citations

Dec 23, 2014·Journal of Plant Biology = Singmul Hakhoe Chi·Jen Sheen
Oct 16, 2015·The New Phytologist·Ofer SteinDavid Granot
Jan 26, 2017·Frontiers in Plant Science·Ofer SteinDavid Granot
May 29, 2007·Planta·Hila Damari-WeisslerDavid Granot
Feb 1, 2012·The Plant Journal : for Cell and Molecular Biology·Melissa RoachTotte Niittylä
Jan 22, 2011·PLoS Genetics·Young-Hee Cho, Sang-Dong Yoo
Jan 1, 2008·The Arabidopsis Book·Matthew RamonJen Sheen
Jun 7, 2013·The Plant Journal : for Cell and Molecular Biology·Gilor KellyDavid Granot
Mar 25, 2017·Plant & Cell Physiology·Jörg HirscheThomas Roitsch
Dec 3, 2013·Journal of Experimental Botany·David GranotRakefet David-Schwartz
Aug 16, 2018·Royal Society Open Science·Yunpeng CaoYongping Cai
Nov 16, 2017·International Journal of Molecular Sciences·Yuan YaoJian-Chun Guo
May 13, 2017·International Journal of Molecular Sciences·Meng-Ting GengJian-Chun Guo
Apr 9, 2017·The Plant Journal : for Cell and Molecular Biology·Gilor KellyDavid Granot
Jun 6, 2020·Frontiers in Plant Science·Weijie XuDeqiang Zhang
Sep 4, 2021·Plant Physiology and Biochemistry : PPB·Farhat AbbasYanping Fan
Oct 17, 2008·Phytochemistry·David Granot

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.