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The amyloplast proteome of potato tuber.
Stensballe A, Hald S, Bauw G, Blennow A, Welinder KG. Stensballe A, et al. FEBS J. 2008 Apr;275(8):1723-41. doi: 10.1111/j.1742-4658.2008.06332.x. Epub 2008 Mar 7. FEBS J. 2008. PMID: 18331355
The majority of the identified proteins had a predicted plastid transit peptide, supporting their presence in the amyloplast. ...Intriguingly, all polyphenol oxidases, a family of enolases, one transketolase, sulfite reductase, deoxynucleoside kinase-like and dihydr …
The majority of the identified proteins had a predicted plastid transit peptide, supporting their presence in the amyloplast. ...Intr …
Structural, physicochemical, and pasting properties of starches from potato plants with repressed r1-gene.
Viksø-Nielsen A, Blennow A, Jørgensen K, Kristensen KH, Jensen A, Møller BL. Viksø-Nielsen A, et al. Biomacromolecules. 2001 Fall;2(3):836-43. doi: 10.1021/bm0155165. Biomacromolecules. 2001. PMID: 11710039
The pasting properties of the transgenic starch revealed a pronounced decrease in peak viscosity and increased setback viscosity as measured using a rapid Visco analyzer. ...At very low phosphate levels (1.4 nmol of Glc-6P mg-1 of starch), the gel hardness was decre …
The pasting properties of the transgenic starch revealed a pronounced decrease in peak viscosity and increased setback viscosity as m …
The phosphorylation site in double helical amylopectin as investigated by a combined approach using chemical synthesis, crystallography and molecular modeling.
Engelsen SB, Madsen AØ, Blennow A, Motawia MS, Møller BL, Larsen S. Engelsen SB, et al. FEBS Lett. 2003 Apr 24;541(1-3):137-44. doi: 10.1016/s0014-5793(03)00311-9. FEBS Lett. 2003. PMID: 12706834
Accordingly, it is desirable to obtain a more exact description of the molecular structures of phosphorylated starch. We have determined the crystal structure of methyl alpha-D-glucopyranoside 6-O-phosphate as its potassium salt which is thought to be the starch phosphate …
Accordingly, it is desirable to obtain a more exact description of the molecular structures of phosphorylated starch. We have determi …
Functional characterization of alpha-glucan,water dikinase, the starch phosphorylating enzyme.
Mikkelsen R, Baunsgaard L, Blennow A. Mikkelsen R, et al. Biochem J. 2004 Jan 15;377(Pt 2):525-32. doi: 10.1042/BJ20030999. Biochem J. 2004. PMID: 14525539 Free PMC article.
Native GWD is a homodimer and shows a strict requirement for the presence of alpha-1,6 branch points in its polyglucan substrate, and exhibits a sharp 20-fold increase in activity when the degree of polymerization is increased from 27.8 to 29.5. ...The nucleo …
Native GWD is a homodimer and shows a strict requirement for the presence of alpha-1,6 branch points in its polyglucan substra …
Functional domain organization of the potato alpha-glucan, water dikinase (GWD): evidence for separate site catalysis as revealed by limited proteolysis and deletion mutants.
Mikkelsen R, Blennow A. Mikkelsen R, et al. Biochem J. 2005 Jan 15;385(Pt 2):355-61. doi: 10.1042/BJ20041119. Biochem J. 2005. PMID: 15361065 Free PMC article.
The potato tuber (Solanum tuberosum) GWD (alpha-glucan, water dikinase) catalyses the phosphorylation of starch by a dikinase-type reaction mechanism in which the beta-phosphate of ATP is transferred to the glucosyl residue of amylopectin. ...CD experiments provided eviden …
The potato tuber (Solanum tuberosum) GWD (alpha-glucan, water dikinase) catalyses the phosphorylation of starch by a dikinase-type re …
A novel type carbohydrate-binding module identified in alpha-glucan, water dikinases is specific for regulated plastidial starch metabolism.
Mikkelsen R, Suszkiewicz K, Blennow A. Mikkelsen R, et al. Biochemistry. 2006 Apr 11;45(14):4674-82. doi: 10.1021/bi051712a. Biochemistry. 2006. PMID: 16584202
The phosphorylation of the amylopectin fraction of starch catalyzed by the alpha-glucan, water dikinase (GWD, EC 2.7.9.4) plays a pivotal role in starch metabolism. ...Tandem repeat sequences, SBD-1 and SBD-2, of a region that is significantly similar in sequence to …
The phosphorylation of the amylopectin fraction of starch catalyzed by the alpha-glucan, water dikinase (GWD, EC 2.7.9.4) plays a piv …
A CBM20 low-affinity starch-binding domain from glucan, water dikinase.
Christiansen C, Hachem MA, Glaring MA, Viksø-Nielsen A, Sigurskjold BW, Svensson B, Blennow A. Christiansen C, et al. FEBS Lett. 2009 Apr 2;583(7):1159-63. doi: 10.1016/j.febslet.2009.02.045. Epub 2009 Mar 9. FEBS Lett. 2009. PMID: 19275898
The family 20 carbohydrate-binding module (CBM20) of the Arabidopsis starch phosphorylator glucan, water dikinase 3 (GWD3) was heterologously produced and its properties were compared to the CBM20 from a fungal glucoamylase (GA). ...
The family 20 carbohydrate-binding module (CBM20) of the Arabidopsis starch phosphorylator glucan, water dikinase 3 (GWD3) was heterologousl …
The carbohydrate-binding module family 20--diversity, structure, and function.
Christiansen C, Abou Hachem M, Janecek S, Viksø-Nielsen A, Blennow A, Svensson B. Christiansen C, et al. FEBS J. 2009 Sep;276(18):5006-29. doi: 10.1111/j.1742-4658.2009.07221.x. Epub 2009 Aug 13. FEBS J. 2009. PMID: 19682075 Review.
The clear evolutionary relatedness of CBM20s to CBM21s, CBM48s and CBM53s suggests a common clan hosting most of the known SBDs. ...Structures of CBM20s, including the first example of a full-length glucoamylase featuring both the catalytic domain and the SBD, are s …
The clear evolutionary relatedness of CBM20s to CBM21s, CBM48s and CBM53s suggests a common clan hosting most of the known SBDs. ...S …
Helix-breaking news: fighting crystalline starch energy deposits in the cell.
Blennow A, Engelsen SB. Blennow A, et al. Trends Plant Sci. 2010 Apr;15(4):236-40. doi: 10.1016/j.tplants.2010.01.009. Epub 2010 Feb 10. Trends Plant Sci. 2010. PMID: 20149714 Review.
Phosphorylation at the C-3 position of the glucose units seems to play a significant role by inducing strain in crystalline starch and resulting in helix unfolding. These findings add a new perspective on how plants increase bioavailability of this carbohydrate matr …
Phosphorylation at the C-3 position of the glucose units seems to play a significant role by inducing strain in crystalline starch an …
Repression of both isoforms of disproportionating enzyme leads to higher malto-oligosaccharide content and reduced growth in potato.
Lütken H, Lloyd JR, Glaring MA, Baunsgaard L, Laursen KH, Haldrup A, Kossmann J, Blennow A. Lütken H, et al. Planta. 2010 Oct;232(5):1127-39. doi: 10.1007/s00425-010-1245-3. Epub 2010 Aug 11. Planta. 2010. PMID: 20700743
In addition, they contained a range of malto-oligosaccharides from maltose to maltoheptaose. Plants repressed in both isoforms had chlorotic leaves and did not grow as well as either the controls or lines where only one of the isoforms was repressed. ...No translocation to …
In addition, they contained a range of malto-oligosaccharides from maltose to maltoheptaose. Plants repressed in both isoforms had ch …
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