Linked Life Data

16045475

Source:http://linkedlifedata.com/resource/pubmed/id/16045475

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2005-7-27
pubmed:abstractText
A minimum of four soluble starch synthase families have been documented in all starch-storing green plants. These activities are involved in amylopectin synthesis and are extremely well conserved throughout the plant kingdom. Mutants or transgenic plants defective for SSII and SSIII isoforms have been previously shown to have a large and specific impact on the synthesis of amylopectin while the function of the SSI type of enzymes has remained elusive. We report here that Arabidopsis mutants, lacking a plastidial starch synthase isoform belonging to the SSI family, display a major and novel type of structural alteration within their amylopectin. Comparative analysis of beta-limit dextrins for both wild type and mutant amylopectins suggests a specific and crucial function of SSI during the synthesis of transient starch in Arabidopsis leaves. Considering our own characterization of SSI activity and the previously described kinetic properties of maize SSI, our results suggest that the function of SSI is mainly involved in the synthesis of small outer chains during amylopectin cluster synthesis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0960-7412
pubmed:author
pubmed:issnType
Print
pubmed:volume
43
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
398-412
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Soluble starch synthase I: a major determinant for the synthesis of amylopectin in Arabidopsis thaliana leaves.
pubmed:affiliation
Unité de Glycobiologie Structurale et Fonctionnelle, UMR8576 CNRS/USTL, IFR 118, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq Cedex, France.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't