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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 24
pubmed:dateCreated
2007-12-6
pubmed:abstractText
In animals and yeast, CLASP proteins are microtubule plus-end tracking proteins (+TIPS) involved in the regulation of microtubule plus-end dynamics and stabilization. Here we show that mutations in the Arabidopsis CLASP homolog result in various plant growth reductions, cell form defects and reduced mitotic activity. Analysis of Arabidopsis plants that carry a YFP:AtCLASP fusion construct regulated by the AtCLASP native promoter showed similarities to the described localization of the animal CLASP proteins, but also prominent differences including punctate and preferential localization along cortical microtubules. Colocalization studies of YFP:AtCLASP and CFP:EB1b also showed that AtCLASP is enriched at the plus ends of microtubules where it localizes behind the AtEB1b protein. Moreover, AtCLASP overexpression causes abnormal cortical microtubule bundling and array organization. Cortical microtubule arrays have evolved to be prominent in plants, and our findings suggest that plant CLASP proteins may have adopted specific functions in regulating cortical microtubule properties and cell growth.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0021-9533
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
120
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4416-25
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
CLASP localizes in two discrete patterns on cortical microtubules and is required for cell morphogenesis and cell division in Arabidopsis.
pubmed:affiliation
University of Cologne, Botanical Institute III, Gyrhofstr. 15, 50931 Cologne, Germany. vkirik@stanford.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.