ArticleThe Plant cell1995
End-to-end annealing of plant microtubules by the p86 subunit of eukaryotic initiation factor-(iso)4F.
Article in The Plant cell, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
5 citing papers in PubMed, 22 citations in OpenAlex.
- Proteomic Analysis of Microtubule Interacting Proteins over the Course of Xylem Tracheary Element Formation in Arabidopsis.The Plant cell · 2015Article
- Plant Translation Factors and Virus Resistance.Viruses · 2015Review
- A 90-kD phospholipase D from tobacco binds to microtubules and the plasma membrane.The Plant cell · 2001Article
- Actin depolymerization affects stress-induced translational activity of potato tuber tissuePlant physiology · 1998Article
- The plant translational apparatus.Plant molecular biology · 1996Review
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The p86 subunit of eukaryotic initiation factor-(iso)4F from wheat germ exhibits saturable and substoichiometric binding to maize microtubules, induces microtubule bundling in vitro, and is colocalized or closely associated with cortical microtubule bundles in maize root cells, indicating its function as a microtubule-associated protein (MAP). The effects of p86 on the growth of short, taxol-stabilized maize microtubules were investigated. Pure microtubules underwent a gradual length redistribution, an increase in mean length, and a decrease in number concentration consistent with an end-to-end annealing mechanism of microtubule growth. Saturating p86 enhanced the microtubule length distribution and produced significantly longer and fewer microtubules than the control, indicating a facilitation of annealing by p86. Confirmation of endwise annealing rather than of dynamic instability as the mechanism for microtubule growth was made using mammalian MAP2, which also promoted the redistribution of length, increase in mean length, and decrease in number concentration of taxol-stabilized maize microtubules. Enhancement of microtubule growth occurred concomitant with bundling by p86, indicating that an alignment of microtubules in bundles facilitated endwise annealing kinetics. The results demonstrate that nonfacile plant microtubules can spontaneously elongate by endwise annealing and that MAPs enhance the rate of annealing. The p86 subunit of eukaryotic initiation factor-(iso)4F may be an important regulator of microtubule dynamics in plant cells.
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