Evidence map›Paper›PMID 9885249›Full record

ArticleThe Journal of cell biology1999

The bipolar kinesin, KLP61F, cross-links microtubules within interpolar microtubule bundles of Drosophila embryonic mitotic spindles.

D J Sharp, K L McDonald, H M Brown, H J Matthies, C Walczak, R D Vale, T J Mitchison, J M Scholey

Abstract read
In one paragraph

Article in The Journal of cell biology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 161 papers.

0numbers the graph read from it
0cells of the map it votes in
161citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

161 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Mechanism and regulation of kinesin motors.Nature reviews. Molecular cell biology · 2025
    Review
  7. Article
  8. Review
  9. Positioning centrioles and centrosomes.The Journal of cell biology · 2024
    Review
  10. Article
  11. Distinct regions of the kinesin-5 C-terminal tail are essential for mitotic spindle midzone localization and sliding force.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

101 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

D J SharpSection of Molecular and Cellular Biology, University of California Davis, Davis, California 95616, USA.
K L McDonald
H M Brown
H J Matthies
C Walczak
R D Vale
T J Mitchison
J M Scholey

Funding

Transgenic Mouse and Biobank CoreP01CA095616 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI LIGON, KEITH LLOYD · 2003 to 2012
$20.3M
Mitotic Motors in the Drosophila Embryo.R01GM055507 · NIGMS · UNIVERSITY OF CALIFORNIA DAVIS · PI SCHOLEY, JONATHAN M. · 1997 to 2013
$4.6M
MICROTUBULE-BASED ORGANELLE TRANSPORTR01GM038499 · NIGMS · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI VALE, RONALD D · 1988 to 2005
$1.2M
MOTOR PROTEIN FUNCTION DURING MITOSISF32GM019262 · NIGMS · UNIVERSITY OF CALIFORNIA DAVIS · PI SHARP, DAVID JAMES · 1998 to 2000
$38k
NCI NIH HHS P01 CA095616NIGMS NIH HHS F32 GM019262NIGMS NIH HHS GM19262NIGMS NIH HHS GM55507NIGMS NIH HHS R01 GM038499NIGMS NIH HHS R01 GM055507
6 · The paper itself

Abstract

Previous genetic and biochemical studies have led to the hypothesis that the essential mitotic bipolar kinesin, KLP61F, cross-links and slides microtubules (MTs) during spindle assembly and function. Here, we have tested this hypothesis by immunofluorescence and immunoelectron microscopy (immunoEM). We show that Drosophila embryonic spindles at metaphase and anaphase contain abundant bundles of MTs running between the spindle poles. These interpolar MT bundles are parallel near the poles and antiparallel in the midzone. We have observed that KLP61F motors, phosphorylated at a cdk1/cyclin B consensus domain within the BimC box (BCB), localize along the length of these interpolar MT bundles, being concentrated in the midzone region. Nonphosphorylated KLP61F motors, in contrast, are excluded from the spindle and display a cytoplasmic localization. Immunoelectron microscopy further suggested that phospho-KLP61F motors form cross-links between MTs within interpolar MT bundles. These bipolar KLP61F MT-MT cross-links should be capable of organizing parallel MTs into bundles within half spindles and sliding antiparallel MTs apart in the spindle midzone. Thus we propose that bipolar kinesin motors and MTs interact by a "sliding filament mechanism" during the formation and function of the mitotic spindle.

Indexed as

Drosophila ProteinsAnaphaseAnimalsCross-Linking ReagentsDrosophila melanogasterFreezingKinesinsMetaphaseMicroscopy, ImmunoelectronMicrotubule-Associated ProteinsMicrotubulesPhosphorylationRabbitsSpindle ApparatusCross-Linking ReagentsDrosophila ProteinsKinesinsKlp61F protein, DrosophilaMicrotubule-Associated Proteins

Identifiers

PMID9885249
PMCPMC2148119

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LicenceCC BY-NC-SA
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.