Evidence map›Paper›PMID 15452142›Full record

ArticleThe Journal of cell biology2004

Loss of KLP-19 polar ejection force causes misorientation and missegregation of holocentric chromosomes.

James Powers, Debra J Rose, Adam Saunders, Steven Dunkelbarger, Susan Strome, William M Saxton

Abstract read
In one paragraph

Article in The Journal of cell biology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing 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

40 citing papers in PubMed.

  1. Kinesins inOpen biology · 2025
    Review
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Enucleation of theLife science alliance · 2024
    Article
  8. The Culprit Behind HBV-Infected Hepatocytes: NTCP.Drug design, development and therapy · 2024
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Mitotic Cell Division inGenetics · 2019
    Review
  16. Chromokinesins.Current biology : CB · 2018
    Review
  17. Article
  18. Article
  19. Article
  20. Review
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

6 authors.

James PowersDept. of Biology, Indiana University, 1001 E 3rd St., Bloomington, IN 47405, USA.
Debra J Rose
Adam Saunders
Steven Dunkelbarger
Susan Strome
William M Saxton

Funding

IMMUNOLOGIC STUDY OF GERM GRANULES IN C. ELEGANS EMBRY0SR01GM034059 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI STROME, SUSAN · 1985 to 2020
$8.9M
MECHANISMS AND FUNCTIONS OF SUBCELLULAR MOTILITYR01GM046295 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI SAXTON, WILLIAM M · 1991 to 2016
$3.7M
CYTOPLASMIC MOTILITY IN EARLY DEVELOPMENTR01GM058811 · NIGMS · INDIANA UNIVERSITY BLOOMINGTON · PI SAXTON, WILLIAM M · 1999 to 2002
$670k
NIGMS NIH HHS GM 34059NIGMS NIH HHS GM 46295NIGMS NIH HHS GM 58811NIGMS NIH HHS R01 GM034059NIGMS NIH HHS R01 GM046295NIGMS NIH HHS R01 GM058811NIGMS NIH HHS R01 GM058811-04
6 · The paper itself

Abstract

Holocentric chromosomes assemble kinetochores along their length instead of at a focused spot. The elongated expanse of an individual holocentric kinetochore and its potential flexibility heighten the risk of stable attachment to microtubules from both poles of the mitotic spindle (merotelic attachment), and hence aberrant segregation of chromosomes. Little is known about the mechanisms that holocentric species have evolved to avoid this type of error. Our studies of the influence of KLP-19, an essential microtubule motor, on the behavior of holocentric Caenorhabditis elegans chromosomes suggest that it has a major role in combating merotelic attachments. Depletion of KLP-19, which associates with nonkinetochore chromatin, allows aberrant poleward chromosome motion during prometaphase, misalignment of holocentric kinetochores, and multiple anaphase chromosome bridges in all mitotic divisions. Time-lapse movies of GFP-labeled mono- and bipolar spindles demonstrate that KLP-19 generates a force on relatively stiff holocentric chromosomes that pushes them away from poles. We hypothesize that this polar ejection force minimizes merotelic misattachment by maintaining a constant tension on pole-kinetochore connections throughout prometaphase, tension that compels sister kinetochores to face directly toward opposite poles.

Indexed as

AnimalsCaenorhabditis elegansCaenorhabditis elegans ProteinsCell PolarityChromatinChromosome SegregationEmbryo, NonmammalianKinesinsKinetochoresMicrotubulesMitosisMolecular Motor ProteinsSpindle ApparatusCaenorhabditis elegans ProteinsChromatinKinesinsKLP-19 protein, C elegansMolecular Motor Proteins

Identifiers

PMID15452142
PMCPMC1534123

What OpenQuestion holds

Textmetadata
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.