Evidence map›Paper›PMID 12719474›Full record

ArticleThe Journal of cell biology2003

Identification of XMAP215 as a microtubule-destabilizing factor in Xenopus egg extract by biochemical purification.

Mimi Shirasu-Hiza, Peg Coughlin, Tim Mitchison

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
4.6field-weighted citation impact, top 5% of its field
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

54 citing papers in PubMed, 102 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Beyond the GTP-cap: Elucidating the molecular mechanisms of microtubule catastrophe.BioEssays : news and reviews in molecular, cellular and developmental biology · 2023
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Kinesin-5 is a microtubule polymerase.Nature communications · 2015
    Article
  18. Article
  19. Article
  20. Article
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

3 authors at 2 institutions in 1 country.

Mimi Shirasu-HizaDepartment of Cell Biology, Harvard Medical School, 250 Longwood Ave., Boston, MA 02115, USA. mshirasu@hms.harvard.edu
Peg Coughlin
Tim Mitchison
Harvard University · USUniversity of California, San Francisco · US

Funding

MICROTUBULE DYNAMICS AND MITOTIC MECHANISMR01GM039565 · NIGMS · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI MITCHISON, TIMOTHY J · 1988 to 2018
$6.2M
MICROTUBULE DYNAMICS AND MITOTIC MECHANISMR37GM039565 · NIGMS · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI MITCHISON, TIMOTHY J · 1997 to 2006
$3.2M
NIGMS NIH HHS GM39565NIGMS NIH HHS R01 GM039565NIGMS NIH HHS R37 GM039565
6 · The paper itself

Abstract

Microtubules (MTs) polymerized with GMPCPP, a slowly hydrolyzable GTP analogue, are stable in buffer but are rapidly depolymerized in Xenopus egg extracts. This depolymerization is independent of three previously identified MT destabilizers (Op18, katanin, and XKCM1/KinI). We purified the factor responsible for this novel depolymerizing activity using biochemical fractionation and a visual activity assay and identified it as XMAP215, previously identified as a prominent MT growth-promoting protein in Xenopus extracts. Consistent with the purification results, we find that XMAP215 is necessary for GMPCPP-MT destabilization in extracts and that recombinant full-length XMAP215 as well as an NH2-terminal fragment have depolymerizing activity in vitro. Stimulation of depolymerization is specific for the MT plus end. These results provide evidence for a robust MT-destabilizing activity intrinsic to this microtubule-associated protein and suggest that destabilization may be part of its essential biochemical functions. We propose that the substrate in our assay, GMPCPP-stabilized MTs, serves as a model for the pause state of MT ends and that the multiple activities of XMAP215 are unified by a mechanism of antagonizing MT pauses.

Indexed as

Xenopus ProteinsAnimalsBiological AssayCell ExtractsFemaleGuanosine TriphosphateMicrotubule-Associated ProteinsMicrotubule ProteinsMicrotubulesModels, BiologicalOocytesProtein Structure, TertiaryRecombinant Fusion ProteinsXenopus laevis5'-guanylylmethylenebisphosphonateCell ExtractsCKAP5 protein, XenopusGuanosine TriphosphateMicrotubule-Associated ProteinsMicrotubule ProteinsRecombinant Fusion ProteinsXenopus Proteins

Identifiers

PMID12719474
PMCPMC2172913
OpenAlexW1994150096

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.