Evidence map›Paper›PMID 9214378›Full record

ArticleThe Journal of cell biology1997

A small conserved domain in the yeast Spa2p is necessary and sufficient for its polarized localization.

R A Arkowitz, N Lowe

Abstract read
In one paragraph

Article in The Journal of cell biology, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing 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

33 citing papers in PubMed.

  1. Article
  2. Chemotactic movement of a polarity site enables yeast cells to find their mates.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
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  11. Article
  12. Article
  13. Article
  14. Chemical gradients and chemotropism in yeast.Cold Spring Harbor perspectives in biology · 2009
    Review
  15. Article
  16. Article
  17. The yeast actin cytoskeleton: from cellular function to biochemical mechanism.Microbiology and molecular biology reviews : MMBR · 2006
    Review
  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

2 authors.

R A ArkowitzDivision of Cell Biology, Medical Research Council Laboratory of Molecular Biology, Cambridge, CB2 2QH, United Kingdom. ra2@mrc-lmb.cam.ac.uk
N Lowe

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

SPA2 encodes a yeast protein that is one of the first proteins to localize to sites of polarized growth, such as the shmoo tip and the incipient bud. The dynamics and requirements for Spa2p localization in living cells are examined using Spa2p green fluorescent protein fusions. Spa2p localizes to one edge of unbudded cells and subsequently is observable in the bud tip. Finally, during cytokinesis Spa2p is present as a ring at the mother-daughter bud neck. The bud emergence mutants bem1 and bem2 and mutants defective in the septins do not affect Spa2p localization to the bud tip. Strikingly, a small domain of Spa2p comprised of 150 amino acids is necessary and sufficient for localization to sites of polarized growth. This localization domain and the amino terminus of Spa2p are essential for its function in mating. Searching the yeast genome database revealed a previously uncharacterized protein which we name, Sph1p (a2p omolog), with significant homology to the localization domain and amino terminus of Spa2p. This protein also localizes to sites of polarized growth in budding and mating cells. SPH1, which is similar to SPA2, is required for bipolar budding and plays a role in shmoo formation. Overexpression of either Spa2p or Sph1p can block the localization of either protein fused to green fluorescent protein, suggesting that both Spa2p and Sph1p bind to and are localized by the same component. The identification of a 150-amino acid domain necessary and sufficient for localization of Spa2p to sites of polarized growth and the existence of this domain in another yeast protein Sph1p suggest that the early localization of these proteins may be mediated by a receptor that recognizes this small domain.

Indexed as

Conserved SequenceMicrofilament ProteinsSaccharomyces cerevisiae ProteinsAmino Acid SequenceBase SequenceBinding SitesCytoskeletal ProteinsDNA, FungalFungal ProteinsGreen Fluorescent ProteinsLuminescent ProteinsMolecular Sequence DataMutationRecombinant Fusion ProteinsSaccharomyces cerevisiaeSequence Homology, Amino AcidCytoskeletal ProteinsDNA, FungalFungal ProteinsGreen Fluorescent ProteinsLuminescent ProteinsMicrofilament ProteinsRecombinant Fusion ProteinsSaccharomyces cerevisiae ProteinsSPA2 protein, S cerevisiaeSPH1 protein, S cerevisiae

Identifiers

PMID9214378
PMCPMC2139937

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Registered trials

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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.