Evidence map›Paper›PMID 2141028›Full record

ArticleThe Journal of cell biology1990

Generation and characterization of Dictyostelium cells deficient in a myosin I heavy chain isoform.

G Jung, J A Hammer

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 1990. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
8.9field-weighted citation impact, top 2% 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

44 citing papers in PubMed, 136 citations in OpenAlex.

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  17. Myosin I overexpression impairs cell migration.The Journal of cell biology · 1997
    Article
  18. Article
  19. Article
  20. Overlapping functions of myosin-I isoforms?The Journal of cell biology · 1996
    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

2 authors at 1 institution in 1 country.

G JungLaboratory of Cell Biology, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892.
J A Hammer
National Heart Lung and Blood Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Motile activities such as chemotaxis and phagocytosis, which occur in Dictyostelium cells lacking myosin II, may be dependent upon myosin I. To begin to explore this possibility, we have engineered a disruption of the Dictyostelium myosin I heavy chain (DMIHC) gene described recently (Jung, G., C. L. Saxe III, A. R. Kimmel, and J. A. Hammer III. 1989. Proc. Natl. Acad. Sci. USA. 86:6186-6190). The double-crossover, gene disruption event that occurred resulted in replacement of the middle approximate one-third of the gene with the neomycin resistance marker. The resulting cells are devoid of both the 3.6-kb DMIHC gene transcript and the 124-kD DMIHC polypeptide. DMIHC- cells are capable of chemotactic streaming and aggregation, but these processes are delayed. Furthermore, the rate of phagocytosis by DMIHC- cells is reduced, as assessed by growth rate on lawns of heat-killed bacteria and on the initial rate of uptake of FITC-labeled bacteria. Therefore, this Dictyostelium myosin I isoform appears to play a role in supporting chemotaxis and phagocytosis, but it is clearly not required for these processes to occur. Using a portion of the DMIHC gene as a probe, we have cloned three additional Dictyostelium small myosin heavy chain genes. Comparison of these four genes with three genes described recently by Titus et al. (Titus, M. A., H. M. Warrick, and J. A. Spudich. 1989. Cell Reg. 1:55-63) indicates that there are at least five small myosin heavy chain genes in Dictyostelium. The probability that there is considerable overlap of function between these small myosin isoforms indicates that multiple gene disruptions within a single cell may be necessary to generate a more striking myosin I- phenotype.

Indexed as

Chromosome MappingDictyosteliumGene ExpressionGenetic VectorsImmunoblottingMyosinsPhenotypeMyosins

Identifiers

PMID2141028
PMCPMC2116136
OpenAlexW2093373720

What OpenQuestion holds

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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.