PREY

TPM1

tropomyosin TPM1, L000002328, YNL079C
Major isoform of tropomyosin; binds to and stabilizes actin cables and filaments, which direct polarized cell growth and the distribution of several organelles; acetylated by the NatB complex and acetylated form binds actin most efficiently; TPM1 has a paralog, TPM2, that arose from the whole genome duplication
Saccharomyces cerevisiae (S288c)

Dosage Rescue

A genetic interaction is inferred when over expression or increased dosage of one gene rescues the lethality or growth defect of a strain that is mutated or deleted for another gene.

Publication

Disruption of the single tropomyosin gene in yeast results in the disappearance of actin cables from the cytoskeleton.

Liu HP, Bretscher A

The yeast tropomyosin gene, designated TPM1, is present in a single copy per haploid genome and encodes a protein with a predicted molecular weight of 23.5 kd. The protein sequence is homologous to higher cell tropomyosins, including the characteristic hydrophobic-hydrophilic pseudoheptapeptide repeats. Indirect immunofluorescence microscopy reveals that tropomyosin is localized with actin cables in wild-type cells. Disruption of TPM1 is ... [more]

Cell Apr. 21, 1989; 57(2);233-42 [Pubmed: 2649250]

Throughput

  • Low Throughput

Ontology Terms

  • phenotype: temperature sensitive growth (APO:0000092)
  • phenotype: actin cytoskeleton morphology (APO:0000120)

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
ACT1 TPM1
Co-purification
Co-purification

An interaction is inferred from the identification of two or more protein subunits in a purified protein complex, as obtained by classical biochemical fractionation or affinity purification and one or more additional fractionation steps.

Low-BioGRID
-
ACT1 TPM1
Negative Genetic
Negative Genetic

Mutations/deletions in separate genes, each of which alone causes a minimal phenotype, but when combined in the same cell results in a more severe fitness defect or lethality under a given condition. This term is reserved for high or low throughput studies with scores.

High-0.1842BioGRID
1979341
ACT1 TPM1
Reconstituted Complex
Reconstituted Complex

An interaction is detected between purified proteins in vitro.

Low-BioGRID
-
TPM1 ACT1
Synthetic Rescue
Synthetic Rescue

A genetic interaction is inferred when mutations or deletions of one gene rescues the lethality or growth defect of a strain mutated or deleted for another gene.

Low-BioGRID
162571

Curated By

  • BioGRID