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Related Concept Videos

  1. Home
  3. Backyard Proteomics: A Case Study With The Black Widow Spider
  1. Home
  3. Backyard Proteomics: A Case Study With The Black Widow Spider

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Extraction of Venom and Venom Gland Microdissections from Spiders for Proteomic and Transcriptomic Analyses
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Backyard Proteomics: A Case Study with the Black Widow Spider

Tarsh Shah1, Jackson A Fitzpatrick2, Benjamin C Orsburn3

  • 1The Advanced Academics Biotechnology Program, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States.

Journal of Proteome Research
|July 29, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Proteomics is possible even for organisms without a fully annotated genome. This study demonstrates how to identify thousands of proteins in black widow spiders, aiding future research in less-studied species.

Keywords:
DIAmetaproteomicsnonmodel organism proteomicsspiderstoxins

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Area of Science:

  • Proteomics
  • Genomics
  • Bioinformatics

Background:

  • Mass-spectrometry-based proteomics typically requires a known proteome for the target species.
  • Performing proteomic analysis on organisms with unannotated genomes presents significant challenges.
  • The availability of genomic data is crucial for advancing proteomic studies in diverse organisms.

Purpose of the Study:

  • To investigate the feasibility of conducting proteomic analysis on organisms lacking comprehensive genomic annotation.
  • To establish a draft proteome map for the black widow spider (Latrodectus spp.).
  • To assess the utility of existing, albeit unrelated, spider genome annotations for protein identification.

Main Methods:

  • Utilized mass spectrometry-based proteomics on black widow spider samples.
  • Employed ortholog mapping to assign putative annotations to identified proteins.
  • Leveraged existing spider genome annotations to supplement data from an annotated black widow genome.

    • Main Results:

    • Successfully identified 5,502 protein groups and assigned annotations using an annotated black widow spider genome.
    • Demonstrated that over 2,000 additional proteins could be identified using unrelated spider genome annotations.
    • Found that toxin-annotated proteins were predominantly located in the main body of mature female black widow spiders.

    Conclusions:

    • A draft proteome map for the black widow spider was generated.
    • The study provides valuable data for validating machine learning models in proteomics.
    • These findings suggest that proteomic analysis is feasible for a vast number of less-studied organisms.