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Study · Measured the body's own peptide · 1988

2 results

Thymosin beta 4Xen: a new thymosin beta 4-like peptide in oocytes of Xenopus laevis.

Hannappel E, Kalbacher H, Voelter W

Archives of biochemistry and biophysics1 Feb 1988Cited by 44 (Europe PMC)

PMID3124756 (opens in a new tab)DOI10.1016/0003-9861(88)90480-8 (opens in a new tab)PepBankPUB-03124756
Publisher pagePubMedAsk about this study
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Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: Publisher copyright. Results still quote short attributed sentences.

Results from this study2

No result from this study comes from a test of the peptide.

Natural levels measured1

These results measure the body's own peptide. Nobody was given the peptide. They are not evidence about taking it. They are left out of key results, evidence counts and charts.

  1. 01AnimalEndogenous levelAnimal study (in vivo)Other

    Oocytes and spleen from Rana esculenta contained no thymosin beta‑4 but a similar peptide without methionine.

    In plain wordsIn frogs (Rana esculenta), oocytes and spleen had none of the body's own thymosin beta‑4 but a similar peptide without methionine.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    Not applicableThymosin beta 4 in Rana esculenta oocytes and spleen
    Study

    Rana esculentan: not reported in source

    Outcome group
    Endogenous peptide levels · Whole body

    Source sentences

    Summary
    oocytes and spleen from R. esculenta contain no thymosin beta 4 but a similar peptide without methionine.

    This result measures the body's own Thymosin beta-4 (human). Nobody was given the peptide. It is not evidence about taking it.

Studies that did not test the peptide alone1

In this study, Thymosin beta-4 (human) was a lab tool or a carrier, part of a mix, or the subject of a lab method. These results are not evidence about taking Thymosin beta-4 (human).

  1. 02AnimalNot a test of Thymosin beta-4 (human) aloneAnimal study (in vivo)Other

    Thymosin beta‑4 and thymosin beta 4Xen from Xenopus laevis oocytes differ in the amino acid residues at positions 15, 40 and 41.

    In plain wordsIn frog oocytes, thymosin beta‑4 and the new thymosin beta 4Xen differ at three amino acid positions.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    Not applicableSequence difference between thymosin beta 4 and beta 4Xen
    Study

    Xenopus laevisn: not reported in source

    Outcome group
    Synthesis and manufacturing · Pharmacology

    Source sentences

    Summary
    Thymosin beta 4 and beta 4Xen differ in the amino acid residues at positions 15, 40, and 41.

    In this study, Thymosin beta-4 (human) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Thymosin beta-4 (human).

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    13 Oct 2026, 01:52 UTC

    Study results updated

  2. Version 1

    12 Oct 2026, 18:17 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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