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Study · Not a test of the peptide alone · 1982

3 results

Thymosins beta 8 and beta 9: two new peptides isolated from calf thymus homologous to thymosin beta 4.

Hannappel E, Davoust S, Horecker BL

Proceedings of the National Academy of Sciences of the United States of America1 Mar 1982Cited by 48 (Europe PMC)

PMID6952223 (opens in a new tab)PMCIDPMC346049 (opens in a new tab)DOI10.1073/pnas.79.6.1708 (opens in a new tab)PepBankPUB-06952223
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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 study3

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

Studies that did not test the peptide alone3

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. 01LabNot a test of Thymosin beta-4 (human) aloneIn vitro (cell-free)Other

    Thymosin beta 8 has 39 amino acid residues, of which 31 are identical to those of thymosin beta‑4.

    In plain wordsIn lab analysis, 31 of the 39 residues of thymosin beta 8 are the same as in thymosin beta‑4.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    Not applicableSequence identity of thymosin beta 8 with thymosin beta 4
    Study

    n: not reported in source

    Outcome group
    Peptide structure and chemistry · Pharmacology

    Source sentences

    Summary
    Thymosin beta 8, isolated from calf thymus fraction 5, has a mass of 4518 daltons and contains 39 amino acid residues, of which 31 are identical to the corresponding amino acid residues in thymosin beta 4 isolated from the same source.

    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).

  2. 02LabNot a test of Thymosin beta-4 (human) aloneIn vitro (cell-free)Other

    The NH2 terminus of thymosin beta 8 is acetylalanine, compared with acetylserine in thymosin beta‑4.

    In plain wordsIn lab analysis, thymosin beta 8 starts with acetylalanine, while thymosin beta‑4 starts with acetylserine.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    Not applicableNH2 terminus of thymosin beta 8 versus thymosin beta 4
    Study

    n: not reported in source

    Outcome group
    Peptide structure and chemistry · Pharmacology

    Source sentences

    Summary
    The NH2 terminus of thymosin beta 8 is acetylalanine, compared with acetylserine in thymosin beta 4.

    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).

  3. 03LabNot a test of Thymosin beta-4 (human) aloneIn vitro (cell-free)Other

    Thymosin beta 9 has 41 amino acids, of which 32 are identical to those of thymosin beta‑4.

    In plain wordsIn lab analysis, 32 of the 41 amino acids of thymosin beta 9 are the same as in thymosin beta‑4.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    Not applicableSequence identity of thymosin beta 9 with thymosin beta 4
    Study

    n: not reported in source

    Outcome group
    Peptide structure and chemistry · Pharmacology

    Source sentences

    Summary
    It has a mass of 4717 daltons and 32 of its 41 amino acids are identical to those of thymosin beta 4.

    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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