Skip to content

Study · Not a test of the peptide alone · 1986

4 results

Substrate specificity of the milk-clotting enzyme from Irpex lacteus on peptide hormones.

Kobayashi H, Kusakabe I, Okumura M, Murakami K

Agricultural and biological chemistry1 Apr 1986Cited by 3 (Europe PMC)

DOI10.1080/00021369.1986.10867488 (opens in a new tab)PepBankPUB-92019726
Source linkSource pageAsk about this study
Jump to 4 results

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 study4

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

Studies that did not test the peptide alone4

In this study, Delta sleep-inducing peptide (DSIP) 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 Delta sleep-inducing peptide (DSIP).

  1. 01LabNot a test of Delta sleep-inducing peptide (DSIP) aloneIn vitro (cell-free)Activity measurement

    In a cell-free assay, the milk-clotting enzyme from Irpex lacteus hydrolyzed delta-sleep-inducing peptide.

    In plain wordsIn lab tests, an enzyme from the fungus Irpex lacteus broke down DSIP.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    Not applicableHydrolysis of DSIP by Irpex lacteus enzyme (IR)
    Study

    n: not reported in source

    Outcome group
    Peptide structure and chemistry · Pharmacology

    Source sentences

    Summary
    IR hydrolyzed substance P, physalaemin, β-neo-endorphin, neurotensin, angiotensin I, LHRH, and DSIP, but not bradykinin.

    In this study, Delta sleep-inducing peptide (DSIP) 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 Delta sleep-inducing peptide (DSIP).

  2. 02LabNot a test of Delta sleep-inducing peptide (DSIP) aloneIn vitro (cell-free)Activity measurement

    In a cell-free assay, calf chymosin did not hydrolyze delta-sleep-inducing peptide.

    In plain wordsIn lab tests, calf chymosin did not break down DSIP.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    No significant changeHydrolysis of DSIP by calf chymosin (CR)
    Study

    n: not reported in source

    Outcome group
    Peptide structure and chemistry · Pharmacology

    Source sentences

    Summary
    CR did not hydrolyze either angiotensin I or DSIP

    In this study, Delta sleep-inducing peptide (DSIP) 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 Delta sleep-inducing peptide (DSIP).

  3. 03LabNot a test of Delta sleep-inducing peptide (DSIP) aloneIn vitro (cell-free)Activity measurement

    In a cell-free assay, the Mucor miehei enzyme did not hydrolyze delta-sleep-inducing peptide.

    In plain wordsIn lab tests, the Mucor miehei enzyme did not break down DSIP.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    No significant changeHydrolysis of DSIP by Mucor miehei enzyme (MR)
    Study

    n: not reported in source

    Outcome group
    Peptide structure and chemistry · Pharmacology

    Source sentences

    Summary
    MR did not hydrolyze DSIP

    In this study, Delta sleep-inducing peptide (DSIP) 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 Delta sleep-inducing peptide (DSIP).

  4. 04LabNot a test of Delta sleep-inducing peptide (DSIP) aloneIn vitro (cell-free)Activity measurement

    In a cell-free assay, the Endothia parasitica enzyme hydrolyzed delta-sleep-inducing peptide at the Ala(2)-Gly(3) and Gly(3)-Gly(4) bonds.

    In plain wordsIn lab tests, the Endothia parasitica enzyme cut DSIP at two bonds near its start.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    Not applicableDSIP cleavage sites of Endothia parasitica enzyme (ER)
    Study

    n: not reported in source

    Outcome group
    Peptide structure and chemistry · Pharmacology

    Source sentences

    Summary
    On the other hand, ER hydrolyzed these substrates at several bonds. Besides the common cleavage sites with IR, ER hydrolyzed the His(6)-Pro(7) bond of angiotensin I, the Leu(7)-Arg(8) bond of LHRH, and the Ala(2)-Gly(3) and Gly(3)-Gly(4) bonds of DSIP.

    In this study, Delta sleep-inducing peptide (DSIP) 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 Delta sleep-inducing peptide (DSIP).

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

    10 Oct 2026, 09:43 UTC

    Study results updated

  2. Version 1

    9 Oct 2026, 03:04 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

Publication types

PepBank is a research reference. Talk to a doctor before you use any peptide.