Peptide Database
A verified index of sequences, half-lives, and molecular weights curated for the research community.
Showing 6 peptides in Immune System
LL-37
ExperimentalImmune System
A human cathelicidin antimicrobial peptide with broad-spectrum activity against bacteria, viruses, and fungi. Also modulates immune response.
Molecular Weight
4493.3 Da
Half-Life
~4-6 hours
Thymulin
ExperimentalImmune System
A thymic hormone essential for T-cell differentiation and immune regulation. Declines significantly with age as thymus involutes.
Molecular Weight
847.9 Da (with zinc)
Half-Life
~1-2 hours
Bronchogen
Available in Russia (Khavinson peptides)Immune System
A short bioregulatory peptide targeting bronchial and lung tissue. Part of the Khavinson peptide bioregulators developed at the St. Petersburg Institute of Bioregulation.
Molecular Weight
333.3 Da
Half-Life
~2-4 hours
VIP
Investigational (multiple indications)Immune System
A 28-amino acid neuropeptide with potent anti-inflammatory, immunomodulatory, and vasodilatory properties. Being studied for CIRS, pulmonary conditions, and autoimmune diseases.
Molecular Weight
3326.8 Da
Half-Life
~1-2 minutes (rapid degradation)
KPV
ExperimentalImmune System
A C-terminal tripeptide fragment of alpha-MSH with potent anti-inflammatory properties. Being studied for gut inflammation, IBD, and skin conditions.
Molecular Weight
342.4 Da
Half-Life
~2-4 hours
Thymalin
Approved in RussiaImmune System
A complex of polypeptides extracted from calf thymus glands. Used in Russia for immune restoration, particularly in immunodeficient states and cancer adjuvant therapy.
Molecular Weight
Variable (mixture)
Half-Life
~3-4 hours