Comparison

GHRP-2 vs Humanin

Function

While GHRP-2 is used in research to induce robust GH pulses and study anabolic and metabolic effects; clinically developed as pralmorelin for GH deficiency diagnostics6272, Humanin exerts neuroprotective and cytoprotective effects in models of Alzheimer’s disease, ischemia, and metabolic stress, reducing apoptosis and improving cell survival7136141.

Mechanism

While GHRP-2 works as a second-generation hexapeptide growth hormone–releasing peptide that mimics ghrelin by agonizing GHSR-1a, strongly stimulating pulsatile GH release and modestly raising prolactin, ACTH, and cortisol62723096, Humanin is a mitochondrial-derived 24-amino-acid peptide that protects cells against diverse apoptotic insults by interacting with cell-surface cytokine receptor complexes and intracellular targets, thereby activating pro-survival STAT3 and other pathways7136141.

Length and Sequence

GHRP-2 is 6 amino acids long, whereas Humanin is longer as it has a length of 24 amino acids. GHRP-2 is made up of a sequence of Alanine, D-2-Nal, Alanine, Tryptophan, Phenylalanine, Lysine. Humanin is made up of a sequence of Methionine, Alanine, Proline, Arginine, Glycine, Phenylalanine, Serine, Cysteine, Leucine, Leucine, Leucine, Leucine, Leucine, Threonine, Serine, Glutamic acid, Isoleucine, Aspartic acid, Leucine, Proline, Valine, Lysine, Arginine, Arginine, Alanine.

Receptor

GHRP-2

Ghrelin/growth hormone secretagogue receptor (GHSR-1a) 309596104

Humanin

Binds a trimeric cytokine receptor complex consisting of CNTFR, WSX-1, and gp130, and can also signal via the G-protein–coupled receptor FPRL1/FPR2136141

Organism or Origin

GHRP-2

Synthetic met-enkephalin–derived hexapeptide3072

Humanin

Human mitochondrial peptide encoded within the 16S rRNA gene region7685

Gene

GHRP-2

GHSR

Humanin

MT-RNR2

Related articles

No related articles are linked to these peptides yet.

Sources

30GHRP-6 - Wikipedia, https://en.wikipedia.org/wiki/GHRP-6
62GHRP-2: Potent Growth Hormone Releasing Peptide Guide, https://www.peptidepedia.org/performance/ghrp-2
72GHRP-2 Technical Data - Molecular Specs - Peptide Initiative, https://peptideinitiative.com/peptides/ghrp-2/technical
96Growth Hormone Secretagogue Receptor - ScienceDirect.com, https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/growth-hormone-secretagogue-receptor
7Evidence of natural selection in the mitochondrial-derived peptides ..., https://www.nature.com/articles/s41598-023-41053-0
53Frequently Asked Questions, https://www.peptidejournal.org/peptides/humanin-mitochondrial-peptide-research
76Humanin - Wikipedia, https://en.wikipedia.org/wiki/Humanin
85MT-RNR2 - Wikipedia, https://en.wikipedia.org/wiki/MT-RNR2
141Humanin: a harbinger of mitochondrial-derived peptides? - PMC - NIH, https://pmc.ncbi.nlm.nih.gov/articles/PMC3641182/