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Research Comparison

GLP-2/Tirz vs MOTS-C

GLP-2/Tirz and MOTS-C are studied in overlapping research areas, which is why they are frequently compared. This is a neutral side-by-side reference drawn from published preclinical literature and laboratory handling data.

Shared research areas:Metabolic
ClassLipidated dual receptor agonist (GIP / GLP-1), 39-residue chainMitochondrial-derived peptide, 16 residues
Molecular weight4813.5 g/mol2174.5 g/mol
CAS numberNot assigned / not specifiedNot assigned / not specified
Purity spec≥99%≥98%
Research areasMetabolicMetabolic, Cellular Longevity
Primary diluentBacteriostatic water (0.9% benzyl alcohol)Sterile or bacteriostatic water
Working windowCommonly worked with for 4–6 weeks at 2–8 °C.Commonly worked with for 2–3 weeks at 2–8 °C.
Lead degradation routeInterfacial aggregation from agitation or freezing — the dominant practical route.Methionine oxidation to the sulfoxide (+16 Da), and MOTS-c carries methionine at the N-terminus and internally.
Freeze–thawDo not freeze reconstituted solution. Interfacial aggregation during freezing is the characteristic failure mode and is irreversible.Aliquot on reconstitution. Each vial opening introduces oxygen that acts on two susceptible residue types at once.
Light sensitivityNo specific light requirement beyond normal practice.Protect from light throughout — tryptophan photo-oxidation applies here as it does to DSIP.

How they actually differ

Comparing the two: GLP-2/Tirz is lipidated dual receptor agonist (gip / glp-1), 39-residue chain, while MOTS-C is mitochondrial-derived peptide, 16 residues — different molecular classes with different handling consequences; they call for different primary diluents (bacteriostatic water (0.9% benzyl alcohol) versus sterile or bacteriostatic water); their leading degradation routes differ (interfacial aggregation from agitation or freezing for GLP-2/Tirz, methionine oxidation to the sulfoxide (+16 da), and mots-c carries methionine at the n-terminus and internally. for MOTS-C), so the storage precautions that matter are not the same; their practical working windows differ once reconstituted. The sections below set out each in full.

GLP-2/Tirz — origin

GLP-2/Tirz is built on a GIP-based backbone rather than a GLP-1 one — an important and often-missed design detail. It was engineered from the GIP sequence and modified to acquire GLP-1 receptor activity, with a C20 fatty diacid attached via a linker for albumin binding. The term "twincretin" describes the dual incretin activity.

MOTS-C — origin

MOTS-c is encoded not in nuclear DNA but within the mitochondrial genome — specifically an open reading frame inside the 12S ribosomal RNA gene. Its discovery helped establish that mitochondria encode short signalling peptides that act on the rest of the cell, a genuinely recent addition to cell biology and the reason the compound attracted rapid research interest.

GLP-2/Tirz research themes

Dual incretin engagement

Simultaneous GIP and GLP-1 receptor activity from a GIP-derived backbone.

Insulin secretion and glucagon suppression

Core metabolic research endpoints for the incretin class.

Gastric emptying

A well-characterised GLP-1 pathway effect studied in metabolic models.

GIP receptor pharmacology

Whether GIP agonism or antagonism is the productive direction remains an active research debate.

MOTS-C research themes

Mitochondrial-derived signalling

Part of a novel class demonstrating that mitochondria encode peptides acting systemically.

AMPK pathway

The most-studied signalling interaction, examined in metabolic and exercise models.

Insulin sensitivity

Investigated in glucose-metabolism research models.

Exercise and longevity biology

Studies have examined MOTS-c expression in relation to physical activity and ageing in animal models.

GLP-2/Tirz handling

  • Swirl, never shake or vortex.
  • Add diluent down the vial wall and give the cake time — several minutes of slow dissolution is normal, not a defect.
  • Store upright and refrigerated; do not freeze once reconstituted.

MOTS-C handling

  • Use amber vials or wrap in foil; treat light protection as mandatory rather than precautionary.
  • Minimise vial openings — headspace oxygen is the practical driver of oxidation.
  • Use low-bind labware for dilute working solutions.

Both third-party tested

Every Popular Peptides batch of GLP-2/Tirz and MOTS-C is independently tested by HPLC and LC-MS with a published Certificate of Analysis. Enter a lot number to pull the COA for a specific vial.

Verify a batchPublished COAsHow we test

GLP-2/Tirz reference

Full GLP-2/Tirz reference GLP-2/Tirz storage GLP-2/Tirz reconstitution GLP-2/Tirz calculatorGLP-2/Tirz product details

MOTS-C reference

Full MOTS-C reference MOTS-C storage MOTS-C reconstitution MOTS-C calculatorMOTS-C product details

Related comparisons

5-Amino-1MQ vs GLP-2/Tirz5-Amino-1MQ vs MOTS-CCJC-1295 (No DAC) vs GLP-2/TirzCJC-1295 (No DAC) vs MOTS-CCJC-1295 + Ipamorelin vs GLP-2/TirzCJC-1295 + Ipamorelin vs MOTS-CDSIP vs MOTS-CEpitalon vs MOTS-C

GLP-2/Tirz and MOTS-C are supplied strictly as research chemicals for in-vitro laboratory and research use only. They are not intended for human or animal consumption, diagnostic, or therapeutic use. This comparison summarizes published preclinical literature and laboratory handling data; it is not medical advice, not a claim of efficacy, and not usage guidance.