• Skip to primary navigation
  • Skip to main content
  • Skip to footer

LKT Labs

Biochemicals for Life Science Research

  • Products
    • New Products
    • Cancer Biology
    • Cardiovascular
    • Endocrine Signaling and Immunology
    • Metabolic and GI Pathology
    • Microbiology
    • Natural Products
    • Neuroscience
    • Peptides
    • Pharmaceutical Impurities and Derivatives
    • Stem Cell Modulators
  • Services
    • Custom Synthesis
    • Natural Product Isolation
    • Analytical Services
  • Int’l Distributors
  • Support
    • About LKT Labs
    • General Inquiry
    • Bulk Quote Request
    • Document Request
    • Technical Support
    • Catalog Request
    • Product Flyers
  • Contact Us
  • Cart
  • Login / Register
Rigin

Rigin

Product ID R3224
Cas No. 77727-17-4
Purity ≥95%
Product Unit SizeCostQuantityStock
5 mg $75.70 In stock
10 mg $128.50 In stock
25 mg $226.90 In stock
Bulk Quote

Quicklinks

  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Custom Order

Description

Rigin is a tuftsin-like tetrapeptide with the sequence G-Q-P-R that is derived from IgG. Rigin exhibits immunomodulatory activity, stimulating phagocytosis, activating polymorphonuclear lymphocytes and macrophages, and protecting against stress-induced damage.

Product Info

Cas No.

77727-17-4

Purity

≥95%

Formula

C18H32N8O6

Formula Wt.

456.51

IUPAC Name

(2S)-2-[[(2S)-1-[(2S)-5-amino-2-[(2-aminoacetyl)amino]-5-oxopentanoyl]pyrrolidine-2-carbonyl]amino]-5-(diaminomethylideneamino)pentanoic acid

Synonym

G-Q-P-R, GQPR

Solubility

Soluble in water.

Shipping and Storage

Store Temp

-20°C

Ship Temp

Ambient

Downloads

Info Sheet

R3224 Info Sheet PDF

References

Dutta RC, Puri A, Anand N. Immunomodulatory potential of hydrophobic analogs of Rigin and their role in providing protection against Plasmodium berghei infection in mice. Int Immunopharmacol. 2001 May;1(5):843-55. PMID: 11379040.

Klusha VE, Mutsenietse RK, Svirskis ShV, et al. Neuroimmunoregulatory properties of short protein fragments in rats exposed to immobilization stress. Biull Eksp Biol Med. 1987 Aug;104(8):186-7. PMID: 2887222.

Veretennikova NI, Chipens GI, Nikiforovich GV, et al. Rigin, another phagocytosis-stimulating tetrapeptide isolated from human IgG. Confirmations of a hypothesis. Int J Pept Protein Res. 1981 Apr;17(4):430-5. PMID: 7309346.

Custom Order

  • Size of single unit expressed as number (e.g. '500' in the case of 500 mg)
  • Total quantity of unit size desired (e.g. '10' in the case of 10 x 500 mg). If only one unit is desired, you may leave this blank.
  • This field is for validation purposes and should be left unchanged.

Related Products

  • A4547

    Alloxan Monohydrate

    Pyrimidine, glucose analog, used to induce diabete...
    ≥98%
  • C4757

    Clozapine

    M4 mAChR agonist, 5-HT1A partial agonist, M1/2/3/5...
    ≥97%
  • G3456

    Ginsenoside Rd

    Triterpene saponin found in species of Panax; 26S ...
    ≥98%
  • R2711

    Recombinant HCV-Core Antigens

    Recombinant HIV core protein antigen fragment.
    ≥95%
  • A5334

    Anisodamine

    Tropane alkaloid found in Solanaceae plants; α1-a...
    ≥97%
  • C4000

    CK-636

    Arp2/3 inhibitor.
    ≥98%
  • P0244

    Palbociclib Hydrochloride

    CDK4/6 inhibitor.
    ≥99%
  • P7060

    Protocatechuic Acid Ethyl Ester

    Dihydroxyphenolic acid found in cruciferous vegeta...
    ≥98%
  • I0417

    R-(−)-Iberin

    Sulforaphane homolog, ITC found in cruciferous veg...
    ≥98%
  • I0416

    Iberin

    Isothiocyanate found in cruciferous vegetables, ho...
    ≥97%
  • A1218

    Adefovir Dipivoxil

    Acyclic nucleotide (adenosine) analog, adefovir pr...
    ≥98%
  • H9801

    Hyaluronic Acid Sodium

    Endogenous anionic non-sulfated glycosaminoglycan,...
    ≥95%
  • P3465

    Piperine

    Alkaloid found in black and long peppers; TRPV1 ag...
    ≥95%
  • N1988

    γ-Neuropeptide, rabbit

    Endogenous neuropeptide; NK2 agonist.
    ≥95%
  • B5874

    Bosutinib

    Src and Abl inhibitor.
    ≥98%
  • P1761

    Pepstatin

    Aspartyl protease inhibitor.
    ≥98%
  • C4533

    Clindamycin Phosphate

    Lincosamide; ribosomal translocation and protein s...
    ≥98%
  • L0250

    Laminin Peptide SIKVAV

    Laminin-derived hexapeptide.
    ≥98%
  • Z4900

    ZM-447439 Trihydrate

    AurKA/B inhibitor.
    ≥99%
  • R1724

    Regadenoson

    Adenosine A2A agonist.
    ≥99%

Footer

  • Contact Us
  • About Us
  • Site Map
  • Terms and Conditions
LKT Laboratories, Inc.
545 Phalen Blvd.
St. Paul MN, 55130

Ph: (888)-558-5227
Fax: (888)-558-7329

©2026 LKT Laboratories, All Rights Reserved - Products for research use only