Human Reg4 Biotinylated Antibody

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Product Details
Citations (1)
Supplemental Products

Human Reg4 Biotinylated Antibody Summary

Species Reactivity
Detects human Reg4 in Western blots.
Polyclonal Goat IgG
Antigen Affinity-purified
E. coli-derived recombinant human Reg4
Accession # Q9BYZ8
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Human Reg4 (Catalog # 1379-RG)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Reg4

Reg4 (regenerating islet-derived protein 4; also named Reg-like protein, RELP, and gastrointestinal secretory protein) is a 17 kDa, secreted glycoprotein belonging to the calcium (C-type) dependent lectin superfamily and the regenerating gene family (1-3). There are three potential isoforms for human Reg4. Isoform 1 is synthesized as a 158 amino acid (aa) precursor with a 22 aa signal sequence and a 136 aa mature chain. Amino acids 30-156 constitute a C-type lectin-like domain, and amino acid 50 is a site for potential N-linked glycosylation. In addition, amino acids 127 and 142-143 form a ligand-binding surface. In isoform 2, there is a 79 aa substitution for the C-terminal 101 amino acids, while in isoform 3, there is an 11 aa substitution for the C-terminal 57 amino acids. Human Reg4 shares 68% and 67% aa sequence identity with rat and mouse Reg4, respectively. Like other members of the regenerating gene family, Reg4 is expressed in the gastrointestinal (GI) tract and ectopically at other sites in the setting of tissue injury (1, 2). In particular, Reg4 is expressed in normal colon mucosa, and up-regulated in colon adenocarcinoma, pancreatic cancer, gastric adenocarcinoma, inflammatory bowel disease (Crohn’s disease and ulcerative colitis), and, outside the GI tract, in prostate adenocarcinoma (2-8). The physiological function of Reg4 is presently unknown, but it may be involved in inflammatory and metaplastic responses of the GI epithelium (3).

  1. Hartupee, J.C. et al. (2001) Biochim. Biophys. Acta 1518:287.
  2. Zhang, Y. et al. (2003) World J. Gastroenterol. 9:2635.
  3. Kamarainen, M. et al. (2003) Am. J. Pathol. 163:11.
  4. Zhang, Y. et al. (2003) Cancer Lett. 200:69.
  5. Violette, S. et al. (2003) Int. J. Cancer 103:185.
  6. Oue, N. et al. (2005) J. Pathol. 207:185.
  7. Zhennan, G. et al. (2005) Clin. Cancer Res. 2:2237
  8. Bishnupuri, K.S. et al. (2006) Gastroenterology 130:137.
Long Name
Regenerating Islet-derived 4
Entrez Gene IDs
83998 (Human); 67709 (Mouse); 445583 (Rat)
Alternate Names
Gastrointestinal secretory protein; GISP; GISPREG-4; Reg IV; Reg4; regenerating gene type IV; regenerating islet-derived family, member 4; regenerating islet-derived protein 4; Regenerating islet-derived protein IV; REG-IV; RELP; RELPREG-like protein

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Citation for Human Reg4 Biotinylated Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. Reg IV is a serum biomarker for gastric cancer patients and predicts response to 5-fluorouracil-based chemotherapy.
    Authors: Mitani Y, Oue N, Matsumura S, Yoshida K, Noguchi T, Ito M, Tanaka S, Kuniyasu H, Kamata N, Yasui W
    Oncogene, 2007-01-22;26(30):4383-93.
    Species: Human
    Sample Types: Serum
    Applications: ELISA Development


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