Reg4 Antibody [Alexa Fluor® 647]

• Reactivity: Hu
• Applications: WB, IHC
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Alexa Fluor 647

Reg4 Antibody [Alexa Fluor® 647] Summary

• Immunogen: E. coli-derived recombinant human Reg4
  Asp23-Pro158
  Accession # Q9BYZ8
• Specificity: Detects human Reg4 in direct ELISAs and Western blots. In direct ELISAs, less than 20% cross-reactivity with recombinant mouse (rm) Reg4, rmReg3A, and recombinant rat (rr) Reg3A is observed.
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Immunohistochemistry
  • Western Blot

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Reg4 Antibody [Alexa Fluor® 647]

• 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

Background

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).

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.