• Product name
    Anti-DMBT1 antibody [5D7]
    See all DMBT1 primary antibodies
  • Description
    Mouse monoclonal [5D7] to DMBT1
  • Host species
  • Specificity
    This antibody is specific for DMBT1, but reacts with a carbohydrate epitope and cross-reacts with saliva MUC7 in immunohistochemistry.
  • Tested applications
    Suitable for: IHC-P, ELISA, WB, Flow Cytmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Full length native protein (purified) corresponding to Human DMBT1.

  • General notes

    Previously labelled as gp340. 


  • Form
  • Storage instructions
    Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
  • Storage buffer
    pH: 7.40
    Constituents: 0.0268% PBS, 2.9% Sodium chloride
  • Concentration information loading...
  • Purity
    Protein A purified
  • Clonality
  • Clone number
  • Myeloma
  • Isotype
  • Light chain type
  • Research areas


Our Abpromise guarantee covers the use of ab17779 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
IHC-P Use at an assay dependent concentration. Perform heat mediated antigen retrieval via the microwave method before commencing with IHC staining protocol.
ELISA 1/1000.
WB 1/1000. Predicted molecular weight: 214 kDa.
Flow Cyt Use 1µg for 106 cells.

ab170190 - Mouse monoclonal IgG1, is suitable for use as an isotype control with this antibody.



  • Function
    May be considered as a candidate tumor suppressor gene for brain, lung, esophageal, gastric, and colorectal cancers. May play roles in mucosal defense system, cellular immune defense and epithelial differentiation. May play a role as an opsonin receptor for SFTPD and SPAR in macrophage tissues throughout the body, including epithelial cells lining the gastrointestinal tract. May play a role in liver regeneration. May be an important factor in fate decision and differentiation of transit-amplifying ductular (oval) cells within the hepatic lineage. Required for terminal differentiation of columnar epithelial cells during early embryogenesis. May function as a binding protein in saliva for the regulation of taste sensation. Binds to HIV-1 envelope protein and has been shown to both inhibit and facilitate viral transmission. Displays a broad calcium-dependent binding spectrum against both Gram-positive and Gram-negative bacteria, suggesting a role in defense against bacterial pathogens. Binds to a range of poly-sulfated and poly-phosphorylated ligands which may explain its broad bacterial-binding specificity. Inhibits cytoinvasion of S.enterica. Associates with the actin cytoskeleton and is involved in its remodeling during regulated exocytosis. Interacts with pancreatic zymogens in a pH-dependent manner and may act as a Golgi cargo receptor in the regulated secretory pathway of the pancreatic acinar cell.
  • Tissue specificity
    Highly expressed in alveolar and macrophage tissues. In some macrophages, expression is seen on the membrane, and in other macrophages, strongly expressed in the phagosome/phagolysosome compartments. Expressed in lung, trachea, salivary gland, small intestine and stomach. In pancreas, expressed in certain cells of the islets of Langerhans. In digestive tract, confined to tissues with large epithelial surfaces. In intestinal tissue, moderately expressed in epithelial cells of the midcrypts and the crypt base. Expression is significantly elevated in intestinal tissue from patients with inflammatory bowel disease (IBD), particularly in surface epithelial and Paneth cells, but not in IBD patients with mutant NOD2. Present in crypt bases of the duodenum, in crypt tops of the colon, and in collecting ducts of the cortical kidney. Expressed in stratified squamous epithelium of vagina and in outer luminar surface and basilar region of columnar epithelial cells in cervix (at protein level). Isoform 1 is secreted to the lumen of the respiratory tract.
  • Involvement in disease
    Defects in DMBT1 are involved in the development of glioma (GLM) [MIM:137800]. Gliomas are central nervous system neoplasms derived from glial cells and comprise astrocytomas, glioblastoma multiforme, oligodendrogliomas, and ependymomas. Note=Homozygous deletions may be the predominant mechanism of DMBT1 inactivation playing a role in carcinogenesis. DMBT1 is deleted in medulloblastoma and glioblastoma cell lines; point mutations have also been reported in patients with glioma. A loss or reduction of DMBT1 expression has been seen in esophageal, gastric, lung and colorectal carcinomas as well.
  • Sequence similarities
    Belongs to the DMBT1 family.
    Contains 2 CUB domains.
    Contains 14 SRCR domains.
    Contains 1 ZP domain.
  • Developmental stage
    Expressed in fetal lung, intestine and skin. Secreted to the extracellular matrix (ECM) in certain fetal epithelia.
  • Domain
    The SRCR domains mediate binding to bacteria. The minimal bacterial-binding site is an 11-residue repeat of GRVEVLYRGSW where VEVL and W are critical residues.
  • Post-translational
    Highly N- and O-glycosylated. The O-glycans are heavily sulfated.
  • Cellular localization
    Secreted. Some isoforms may be membrane-bound. Localized to the lumenal aspect of crypt cells in the small intestine. In the colon, seen in the lumenal aspect of surface epithelial cells. Formed in the ducts of von Ebner gland, and released into the fluid bathing the taste buds contained in the taste papillae.
  • Information by UniProt
  • Database links
  • Alternative names
    • Apactin antibody
    • CRP antibody
    • CRP-[a] antibody
    • CRP-[b] antibody
    • CRP-ductin antibody
    • Crpd antibody
    • DBMT1 antibody
    • Deleted in malignant brain tumors 1 antibody
    • Deleted in malignant brain tumors 1 protein antibody
    • DMBT 1 antibody
    • DMBT1 antibody
    • DMBT1 prototype precursor antibody
    • DMBT1/6kb.1 protein precursor antibody
    • DMBT1/8kb.1 protein antibody
    • DMBT1/8kb.2 protein precursor antibody
    • DMBT1_HUMAN antibody
    • Ebnerin antibody
    • FLJ61058 antibody
    • Glycoprotein 300 antibody
    • Glycoprotein 340 antibody
    • Gp 340 antibody
    • Gp-340 antibody
    • gp300 antibody
    • GP340 antibody
    • Gp340 variant protein antibody
    • Hensin antibody
    • MGC164738 antibody
    • Mucin-like glycoprotein antibody
    • Muclin antibody
    • OTTHUMP00000020654 antibody
    • OTTHUMP00000020655 antibody
    • OTTHUMP00000020656 antibody
    • OTTHUMP00000020657 antibody
    • OTTHUMP00000020658 antibody
    • OTTHUMP00000020659 antibody
    • OTTHUMP00000020660 antibody
    • OTTHUMP00000020661 antibody
    • OTTHUMP00000020662 antibody
    • OTTHUMP00000020663 antibody
    • p80 antibody
    • Pancrin antibody
    • SAG antibody
    • Salivary agglutinin antibody
    • Surfactant pulmonary associated D binding protein antibody
    • Surfactant pulmonary associated protein D binding protein antibody
    • Surfactant pulmonary-associated D-binding protein antibody
    • Vomeroglandin antibody
    see all


  • Localization of DMBT1 by IHC-P staining of human lung with a streptavidin biotin immunocytochemical technique. The immunoreaction product, stained with ab17779 at a 1:50 dilution, is red and the section was counterstained with Mayers hematoxylin.  This application reveals high expression of DMBT1 in alveolar macrophages.

  • Overlay histogram showing A549 cells stained with ab17779 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab17779, 1µg/1x106 cells) for 30 min at 22ºC. The secondary antibody used was DyLight® 488 goat anti-mouse IgG (H+L) (ab96879) at 1/500 dilution for 30 min at 22ºC. Isotype control antibody (black line) was mouse IgG1 [ICIGG1] (ab91353, 2µg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed.


This product has been referenced in:
  • Li J  et al. Mucosal fluid glycoprotein DMBT1 suppresses twitching motility and virulence of the opportunistic pathogen Pseudomonas aeruginosa. PLoS Pathog 13:e1006392 (2017). Read more (PubMed: 28489917) »
  • Kim TH  et al. Increased expression of glycoprotein 340 in the ethmoid sinus mucosa of patients with chronic sinusitis. Arch Otolaryngol Head Neck Surg 133:1111-4 (2007). Read more (PubMed: 18025314) »
See all 6 Publications for this product

Customer reviews and Q&As

There are currently no Customer reviews or Questions for ab17779.
Please use the links above to contact us or submit feedback about this product.


Sign up