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Mucin from porcine stomach

Type III, bound sialic acid 0.5-1.5 %, partially purified powder

CAS Number:
EC Number:
MDL number:

Quality Level

biological source

Porcine stomach


Type III


partially purified powder


bound sialic acid, 0.5-1.5%


microbiological culture: suitable


NaOH: soluble 20 mg/mL

storage temp.


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General description

Mucins or mucus glycoproteins are the main macromolecular components of mammalian mucus. It was also used in a study to evaluate the sputum smears concentrated by cyto-centrifugation for detection of acid-fast bacilli.


Mucin from porcine stomach was used in studies on the binding site of the galactose-specific agglutinin PA-IL from Pseudomonas aeruginosa.


10, 100 g in poly bottle

Biochem/physiol Actions

Mucus forms the protective cover for all epithelial surfaces. The major structural component of mucus is gel-forming mucins. The mucus layer covering the intestinal epithelium has the MUC2 mucin as its central molecule. MUC2 is produced by goblet cells.

Preparation Note

Prepared according to the method of Glenister, et al., for use in complex growth media for dental plaque bacteria.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Product Information Sheet

Quotes and Ordering

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What does the "Type" designation in Mucin from porcine stomach mean?

    The type designation does not have any particular biological significance.  It is used to emphasize differences in the listings of this product.

  6. Is Product M1778, Mucin from porcine stomach, a purified preparation of mucin?

    This product is a partially purified preparation of mucin based on the method of Glenister cited on the product's webpage.

  7. How can I solubilize Product M1778, Mucin from porcine stomach?

    Mucin is not readily soluble in aqueous solutions. Turbid "solutions" will form at about 5 mg/mL in 0.1 M acetate buffer, pH 5.0. To try to increase the solubility, one might try further dilution and sonication, but we have not tried this in our labs.

  8. What is the molecular weight of Product M1778, Mucin from porcine stomach?

    This product is partially purified from crude mucin, M2378.  Sigma has not determined the molecular weight of this product. Neither has the sugar and amino acid composition been determined.

  9. What are the differences between Mucin from porcine stomach Products M2378 and M1778?

    Product No. M2378 is a crude mucin preparation. Product No. M1778 is a partially purified powder prepared according to the method described in Glenister, D.A. and Salmon. K. Microbial Ecol. in Health & Disease 1, 31, (1988). The amount of bound sialic acids are also different. Please refer to the specification sheets on our website.

  10. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Kenny C Mok et al.
mBio, 11(6) (2020-12-10)
The beneficial human gut bacterium Akkermansia muciniphila provides metabolites to other members of the gut microbiota by breaking down host mucin, but most of its other metabolic functions have not been investigated. A. muciniphila strain MucT is known to use
Leyuan Li et al.
Microbiome, 8(1), 33-33 (2020-03-13)
Human-targeted drugs may exert off-target effects or can be repurposed to modulate the gut microbiota. However, our understanding of such effects is limited due to a lack of rapid and scalable assay to comprehensively assess microbiome responses to drugs. Drugs
Francisco J Alvarez et al.
Applied and environmental microbiology, 81(8), 2770-2780 (2015-02-11)
The pathogenic fungus Candida albicans is the leading cause of vulvovaginal candidiasis (VVC). VVC represents a major quality-of-life issue for women during their reproductive years, a stage of life where the vaginal epithelium is subject to periodic hormonally induced changes
C A Saceanu et al.
Journal of clinical microbiology, 31(9), 2371-2374 (1993-09-01)
Early identification and isolation of tuberculosis patients is of utmost importance to minimize the risk of further epidemic spread of the disease. The traditional concentrated acid-fast smears are not very reliable tools for the presumptive diagnosis of tuberculosis. Acid-fast bacillus
Helen Rose et al.
The Journal of antimicrobial chemotherapy, 63(3), 502-510 (2009-01-21)
The Burkholderia cepacia complex (Bcc) species are important opportunistic pathogens with intrinsic antibiotic resistance. They are also well known as contaminants of disinfectants, yet their biocide susceptibility has not been studied in detail. We investigated Bcc biocide susceptibility and correlated

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