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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Nat Rev Gastroenterol Hepatol. 2013 Mar 12;10(6):352–361. doi: 10.1038/nrgastro.2013.35

Table 2.

Mucus along the gastrointestinal tract

Mucus Section of gastrointestinal tract References
Mouth Stomach Small intestine Large intestine
Mucus layers None Outer,
unattached layer
Inner, attached
layer		 Single,
unattached
layer		 Outer, unattached
layer
Inner, attached
layer		 39,50,57,151
Gel-forming mucins:

  • Surface/crypt

  • Gland

  • Paneth cells

 NF
MUC5B
NA		 MUC5AC
MUC6
NA		 MUC2
MUC6
MUC2		 MUC2 (MUC5B)
NF
NA		 25,42-50,152-154
Transmembrane
mucins:

  • Epithelial cells

 MUC1,
MUC16		 MUC1 MUC1, MUC3,
MUC4,
MUC12,
MUC13,
MUC17		 MUC1, MUC3,
MUC4, MUC12,
MUC13, MUC17		 25–
27,30,34,49,124,133,149,152,153,155–158
Secreted mucins MUC7 NF NF NF 40 – 42

Abbreviation: NA, not applicable. NF, not found.