Trefoil Factor-1
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Trefoil Factor-1 Definition
Encoded by human TFF1 Gene (Trefoil Family), 84-amino acid 9 kD (precursor) Trefoil Protein 1 (one trefoil domain) is expressed in stomach and duodenum. Trefoil proteins are stable secretory polypeptides expressed in gastrointestinal mucosa that have at least one trefoil motif (P-type domain), a 40-amino acid domain containing three conserved disulfides, and may protect the mucosa from insults, stabilize the mucus layer, and affect healing of the epithelium. The exact function has not been determined, but TFF1 may participate in gastrointestinal cell differentiation by delaying G1/S transition and reducing apoptosis. Strong expression is also found in the regenerative tissues surrounding ulcerous lesions of the gastrointestinal tract. (from Swiss-Prot P04155, OMIM 113710, and NCI)
Trefoil Factor-1 Synonyms
Trefoil Factor 1, Breast Cancer Estrogen-Inducible Protein, Gastrointestinal Trefoil Protein pS2, TFF1, Tefoil Protein 1, Trefoil Protein 1
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