The Transmembrane Mucin MUC1 Facilitates β1-Integrin-Mediated Bacterial Invasion. Li X, Wubbolts RW, Bleumink-Pluym NMC, van Putten JPM, Strijbis K.mBio. 2021 Apr 6;12(2):e03491-20. doi: 10.1128/mBio.03491-20.PMID: 33824202 At the intestinal host-microbe interface, the transmembrane mucin MUC1 can function as a physical barrier as well as a receptor for bacteria. MUC1 also influences epithelial cell morphology and receptor