Integrin alpha-11/beta-1 is a receptor for collagen. Heterodimer of an alpha and a beta subunit. Alpha-11 associates with beta-1. Interacts with RAB21. According to PubMed:10464311, highest levels of expression in uterus and heart, intermediate levels in skeletal muscle and intermediate to low levels in pancreas, kidney and placenta. According to PubMed:10486209, also found in brain, colon, lung, small intestine, stomach, testis, salivary glands, thyroid glands and prostate. Very low levels in peripheral blood lymphocytes, fetal brain and fetal liver. Strongly up-regulated in differentiating fetal muscle cells (in vitro). The integrin I-domain (insert) is a VWFA domain. Integrins with I-domains do not undergo protease cleavage. Belongs to the integrin alpha chain family. Truncated N-terminus.