- Enterocyte differentiation marker intestinal alkaline phosphatase is a target gene of the gut-enriched Kruppel-like factor. Hinnebusch, B.F., Siddique, A., Henderson, J.W., Malo, M.S., Zhang, W., Athaide, C.P., Abedrapo, M.A., Chen, X., Yang, V.W., Hodin, R.A. Am. J. Physiol. Gastrointest. Liver Physiol. (2004)