amelogenesis imperfecta/tyrosine

Amelogenesis imperfecta (AI) is a group of inherited disorders with defective tooth enamel formation caused by various gene mutations. One of the mutations substitutes a cytidine for an adenine in exon 6 of the X-chromosomal amelogenin gene, which results in a proline to threonine change in the

Amelogenesis imperfecta (AI) is a group of inherited disorders with defective tooth enamel formation caused by various gene mutations. One of the mutations substitutes a cytidine to adenine in exon 6 of the X-chromosomal amelogenin gene, which results in a proline to threonine change in the

The majority of mutations identified in patients with amelogenesis imperfecta have been mapped to FAM83H. As FAM83H expression is not limited to the enamel, how FAM83H contributes to amelogenesis is still largely unknown. We previously reported that members of the FAM83 family of proteins interact

X-linked amelogenesis imperfectas (AI) resulting from mutations in the amelogenin gene (AMELX) are phenotypically and genetically diverse. Amelogenin is the predominant matrix protein in developing enamel and is essential for normal enamel formation. To date, 12 allelic AMELX mutations have been

Amelogenesis imperfecta comprises a unique group of hereditary conditions that result in abnormal enamel development. The purpose of this study was to characterize the enamel proteins in different amelogenesis imperfecta types and to determine if amelogenin, the principal matrix protein in normal

Amelogenins bind to GlcNAc of the dentine-enamel matrix proteins (Ravindranath, R. M. H., Moradian-Oldak, J., Fincham, A. G. (1999) J. Biol. Chem. 274, 2464-2471). The hypothesis that amelogenins may interact with the peptides that mimic GlcNAc is tested. GlcNAc-mimicking peptide (SFGSGFGGGY) but

The enamel protein amelogenin binds to the GlcNAc-mimicking peptide (GMp) (Ravindranath, R. M. H., Tam, W., Nguyen, P., and Fincham, A. G. (2000) J. Biol. Chem. 275, 39654-39661). The GMp motif is found in the N-terminal region of CK14, a differentiation marker for ameloblasts. The binding affinity

Ameloblasts secrete amelogenins on the pre-existing enamel matrix glycoproteins at the dentine-enamel junction. The hypothesis that amelogenins may interact with enamel matrix glycoproteins is tested by hemagglutination of purified, native (porcine) and recombinant murine amelogenins (rM179 and