The dentin matrix acidic phosphoprotein 1 (DMP1) in the light of mammalian evolution.
Dentin matrix acidic phosphoprotein 1 (DMP1) is an acidic, highly phosphorylated, noncollagenous protein secreted during dentin and bone formation. Previous functional studies of DMP1 have revealed various motifs playing a role in either mineralization or cell differentiation. We performed an evolutionary analysis of DMP1 to identify residues and motifs that were conserved during 220 millions years (Ma) of mammalian evolution, and hence have an important function. In silico search provided us with 41 sequences that were aligned and analyzed using the Hyphy program. We showed that DMP1 contains 55 positions that were kept unchanged for 220 Ma. We also defined in a more precise manner some motifs that were already known (i.e., cleavage sites, RGD motif, ASARM peptide, glycosaminoglycan chain attachment site, nuclear localization signal sites, and dentin sialophosphoprotein-binding site), and we found five, highly conserved, new functional motifs. In the near future, functional studies could be performed to understand the role played by them.
Université Pierre et Marie Curie, UMR 7138, Paris, France.
Jérémie
J
Silvent
Jean-Yves
JY
Sire
Sidney
S
Delgado
D020816:Amino Acid Motifs; D000818:Animals; D001665:Binding Sites; D002417:Cattle; D017124:Conserved Sequence; D003804:Dentin / Q000378:metabolism; D019143:Evolution, Molecular; D005091:Exons; D016326:Extracellular Matrix Proteins / Q000235:genetics* / Q000378:metabolism; D006801:Humans; D051379:Mice; D009154:Mutation; D009842:Oligopeptides / Q000235:genetics / Q000378:metabolism; D010012:Osteogenesis; D010750:Phosphoproteins / Q000235:genetics* / Q000378:metabolism; D010802:Phylogeny; D011499:Protein Processing, Post-Translational; D051381:Rats; D012641:Selection, Genetic; D016415:Sequence Alignment; D012795:Sialoglycoproteins / Q000235:genetics / Q000378:metabolism; D013552:Swine; D000099311:Dentin Sialophosphoprotein
D016326:Extracellular Matrix Proteins; D009842:Oligopeptides; D010750:Phosphoproteins; D012795:Sialoglycoproteins; D000099311:Dentin Sialophosphoprotein; C513309:DMP1 protein, human; C047981:arginyl-glycyl-aspartic acid