Journal of Molecular Evolution

, Volume 84, Issue 4, pp 214–224

Evolutionary Analysis of the Mammalian Tuftelin Sequence Reveals Features of Functional Importance

Original Article

DOI: 10.1007/s00239-017-9789-5

Cite this article as:
Delgado, S., Deutsch, D. & Sire, J.Y. J Mol Evol (2017) 84: 214. doi:10.1007/s00239-017-9789-5

Abstract

Tuftelin (TUFT1) is an acidic, phosphorylated glycoprotein, initially discovered in developing enamel matrix. TUFT1 is expressed in many mineralized and non-mineralized tissues. We performed an evolutionary analysis of 82 mammalian TUFT1 sequences to identify residues and motifs that were conserved during 220 million years (Ma) of evolution. We showed that 168 residues (out of the 390 residues composing the human TUFT1 sequence) are under purifying selection. Our analyses identified several, new, putatively functional domains and confirmed previously described functional domains, such as the TIP39 interaction domain, which correlates with nuclear localization of the TUFT1 protein, that was demonstrated in several tissues. We also identified several sites under positive selection, which could indicate evolutionary changes possibly related to the functional diversification of TUFT1 during evolution in some lineages. We discovered that TUFT1 and MYZAP (myocardial zonula adherens protein) share a common ancestor that was duplicated circa 500 million years ago. Taken together, these findings expand our knowledge of TUFT1 evolution and provide new information that will be useful for further investigation of TUFT1 functions.

Keywords

Tuftelin TUFT1 MYZAP Evolution Mineralization Mammals 

Supplementary material

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.Evolution et Développement du Squelette, UMR7138- Evolution Paris-Seine, Institut de Biologie (IBPS)Université Pierre et Marie CurieParisFrance
  2. 2.Dental Research Laboratory, Faculty of Dental Medicine, Institute of Dental SciencesThe Hebrew University of Jerusalem-HadassahJerusalemIsrael

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