In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

 Comparison of the encoded ERCC3Dm protein with the homologous proteins of mouse and man shows a strong amino acid conservation ( 71 % identity ) , especially in the postulated DNA binding region and seven ' helicase ' domains .
ERCC3Dm protein

 Unlike CSK , the SH3 domain of HYL was unique since the ALYDY motif was absent .
SH3 domain

 The relation between the changes of bone density and the level of blood calcium , blood phosphorus and alkaline phosphatase ( AKP ) as well as the metabolism of vitamin D was studied .

alkaline phosphatase