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.

 We identified Tyr ( 112 ) and Leu ( 175 ) within the RNA - binding domain of the U1 70K protein to be cross - linked to G ( 28 ) and U ( 30 ) in stem - loop I , respectively .
U1 70K protein

 When expressed in Escherichia coli , SH - PTP2 displays tyrosine - specific phosphatase activity .
SH - PTP2

 We have isolated two H19 cDNAs ( AP and ES ) that contain this ORF4 and correspond to incomplete copies of the unique 2 . 3 kb H19 RNA .

H19 cDNAs

