TASK DEFINITION: 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.
PROBLEM:  The nucleotide sequence of a PCR - amplified SMT3A genomic DNA fragment was found to be identical to that of SMT3A cDNA , indicating the absence of intron ( s ) in its protein coding region .

SOLUTION: SMT3A cDNA

PROBLEM:  Furthermore , Grap is associated with a Ras guanine nucleotide exchange factor mSos1 , primarily through its N - terminal SH3 domain .

SOLUTION: SH3 domain

PROBLEM:  Although they are similar to the IL9R gene ( approximately 90 % identity ) , none of these copies encodes a functional receptor : none of them contains sequences homologous to the 5 ' flanking region or exon 1 of the IL9R gene , and the remaining ORFs have been inactivated by various point mutations and deletions .

SOLUTION:
IL9R gene