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:  A Brassica cDNA clone encoding a bifunctional hydroxymethylpyrimidine kinase / thiamin - phosphate pyrophosphorylase involved in thiamin biosynthesis .

SOLUTION: hydroxymethylpyrimidine kinase

PROBLEM:  4 ) Mutation of the three extracellular cysteine residues of GFKAR beta indicated that the two conserved cysteine residues ( C305 and C385 ) , located between two transmembrane segments , form a solvent - accessible disulfide bond .

SOLUTION: GFKAR beta

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

SOLUTION:
SH3 domain