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.

 The coding region of nifA was determined using a translational lacZ fusion and by site - directed mutagenesis to identify which of four in frame AUG codons was used .
lacZ fusion

 The longest cDNA insert identified was 2 . 2 kb and encoded the entire 462 - amino acid open reading frame of rat CgA including an 18 - amino acid hydrophobic signal peptide .
rat CgA

 The increments in median plasma secretin concentration were 1 . 6 , 3 . 0 , and 6 . 4 pmol x 1 ( - 1 ) after secretin , 125 , 250 and 500 fmol x kg - 1 , and the corresponding 15 - min bicarbonate output 283 , 442 , and 1435 micromol , respectively .

plasma secretin