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.

 Isolation and properties of Drosophila melanogaster ferritin - - molecular cloning of a cDNA that encodes one subunit , and localization of the gene on the third chromosome .
Drosophila melanogaster ferritin

 It also showed which amino acid residues would contact an extended TATA box with a B recognition element , and evolutionary conservation of the TBP - TFB - DNA complex orientation between two archaeal organisms with widely different optimal temperature for growth ( 37 and 100 degrees C ) .
B recognition element

 After 5 - h thermal induction of cells carrying the runaway recombinant pBS1 , protein B2 constituted 40 % of the soluble protein fraction of the cells .

protein B2