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.

[EX Q]:  PCC 6803 mutant impaired in cytochrome c maturation .
[EX A]: cytochrome c

[EX Q]:  The atopic disposition , indicated by positive skin reactions and IgE antibody titers etc . , and the bronchial reactivity to inhaled acetylcholine were examined on the following three groups : ( 1 ) 20 young adults with a history of childhood asthma who have been symptom - free for more than 4 yr ; ( 2 ) 20 current asthmatics , and ( 3 ) 20 healthy young adults .
[EX A]: IgE antibody

[EX Q]:  Siglec - 9 is predicted to contain three extracellular immunoglobulin - like domains that comprise an N - terminal V - set domain and two C2 - set domains , a transmembrane region and a cytoplasmic tail containing two putative tyrosine - based signaling motifs .
[EX A]:
Siglec - 9