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.
--------
Question: Fulminant hepatic failure in these cases could be characterized by : ( 1 ) rapid decrease in serum alanine transaminase ( ALT ) level after discontinuation of ecarazine , ( 2 ) prolonged jaundice despite discontinuation of ecarazine , ( 3 ) high incidence of anti - nuclear antibody ( ANA ) ( 57 % ) , and ( 4 ) histological findings of extensive hepatocellular necrosis ranging from bridging necrosis to massive necrosis .

Answer: serum alanine transaminase

Question: A constructed phylogenetic tree suggests that the UbcP1 protein may represent a member of a distinct subfamily of E2s .

Answer: UbcP1 protein

Question: A close homologue of the APK2a gene , named APK2b , was also isolated from the Arabidopsis cDNA library .

Answer:
APK2a gene