instruction:
In this task, you are given a sentence. You are expected to recognize the name of any form of chemical substances. Although there might be several correct answers, you need to write one of them.
question:
Penicillin-binding proteins and role of amdinocillin in causing bacterial cell death.
answer:
amdinocillin


question:
Identification and characterization of a novel flavin-containing spermine oxidase of mammalian cell origin.
answer:
spermine


question:
Isolation and function of the amino acid transporter PAT1 (slc36a1) from rabbit and discrimination between transport via PAT1 and system IMINO in renal brush-border membrane vesicles.
answer:

amino acid