13091
In addition , PLP is required for the catabolism of homocysteine by transsulfuration .
 Chemical: PLP; Chemical: homocysteine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: PLP, homocysteine 
Answer:
 Chemical: PLP; Chemical: homocysteine