24035
We found sequences for transcription factors , carbohydrates metabolism , proline - rich proteins , aquaporins , chaperones and ubiquitins , all of them organized according to their biological processes .
 carbohydrates, proline
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 carbohydrates, proline