5952
Individual domains of PAPP - A have been characterized in vitro , including the metzincin proteolytic domain important for IGFBP proteolytic activity , short consensus repeats critical for cell surface association , and Lin - 12 / Notch repeat module demonstrated to determine IGFBP substrate specificity .
 None
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:  
Answer:
 None