5155
It acts on Cdks in the G1 and S phases of the cell cycle , and also binds to proliferating cell nuclear antigen ( PCNA ) , blocking DNA replication in vitro .
 GENE: Cdks; GENE: proliferating cell nuclear antigen; GENE: PCNA
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: Cdks, proliferating cell nuclear antigen, PCNA 
Answer:
 GENE: Cdks; GENE: proliferating cell nuclear antigen; GENE: PCNA