1380
The cDNA contained an open reading frame of 1392 bp that predicted a protein of 464 amino acids and a molecular mass of 52 kDa ; this protein has 97 % identity to rat liver glucokinase .
 rat liver glucokinase
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 rat liver glucokinase