8196
The Scm and ph proteins share a homology domain with 38 % identity over a length of 65 amino acids , termed the SPM domain , that is located at their respective C termini .
 Scm, ph
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Scm, ph