5086
Boiling of phospholamban in SDS dissociated the holoprotein into an apparently homogeneous class of low molecular weight " monomers . " Only two mobility forms of monomeric phospholamban were observed in SDS gels after phosphorylation by cAMP - dependent protein kinase , corresponding to 9 - kDa dephospho - and 11 - kDa phosphoproteins .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 None