19643
We report a comprehensive analysis of binding energy hot spots at the protein - protein interaction ( PPI ) interface between nuclear factor kappa B ( NF - kappa B ) essential modulator ( NEMO ) and I kappa B kinase subunit beta ( IKK beta ) , an interaction that is critical for NF - kappa B pathway signaling , using experimental alanine scanning mutagenesis and also the FTMap method for computational fragment screening .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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