I am working with a network object where the nodes are different events in molecular biology.
Specifically; Catalytic activity of X, RNA expression of X, GTP-bound activity of X, Kinase activity of X, Oxidoreductase activity of X, Phosphatase axtivity of X, Transcriptional activity of X, Phosphorylation at residue Y.
What is the difference between RNA expression and Transcriptional activity? And which is the one that an Affymetrix microarray is measuring? eg.; transcriptional activity of KLF2, transcriptional activity of ATF2 RNA expression of HSPA1A RNA, and expression of CYP1B1