PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15916860-3 2005 Here we show an activation of the extracellular signal-regulated kinases (ERK1 and ERK2) and the downstream nuclear targets Elk-1 and calcium/cAMP response element binding protein, in the hippocampus of cystathionine beta synthase deficient mice, a murine model of hyperhomocysteinemia. Calcium 134-141 cystathionine beta-synthase Mus musculus 203-230