PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24896565-2 2014 By analyzing human primary brain microvascular endothelial cells constitutively activated for RhoA, silenced for RhoA or treated with the RhoAK inhibitor Y27632, we found that RhoAK phosphorylated and activated the protein tyrosine phosphatase 1B (PTP1B), which dephosphorylated tyrosine 216 of GSK3, decreasing the GSK3-mediated inhibition of beta-catenin. Tyrosine 223-231 catenin beta 1 Homo sapiens 344-356