obsolete abolished protein threonine phosphorylation true This term was made obsolete to implement a decision that protein modification terms should only include residue-specific information in cases where it is especially biologically significant, such as in histones or the RNA polymerase II CTD. In all other cases, phenotypic effects on specific modified residues should be captured in annotation extensions. OBSOLETE. A cellular process phenotype in which the phosphorylation of threonine residues in one or more specific proteins, or of specific protein sites, does not occur. FYPO:0002678 protein threonine phosphorylation abolished 2015-02-19T11:54:57Z midori FYPO:0004425 abolished peptidyl-threonine phosphorylation