[protein-PII]-uridylyl-L-tyrosine + H2O = [protein-PII]-L-tyrosine + UMP + H(+)
[protein-pii]-uridylyl-l-tyrosine + h2o = [protein-pii]-l-tyrosine + ump + h(+)
[protein-PII]-uridylyl-L-tyrosine + H2O = [protein-PII]-L-tyrosine + UMP + H(+)
[protein-pii]-uridylyl-l-tyrosine + h2o = [protein-pii]-l-tyrosine + ump + h(+)