obsolete negative regulation of GTP cyclohydrolase I activity (obsolete GO:0043105)
OBSOLETE. Any process that stops or reduces the activity of the enzyme GTP cyclohydrolase I.
down regulation of GTP cyclohydrolase I activity
exact
down-regulation of GTP cyclohydrolase I activity
exact
downregulation of GTP cyclohydrolase I activity
exact
inhibition of GTP cyclohydrolase I activity
narrow