Make mincemeat out of one submissive turning up (5)

'make mincemeat out' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'one submissive turning up' is the wordplay.
'one' becomes 'a' (a thing is one thing).
'submissive' becomes 'meek' (I've seen this before).
'turning up' says the letters should be written in reverse.
'a'+'meek'='ameek'
'ameek' written backwards gives 'KEEMA'.

'of' is the link.

Can you help me to learn more?