Is phosphofrucrokinase1 PFK1 found in the liver?
PFK2 (PFKFB2) doesn't appear to be present in the liver. The two sources I have used agree that PFK1 (PFKL) is present in the liver. They diverge regarding the levels of expression of PFKL.

This is the expression of the three 6-phosphofructo-1-kinase and one 6-phosphofructo-1-kinase genes according to the Human proteome map (mass spectrometry).



I can't see a huge dynamic range across the proteins in the liver, although the liver specfic gene (PFKL) is the 'winner' there.

The Human protein atlas (immunohistochemistry) is also a useful source for information and it provides a very different answer. Using immunohistochemistry it shows robust signal for PFKL but not for PFKFB2 in the liver.