"KMEF proteins" is not a recognized or established term in the field of biology or protein science. It is possible that:

* There is a typo or misspelling. Could you please double-check the term you are looking for?

* It's a specific term used within a niche field. If you can provide more context about where you encountered this term, I might be able to help. For example:

* What field of study is it related to?

* What research paper or publication mentioned this term?

* What is the overall topic being discussed?

Please provide more information so I can help you understand the meaning of "KMEF proteins."