Work Permit and additional employment law

Hello,

I am employed at a university in Turkey and have my visa and residence permit extended by them every year. I do not expect to leave this job as I love it.

However, recently I have been asked to join an Internet company doing something very similar to what I do at my job.
I am being encouraged to become a partner in this Limited Şirket.

So of course I wonder, can I become a partner in a company while on a work visa with my university.