Hi Kavya

A few things I would try:

-set up your plates (and incubate) at 4 degrees - perhaps in a cold room
-use Alphafold model to identify patches of charge that you can mutate
-perhaps even introduce a few sticky motifs (e.g. herein and ref 26 
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2567453/)
-set your drops up at protein:reservoir ratios that aren't 1:1 e.g. 3pro:1res - 
will eventually equilibrate to greater protein concentration

-if super desperate, clone out a small domain, crystallize and then seed back 
the full-length protein with these

Good luck!
Andy

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