Some more information of the protein can be found here:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4945579/

Unfortunately, I'd love to see a 3d structure or even some x-ray crystallography, but perhaps we'll have to wait for that.

Yeah, there is not even a good model. The UniProt entry could use an update (Human, https://www.uniprot.org/uniprot/Q8TDI8), I will pass it on to my colleagues.