Immunogen sequence: MDPAGGPRGV LPRPCRVLVL LNPRGGKGKA LQLFRSHVQP LLAEAEISFT LMLTERRNHA RELVRSEELG RWDALVVMSG DGLMHEVVNG LMERPDWETA IQKPLCSLPA GSGNALAASL NHYAGYEQVT NEDLLTNCTL LLCRRLLSPM NLLSLHTASG. SPHK1, along with SPHK2, catalyzes the phosphorylation of