Immunogen sequence: TSGTISSASF HPQQFQYTLD NNVLTLEQRK FYEENGFLVI KNLVPDADIQ RFRNEFEKIC RKEVKPLGLT VMRDVTISKS EYAPSEKMIT KVQDFQEDKE LFRYCTLPEI LKYVECFTGP NIMAMHTMLI NKPPDS. PHYH2 catalyzes a carbon-carbon cleavage reaction; cleaves a 2-hydroxy-3-methylacyl