>sp|A2BVQ8|KHSE_PROM5 Homoserine kinase OS=Prochlorococcus marinus GN=thrB MSIPNLGKKIIVTVPSTTANLGPGFDCLGAALDLYNEFIFTRIEGDGDRFDLIMESTDGN HLRGGPENLVFRAAQKVWESADVSPFALEARVKLAVPPARGLGSSATAIVAGLIGANAIM NSPLPKEKLLELAIDIEGHPDNVVPSLLGGLCLTARSSSQRWRIIRCDWHDSIKAVIAIP AIRLSTSEARRVMPKNIPISDAVTNMGALTLLLNGLKTGNDELIKEGMFDKLHEPYRWKL IKGGLEVKEAALQAGALGCAISGAGPSILALCKSNNGKVVSQAMVKAWENLGIASRAPFL NVQTKGSQFKTISGK