Homologs of GFF645 from Sphingobium sp. HT1-2
Polyhydroxyalkanoic acid synthase
SEED: Polyhydroxyalkanoic acid synthase
KEGG: polyhydroxyalkanoate synthase 
Top 100 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser