Searching for Enyzme Commission number 1.3.99.1 (Succinate dehydrogenase.) by Reannotation, by TIGRFam, by KEGG ortholog group, by SEED annotation, or by best hit in MetaCyc

Match by KEGG's EC number for 1.3.99.1

Gene ID	Gene Name	KO	KO Description	Genome	Fitness
MMP_RS05520		K00245	fumarate reductase iron-sulfur protein	Methanococcus maripaludis S2	no data
MMP_RS06565		K00239	succinate dehydrogenase flavoprotein subunit	Methanococcus maripaludis S2	no data

Or search for '1.3.99.1' in Methanococcus maripaludis S2 using Curated BLAST