Protein
PqqA peptide cyclase
Organism
Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
Function
Catalyzes the cross-linking of a glutamate residue and a tyrosine residue in the PqqA protein as part of the biosynthesis of pyrroloquinoline quinone (PQQ).
Similarity
Belongs to the radical SAM superfamily. PqqE family.
Sequence
MRNSGSSCSESVGPPLWLLAELTYRCPLQCPYCSNPLEFAREGAELSTAEWIEVFRQARELGAAQLGFSGGEPLLRQDLAELIEAGRGLGFYTNLITSGIGLDEARLARFAEAGLDHVQISFQAADEEVNNLLAGSRKAFAQKLAMARAVKAHGYPMVLNFVTHRHNIDNIERIIQLCIELEADYVELATCQFYGWAALNRAGLLPTRAQLERAERITAEYRQRLAAEGNPCKLIFVTPDYYEERPKACMGGWASVFLDITPDGTALPCHSARQLPVQFPNVREHSLRHIWYESFGFNRYRGDAWMPEPCRSCEEKERDHGGCRCQAFLLTGDADATDPVCAKSARHDLILAARRQAEEAPLGLDALTWRNQRASRLICKA