# OC Root 2nd 3rd 4th PC Gene/Definition OC.164320 Bacteria.413202 Spirochaetes.29567 Treponema.10265 tpi.451 tpi:TREPR_0388 trpA; tryptophan synthase, alpha subunit; K01695 tryptophan synthase alpha chain [EC:4.2.1.20]