>tr|A0A2S1NXB2|A0A2S1NXB2_9GENT Photosystem I iron-sulfur center OS=Asclepias purpurascens GN=psaC MSHSVKIYDTCIGCTQCVRACPTDVLEMIPWDGCKAKQIASAPRTEDCVGCKRCESACPT DFLSVRVYLGAETTRSMGLAY