>tr|A0A2S1NWW4|A0A2S1NWW4_9GENT Photosystem I iron-sulfur center OS=Asclepias pringlei GN=psaC MSHSVKIYDTCIGCTQCVRACPTDVLEMIPWDGCKAKQIASAPRTEDCVGCKRCESACPT DFLSVRVYLGAETTRSMGLAY