>tr|A0A6M3SE20|A0A6M3SE20_9POAL Photosystem I iron-sulfur center OS=Elymus grandis GN=psaC MSHSVKIYDTCIGCTQCVRACPTDVLEMIPWDGCKAKQIASAPRTEDCVGCKRCESACPT DFLSVRVYLGPETTRSMALSY