>tr|A0A6F8EY40|A0A6F8EY40_CEPOC Photosystem I iron-sulfur center OS=Cephalanthus occidentalis GN=psaC MSHSVKIYDTCIGCTQCVRACPTDVLEMIPWDGCKAKQIASAPRTEDCVGCKRCESACPT DFLSVRVYLWHETTRSMGLAY