>tr|A0A6N0GRE8|A0A6N0GRE8_9CARY Photosystem I iron-sulfur center OS=Rheum racemiferum GN=psaC MSHSVKIYDTCIGCTQCVRACPTDVLEMIPWDGCKAKQIASAPRTEDCVGCKRCESACPT DFLSVRVYLWHETTRSMGLAY