>2NNC_1|Chains A, B|Sulfur covalently-binding protein|Chlorobium limicola (1092) MGSWSEKAFSASKLDDAIAAKFGSLPIQESTAIQIKAPEIAENGAFVPVTVATSIPGATNISIFTPANFSPMVASFDVLPRMKPEVSLRMRMAKTENLVVVVQAGGKLYRAVREVKVTIGGCGG