CciNI, an isoschizomer of NotI from Curtobacterium citreum recognizes 5'-GC decreases GGCCGC-3'.

CciNI, an isoschizomer of NotI, has been isolated from Curtobacterium citreum. The enzyme cleaves within the recognition sequence 5'-GC decreases GGCCGC-3' as indicated by the arrow.