“…Other Cas gene types that were detected in the identified viral contigs included IV-B, V-F1, VI-D, I-C, VI-A, V-A, VI-B1, I-E, II-B, and I-B (Supplementary Table S10). Of the 144 viral contigs in which a cas gene was detected, 47 (33%) were identified within a metagenome-assembled genome that was constructed in our previous study (ref 54 Duru et al, 2023). Notably, our observations revealed that among the cas genes we identified within viral contigs, only 20 had proximate CRISPR arrays, while for the majority (n=124), no nearby CRISPR arrays were detected.…”