Type VI secretion system/phage-baseplate injector OB domain
Family of bacterial and phage baseplate assembly proteins responsible for forming the small spike at the end of the tail or bacterial pathogenic needle-shaft. This entry represents the OB fold part of the structure. This structure contains an unusual extra beta hairpin that forms the foundation of the spike protein's beta helix.
Jiyao W et al.(2023). "The conserved domain database in 2023.",