TCDB is operated by the Saier Lab Bioinformatics Group
TCIDNameDomainKingdom/PhylumProtein(s)
1.E.5.1.1









P35 holin of phage PRD1 (Rydman and Bamford 2003; Ziedaite et al. 2005).  This holin is up to 98% identical to the holins of plasmid-dependent tectiviruses (Quinones-Olvera et al. 2024). Cell death can be dependent on holins LrgAB repressed by a novel ArsR family regulator CdsR (Zhang et al. 2024).

Viruses
Bamfordvirae, Preplasmiviricota
P35 protein of Bacteriophage PRD1 (Q3T4L9)
1.E.5.1.2









Phage holin

Bacteria
Pseudomonadota
Phage holin of of Providencia stuartii
1.E.5.1.3









Putative holin

Viruses
Heunggongvirae, Uroviricota
Putative holin of Xanthomonas phage vB_XSVEM_DIBBI
1.E.5.1.4









Putative holin (106 aas)

Bacteria
Pseudomonadota
Putative holin of Pantoea stewartii
1.E.5.1.5









Uncharacterized protein

Bacteria
Pseudomonadota
Uncharacterized protein of Methyloversatilis universalis
1.E.5.1.6









putative phage holin pg30

Viruses
Heunggongvirae, Uroviricota
gp30 of Burkholderia phage Bcep43
1.E.5.1.7









Uncharacterized protein of 112 aas and 3 TMSs

Bacteria
UP of Parcubacteria group bacterium
1.E.5.2.1









Phage-related protein (105 aas)

Bacteria
Campylobacterota
Phage-related protein of Nitratiruptor sp. strain SB155-2
1.E.5.2.2









Uncharacterized protein

Bacteria
Pseudomonadota
Uncharacterized protein of Vibrio mimicus
1.E.5.2.3









Putative holin

Viruses
Heunggongvirae, Uroviricota
Putative holin of proteobacterial phage
1.E.5.2.4









Uncharacterized protein

Bacteria
Pseudomonadota
Uncharacterized protein of Nitrosomonas eutropha
1.E.5.2.5









Putative holin of 134 aas and 3 TMSs.

Bacteria
Pseudomonadota
Holin of E. coli
1.E.5.2.6









Putative holin of 107 aas and 3 TMSs.

Bacteria
Pseudomonadota
Hol of Citrobacter sp. TSA-1
1.E.5.2.7









Phage holin family protein of 138 aas and 3 TMSs in a 1 + 2 TMS arrangement.

Bacteria
Pseudomonadota
Holin of Marinomonas shanghaiensis
1.E.5.2.8









Holin, HolY of 103 aas and 3 TMSs.  It is found in a holin-endolysin cassette in Y. enterocolitica, and has been adapted via evolution to export a large bacterial toxin (Sänger et al. 2023).

Bacteria
Pseudomonadota
HolY of Yersinia enterocolitica
1.E.5.2.9









Holin, Stm0015, of 114 aas and 3 TMSs. This holin, together with a peptidoglycan hydrolase, Stm0016, comprises a secretion system (type 10) for an exo-chitinase of 699 aas (Stm0018) (partially homologous to the protein listed under TC# 9.B.29.2.7 (Chi1)).

Archaea
Thermoproteota
Holin of Salmonella enterica (subsp. Typhimurium)
1.E.5.3.1









Uncharacterized protein

Bacteria
Thermodesulfobacteriota
Uncharacterized protein of Desulfovibrio vulgaris
1.E.5.3.2









Putative holin

Bacteria
Synergistota
Putative holin of Aminobacterium colombiense
1.E.5.3.3









Uncharacterized protein

Bacteria
Synergistota
Uncharacterized protein of Dethiosulfovibrio peptidovorans
1.E.5.3.4









Putative holin

Bacteria
Synergistota
Putative holin of Jonquetella anthopi
1.E.5.3.5









Putative holin

Bacteria
Synergistota
Putative holin of Pyramidobacter piscolens
1.E.5.4.1









Phage holin family protein of 108 aas and 3 TMSs.

Bacteria
Pseudomonadota
Holin of Rhizobium sp.
1.E.5.4.2









Phage holin family protein of 108 aas and 2 or 3 TMSs.

Bacteria
Pseudomonadota
Holin of Chitinibacter tainanensis
1.E.5.4.3









Phage holin family protein of 111 aas and 3 TMSs.

Bacteria
Pseudomonadota
Holin of Azospirillum oryzae
1.E.5.4.4









Phage holin family protein of 117 aas and 3 TMSs.

Bacteria
Pseudomonadota
Holin of Elstera litoralis
1.E.5.4.5









Putative holin of 117 aas and 3 TMSs.

Bacteria
Pseudomonadota
Holin of Halomonas qiaohouensis
1.E.5.4.6









Uncharacterized putative holin protein of 108 aas and 3 TMSs.

Bacteria
Pseudomonadota
UP of Parvibaculum sp.
1.E.5.4.7









Uncharacterized putative holin of 121 aas and 3 TMSs.

Bacteria
Pseudomonadota
UP of Hoeflea sp.
1.E.5.5.1









Holin of 96 aas with 3 TMSs. 

Viruses
Heunggongvirae, Uroviricota
Holin of Serratia phage Serbin