TCDB is operated by the Saier Lab Bioinformatics Group
TCIDNameDomainKingdom/PhylumProtein(s)
9.B.149.1.1









Peptidase M50 with CBS domain

Bacteria
Actinomycetota
M50 peptidase of Streptomyces griseus (B1W279)
9.B.149.1.2









Zinc metalo-protease of 383 aas and 6 TMSs

Bacteria
Actinomycetota
Protease of Amycolatopsis mediterranei (Nocardia mediterranei)
9.B.149.1.4









M50 peptidase with 9 putative TMSs in a 6 + 3 TMS arrangement and a sequence divergent C-terminal Membrane Fusion Protein (MFP) domain.

Bacteria
Planctomycetota
M50 peptidase of Rhodopirellula baltica (F2AL16)
9.B.149.1.5









M50 family peptidase (720aas and 9 TMSs in a 6 + 3 TMS arrangement). This protein may have the M50 peptidase domain at the N-terminus and may have a distant member of the MFP family (8.A.1) as the C-terminal domain. It is encoded within a gene cluster adjacent to a gene coding for a putative phytochrome sensor with a GAF domain in the N-terminal hydrophilic region, followed by 1 or 2 central TMSs, followed by an MFP domain,different from that in the putative peptidase protein (see TC# 8.A.1 for the MFP family) at its C-terminus (631aas; Q3AQQ9). Possibly part of an ABC exporter.

Bacteria
Chlorobiota
M50 peptidase of Chlorobium chlorochromalii (Q3AQR0)
9.B.149.1.7









Uncharacterized protein of 934 aas and 6-7 TMSs

Eukaryota
Perkinsozoa
UP of Perkinsus marinus
9.B.149.1.8









Uncharacterized protein of 199 aas and 6 TMSs

Archaea
Euryarchaeota
UP of Methanothermobacter thermautotrophicus
9.B.149.1.9









Uncharacterized protein of 373 aas and 8 TMSs

Archaea
Euryarchaeota
UP of Pyrococcus horikoshii
9.B.149.1.10









Uncharacterized protein of 525 aas and 8 TMSs

Archaea
Candidatus Thermoplasmatota
Thermoplasma volcanium (Q97BX9)
9.B.149.1.11









Putative Zn-dependent protease of 220 aas

Bacteria
Bdellovibrionota
Protease of Bdellovibrio bacteriovorus
9.B.149.1.12









Sporulation stage IV FB protein, SpoIVFB, 288 aas and 5 TMSs 

Bacteria
Bacillota
SpoIVFB of Bacillus jeotgali
9.B.149.1.13









Integral membrane protease, SpoIVFB or BofB, of 288 aas and 5 or 6 TMSs (Yu and Kroos 2000).

Bacteria
Bacillota
SpoIVFB of Bacillus subtilis
9.B.149.1.16









Uncharacterized protease-like protein with 755 aas and 9 TMSs in a 6 + 3 TMS arrangement. The protease cleaves transmembrane domains of substrate proteins. The C-terminal hydrophilic domain and the last TMS resemble the N-terminal parts of membrane fusion proteins (TC# 8.A.1).

Bacteria
Planctomycetota
UP of Gemmata obscuriglobus
9.B.149.1.17









Putative integral membrane protein complex consisting of two or more proteins. Three of these proteins, located adjacent to each other, are listed here with a fourth, having a putative cytochrome c biosynthetic function, is listed with TC# 9.B.14.3.10.

Planctomycetota
Putative protein complex of Gemmataceae bacterium (freshwater metagenome) MSR49331, protein of 721 aas and 1 N-terminal TMS with a central MFP (HlyD) domain (TC# 8.A.1) and a C-terminal guanine nucleotide binding protein domain (like TC# 8.A.92.1.2). Its gene is adjacent to MSR49332.
MSR49332, protein of 762 aas and 9 TMSs in a 6 + 3 TMS arrangement with hydrophilic N- and C-terminal regions.
MSR49333, uncharacterized protein of 290 aas with one N-terminal TMS.
[MSR49334, putative cytochrome c biogenesis protein with 8 TMSs listed under TC# 9.B.14.3.10.]
9.B.149.2.1









Regulator of σW transmembrane metaloprotease, RasP (YluC) of 422 aas and 4 - 6 TMSs. RasP, when defective, causes defects in competence development, protein secretion and membrane protein production (Zweers et al. 2012). σV activation in B. subtilis is controlled by regulated intramembrane proteolysis and requires RasP (Hastie et al. 2013). RasP also cleaves both of the stress response anti-sigma factors, RsiW and RsiV, as well as the cell division protein FtsL, and remnant signal peptides, within their transmembrane segments (Parrell et al. 2017).

Bacteria
Bacillota
RasP of Bacillus subtilis
9.B.149.2.2









Membrane metaloprotease of 343 aas and 4-6 TMSs.

Bacteria
Candidatus Wolfebacteria
Protease of Candidatus Wolfebacteria bacterium
9.B.149.2.3









S2P integral membrane protease, RseP (Regulator of sigmaE protease) (YaeL or EcfE), of 450 aas and 5 TMSs in a 3 (N-terminal) + 2 (C-terminal) TMS arrangement (Kanehara et al. 2002; Alba et al. 2002). RseP regulates ferric citrate uptake by cleaving the sigma factor regulator, FecR (Yokoyama et al. 2021). It can also cleave sequences in transmembrane regions of other proteins (such as LacY) as well as liberated signal peptides of beta-lactamase, OmpF, LivK, SecM, PhoA, LivJ, OmpC, Lpp and TorA, probably within the membrane (Akiyama et al. 2004; Koide et al. 2008).

Bacteria
Pseudomonadota
RseP of E. coli