ID   HTPX_THIDA              Reviewed;         291 AA.
AC   Q3SFQ0;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   11-OCT-2005, sequence version 1.
DT   03-AUG-2022, entry version 99.
DE   RecName: Full=Protease HtpX homolog {ECO:0000255|HAMAP-Rule:MF_00188};
DE            EC=3.4.24.- {ECO:0000255|HAMAP-Rule:MF_00188};
GN   Name=htpX {ECO:0000255|HAMAP-Rule:MF_00188}; OrderedLocusNames=Tbd_2603;
OS   Thiobacillus denitrificans (strain ATCC 25259).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Nitrosomonadales;
OC   Thiobacillaceae; Thiobacillus.
OX   NCBI_TaxID=292415;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 25259;
RX   PubMed=16452431; DOI=10.1128/jb.188.4.1473-1488.2006;
RA   Beller H.R., Chain P.S., Letain T.E., Chakicherla A., Larimer F.W.,
RA   Richardson P.M., Coleman M.A., Wood A.P., Kelly D.P.;
RT   "The genome sequence of the obligately chemolithoautotrophic, facultatively
RT   anaerobic bacterium Thiobacillus denitrificans.";
RL   J. Bacteriol. 188:1473-1488(2006).
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00188};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00188};
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00188}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00188}.
CC   -!- SIMILARITY: Belongs to the peptidase M48B family. {ECO:0000255|HAMAP-
CC       Rule:MF_00188}.
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DR   EMBL; CP000116; AAZ98556.1; -; Genomic_DNA.
DR   RefSeq; WP_011313115.1; NC_007404.1.
DR   AlphaFoldDB; Q3SFQ0; -.
DR   SMR; Q3SFQ0; -.
DR   STRING; 292415.Tbd_2603; -.
DR   MEROPS; M48.002; -.
DR   EnsemblBacteria; AAZ98556; AAZ98556; Tbd_2603.
DR   KEGG; tbd:Tbd_2603; -.
DR   eggNOG; COG0501; Bacteria.
DR   HOGENOM; CLU_042266_1_0_4; -.
DR   OMA; SRYREYV; -.
DR   OrthoDB; 1918093at2; -.
DR   Proteomes; UP000008291; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0004222; F:metalloendopeptidase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006508; P:proteolysis; IEA:UniProtKB-KW.
DR   HAMAP; MF_00188; Pept_M48_protease_HtpX; 1.
DR   InterPro; IPR022919; Pept_M48_protease_HtpX.
DR   InterPro; IPR001915; Peptidase_M48.
DR   Pfam; PF01435; Peptidase_M48; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Hydrolase; Membrane; Metal-binding;
KW   Metalloprotease; Protease; Reference proteome; Transmembrane;
KW   Transmembrane helix; Zinc.
FT   CHAIN           1..291
FT                   /note="Protease HtpX homolog"
FT                   /id="PRO_1000020962"
FT   TRANSMEM        4..24
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00188"
FT   TRANSMEM        39..59
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00188"
FT   TRANSMEM        156..176
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00188"
FT   TRANSMEM        195..215
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00188"
FT   ACT_SITE        146
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00188"
FT   BINDING         145
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00188"
FT   BINDING         149
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00188"
FT   BINDING         222
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00188"
SQ   SEQUENCE   291 AA;  31093 MW;  81EA9114954D8AE9 CRC64;
     MKRIVLFLAT NLAIVLVLSL TMRLLGVEPY LTANGLNLTS LLIFAAVMGF GGSLISLAIS
     KWMAKKSMGV QVIETPANST EFWLVETVRK YADDAGIGMP EVGIFPSPEV NAFATGMNKN
     NALVAVSAGL LSTMTRAEAE AVIGHEVAHV ANGDMVTLAL IQGVVNTFVM FLSRIIGHTV
     DRVVFKNEEG HGPAFFVTMI VAELVLGILA SIIVMWFSRQ REFRADRGGA SLAGKGAMIA
     ALERLRSLHP HPLPDKMAAF GIAGGGAAGL KRLFMTHPPL EERIAALRAV Q