ID   LEP_RICFE               Reviewed;         266 AA.
AC   Q4UKA7;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2005, sequence version 1.
DT   27-MAR-2024, entry version 112.
DE   RecName: Full=Signal peptidase I;
DE            Short=SPase I;
DE            EC=3.4.21.89;
DE   AltName: Full=Leader peptidase I;
GN   Name=lepB; OrderedLocusNames=RF_1177;
OS   Rickettsia felis (strain ATCC VR-1525 / URRWXCal2) (Rickettsia azadi).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Rickettsiales;
OC   Rickettsiaceae; Rickettsieae; Rickettsia; spotted fever group.
OX   NCBI_TaxID=315456;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC VR-1525 / URRWXCal2;
RX   PubMed=15984913; DOI=10.1371/journal.pbio.0030248;
RA   Ogata H., Renesto P., Audic S., Robert C., Blanc G., Fournier P.-E.,
RA   Parinello H., Claverie J.-M., Raoult D.;
RT   "The genome sequence of Rickettsia felis identifies the first putative
RT   conjugative plasmid in an obligate intracellular parasite.";
RL   PLoS Biol. 3:1-12(2005).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Cleavage of hydrophobic, N-terminal signal or leader sequences
CC         from secreted and periplasmic proteins.; EC=3.4.21.89;
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000305}; Single-pass
CC       type II membrane protein {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the peptidase S26 family. {ECO:0000305}.
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DR   EMBL; CP000053; AAY62028.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q4UKA7; -.
DR   SMR; Q4UKA7; -.
DR   STRING; 315456.RF_1177; -.
DR   MEROPS; S26.001; -.
DR   KEGG; rfe:RF_1177; -.
DR   eggNOG; COG0681; Bacteria.
DR   HOGENOM; CLU_028723_1_2_5; -.
DR   OrthoDB; 9815782at2; -.
DR   Proteomes; UP000008548; Chromosome.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0004252; F:serine-type endopeptidase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006465; P:signal peptide processing; IEA:InterPro.
DR   CDD; cd06530; S26_SPase_I; 1.
DR   Gene3D; 2.10.109.10; Umud Fragment, subunit A; 1.
DR   InterPro; IPR036286; LexA/Signal_pep-like_sf.
DR   InterPro; IPR000223; Pept_S26A_signal_pept_1.
DR   InterPro; IPR019758; Pept_S26A_signal_pept_1_CS.
DR   InterPro; IPR019757; Pept_S26A_signal_pept_1_Lys-AS.
DR   InterPro; IPR019533; Peptidase_S26.
DR   NCBIfam; TIGR02227; sigpep_I_bact; 1.
DR   PANTHER; PTHR43390:SF1; CHLOROPLAST PROCESSING PEPTIDASE; 1.
DR   PANTHER; PTHR43390; SIGNAL PEPTIDASE I; 1.
DR   Pfam; PF10502; Peptidase_S26; 1.
DR   PRINTS; PR00727; LEADERPTASE.
DR   SUPFAM; SSF51306; LexA/Signal peptidase; 1.
DR   PROSITE; PS00760; SPASE_I_2; 1.
DR   PROSITE; PS00761; SPASE_I_3; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Hydrolase; Membrane; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..266
FT                   /note="Signal peptidase I"
FT                   /id="PRO_0000316275"
FT   TOPO_DOM        1..20
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        21..41
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        42..266
FT                   /note="Periplasmic"
FT                   /evidence="ECO:0000255"
FT   ACT_SITE        45
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        108
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   266 AA;  31119 MW;  D7CE673D20F67D45 CRC64;
     MQTDNTKSNT NKTAKQEWGS FAFVICIALL IRILIMEPFT VPTGSMKATI LENDYIFSTK
     YSYGYSNYSL SFFDFIPLFK GRIFAREPER GDIVVFRPPN DMNVRYIKRL IGLPGDKIQL
     IDDVIYINDK KIERTEVGTY ISEEGIKYLK FKETLPNGRT YFSYKLAPIF GVIYNDRYGN
     TDVFYVPEGK YFFLGDNRDQ SNDSRVNLGF VPFENFIAKA QFIWLSTKIT WWDNDIGVIN
     LVLKLKPWIE SVRLNRIFRN LYSTDE
//