ID   LSPA_ECOSM              Reviewed;         164 AA.
AC   B1LFV7;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   29-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 80.
DE   RecName: Full=Lipoprotein signal peptidase {ECO:0000255|HAMAP-Rule:MF_00161};
DE            EC=3.4.23.36 {ECO:0000255|HAMAP-Rule:MF_00161};
DE   AltName: Full=Prolipoprotein signal peptidase {ECO:0000255|HAMAP-Rule:MF_00161};
DE   AltName: Full=Signal peptidase II {ECO:0000255|HAMAP-Rule:MF_00161};
DE            Short=SPase II {ECO:0000255|HAMAP-Rule:MF_00161};
GN   Name=lspA {ECO:0000255|HAMAP-Rule:MF_00161};
GN   OrderedLocusNames=EcSMS35_0025;
OS   Escherichia coli (strain SMS-3-5 / SECEC).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=439855;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SMS-3-5 / SECEC;
RX   PubMed=18708504; DOI=10.1128/jb.00661-08;
RA   Fricke W.F., Wright M.S., Lindell A.H., Harkins D.M., Baker-Austin C.,
RA   Ravel J., Stepanauskas R.;
RT   "Insights into the environmental resistance gene pool from the genome
RT   sequence of the multidrug-resistant environmental isolate Escherichia coli
RT   SMS-3-5.";
RL   J. Bacteriol. 190:6779-6794(2008).
CC   -!- FUNCTION: This protein specifically catalyzes the removal of signal
CC       peptides from prolipoproteins. {ECO:0000255|HAMAP-Rule:MF_00161}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Release of signal peptides from bacterial membrane
CC         prolipoproteins. Hydrolyzes -Xaa-Yaa-Zaa-|-(S,diacylglyceryl)Cys-, in
CC         which Xaa is hydrophobic (preferably Leu), and Yaa (Ala or Ser) and
CC         Zaa (Gly or Ala) have small, neutral side chains.; EC=3.4.23.36;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00161};
CC   -!- PATHWAY: Protein modification; lipoprotein biosynthesis (signal peptide
CC       cleavage). {ECO:0000255|HAMAP-Rule:MF_00161}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00161}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00161}.
CC   -!- SIMILARITY: Belongs to the peptidase A8 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00161}.
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DR   EMBL; CP000970; ACB15624.1; -; Genomic_DNA.
DR   RefSeq; WP_000083369.1; NC_010498.1.
DR   AlphaFoldDB; B1LFV7; -.
DR   SMR; B1LFV7; -.
DR   MEROPS; A08.001; -.
DR   EnsemblBacteria; ACB15624; ACB15624; EcSMS35_0025.
DR   GeneID; 67416102; -.
DR   KEGG; ecm:EcSMS35_0025; -.
DR   HOGENOM; CLU_083252_4_0_6; -.
DR   OMA; NRWYFPA; -.
DR   UniPathway; UPA00665; -.
DR   Proteomes; UP000007011; 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:0004190; F:aspartic-type endopeptidase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006508; P:proteolysis; IEA:UniProtKB-KW.
DR   HAMAP; MF_00161; LspA; 1.
DR   InterPro; IPR001872; Peptidase_A8.
DR   PANTHER; PTHR33695; PTHR33695; 1.
DR   Pfam; PF01252; Peptidase_A8; 1.
DR   PRINTS; PR00781; LIPOSIGPTASE.
DR   TIGRFAMs; TIGR00077; lspA; 1.
DR   PROSITE; PS00855; SPASE_II; 1.
PE   3: Inferred from homology;
KW   Aspartyl protease; Cell inner membrane; Cell membrane; Hydrolase; Membrane;
KW   Protease; Transmembrane; Transmembrane helix.
FT   CHAIN           1..164
FT                   /note="Lipoprotein signal peptidase"
FT                   /id="PRO_1000190798"
FT   TRANSMEM        12..32
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00161"
FT   TRANSMEM        70..90
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00161"
FT   TRANSMEM        102..122
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00161"
FT   TRANSMEM        137..157
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00161"
FT   ACT_SITE        123
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00161"
FT   ACT_SITE        141
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00161"
SQ   SEQUENCE   164 AA;  18128 MW;  65773737CA9A3EB1 CRC64;
     MSQSICSTGL RWLWLVVVVL IIDLGSKYLI LQNFALGDTV PLFPSLNLHY ARNYGAAFSF
     LADSGGWQRW FFAGIAIGIS VILAVMMYRS KATQKLNNIA YALIIGGALG NLFDRLWHGF
     VVDMIDFYVG DWHFATFNLA DTAICVGAAL IVLEGFLPSK AKKQ