ID SEC11_COCPS Reviewed; 210 AA.
AC E9CXH2;
DT 21-SEP-2011, integrated into UniProtKB/Swiss-Prot.
DT 05-APR-2011, sequence version 1.
DT 27-MAR-2024, entry version 52.
DE RecName: Full=Signal peptidase complex catalytic subunit SEC11;
DE EC=3.4.21.89 {ECO:0000250|UniProtKB:P15367};
DE AltName: Full=Signal peptidase I;
GN Name=SEC11; ORFNames=CPSG_02492;
OS Coccidioides posadasii (strain RMSCC 757 / Silveira) (Valley fever fungus).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC Eurotiomycetidae; Onygenales; Onygenaceae; Coccidioides.
OX NCBI_TaxID=443226;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=RMSCC 757 / Silveira;
RG The Broad Institute Genome Sequencing Center for Infectious Disease;
RA Neafsey D., Orbach M., Henn M.R., Cole G.T., Galgiani J., Gardner M.J.,
RA Kirkland T.N., Taylor J.W., Young S.K., Zeng Q., Koehrsen M., Alvarado L.,
RA Berlin A., Borenstein D., Chapman S.B., Chen Z., Engels R., Freedman E.,
RA Gellesch M., Goldberg J., Griggs A., Gujja S., Heilman E., Heiman D.,
RA Howarth C., Jen D., Larson L., Mehta T., Neiman D., Park D., Pearson M.,
RA Richards J., Roberts A., Saif S., Shea T., Shenoy N., Sisk P., Stolte C.,
RA Sykes S., Walk T., White J., Yandava C., Haas B., Nusbaum C., Birren B.;
RT "The genome sequence of Coccidioides posadasii strain Silveira.";
RL Submitted (MAR-2010) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalytic component of the signal peptidase complex (SPC)
CC which catalyzes the cleavage of N-terminal signal sequences from
CC nascent proteins as they are translocated into the lumen of the
CC endoplasmic reticulum (By similarity). Specifically cleaves N-terminal
CC signal peptides that contain a hydrophobic alpha-helix (h-region)
CC shorter than 18-20 amino acids (By similarity).
CC {ECO:0000250|UniProtKB:P15367, ECO:0000250|UniProtKB:P67812}.
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 Evidence={ECO:0000250|UniProtKB:P15367};
CC -!- SUBUNIT: Component of the signal peptidase complex (SPC) composed of a
CC catalytic subunit SEC11 and three accessory subunits SPC1, SPC2 and
CC SPC3 (By similarity). The complex induces a local thinning of the ER
CC membrane which is used to measure the length of the signal peptide (SP)
CC h-region of protein substrates. This ensures the selectivity of the
CC complex towards h-regions shorter than 18-20 amino acids (By
CC similarity). SPC associates with the translocon complex (By
CC similarity). {ECO:0000250|UniProtKB:P15367,
CC ECO:0000250|UniProtKB:P67812}.
CC -!- SUBCELLULAR LOCATION: Endoplasmic reticulum membrane
CC {ECO:0000250|UniProtKB:P15367}; Single-pass type II membrane protein
CC {ECO:0000250|UniProtKB:P15367}.
CC -!- DOMAIN: The C-terminal short (CTS) helix is essential for catalytic
CC activity. It may be accommodated as a transmembrane helix in the
CC thinned membrane environment of the complex, similarly to the signal
CC peptide in the complex substrates. {ECO:0000250|UniProtKB:P67812}.
CC -!- SIMILARITY: Belongs to the peptidase S26B family. {ECO:0000305}.
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DR EMBL; GL636488; EFW20649.1; -; Genomic_DNA.
DR AlphaFoldDB; E9CXH2; -.
DR SMR; E9CXH2; -.
DR STRING; 443226.E9CXH2; -.
DR GlyCosmos; E9CXH2; 1 site, No reported glycans.
DR VEuPathDB; FungiDB:CPSG_02492; -.
DR VEuPathDB; FungiDB:D8B26_003014; -.
DR eggNOG; KOG3342; Eukaryota.
DR HOGENOM; CLU_089996_0_0_1; -.
DR OMA; DNNHIDD; -.
DR Proteomes; UP000002497; Unassembled WGS sequence.
DR GO; GO:0005789; C:endoplasmic reticulum 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 InterPro; IPR036286; LexA/Signal_pep-like_sf.
DR InterPro; IPR019756; Pept_S26A_signal_pept_1_Ser-AS.
DR InterPro; IPR019533; Peptidase_S26.
DR InterPro; IPR001733; Peptidase_S26B.
DR NCBIfam; TIGR02228; sigpep_I_arch; 1.
DR PANTHER; PTHR10806; SIGNAL PEPTIDASE COMPLEX CATALYTIC SUBUNIT SEC11; 1.
DR PANTHER; PTHR10806:SF6; SIGNAL PEPTIDASE COMPLEX CATALYTIC SUBUNIT SEC11; 1.
DR SUPFAM; SSF51306; LexA/Signal peptidase; 1.
DR PROSITE; PS00501; SPASE_I_1; 1.
PE 3: Inferred from homology;
KW Endoplasmic reticulum; Glycoprotein; Hydrolase; Membrane; Protease;
KW Reference proteome; Signal-anchor; Transmembrane; Transmembrane helix.
FT CHAIN 1..210
FT /note="Signal peptidase complex catalytic subunit SEC11"
FT /id="PRO_0000412326"
FT TOPO_DOM 1..21
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT TRANSMEM 22..38
FT /note="Helical; Signal-anchor for type II membrane protein"
FT /evidence="ECO:0000255"
FT TOPO_DOM 39..210
FT /note="Lumenal"
FT /evidence="ECO:0000255"
FT REGION 196..207
FT /note="C-terminal short (CTS) helix"
FT /evidence="ECO:0000250|UniProtKB:P67812"
FT ACT_SITE 53
FT /note="Charge relay system"
FT /evidence="ECO:0000250|UniProtKB:P15367"
FT ACT_SITE 92
FT /note="Charge relay system"
FT /evidence="ECO:0000250|UniProtKB:P15367"
FT ACT_SITE 152
FT /note="Charge relay system"
FT /evidence="ECO:0000250|UniProtKB:P15367"
FT CARBOHYD 41
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
SQ SEQUENCE 210 AA; 23125 MW; B688B0924A390F12 CRC64;
MLAGLSPHLS NLRRSLTQVL NFALVLSTAF MMWKGLSIYT NSSSPIVVVL SGSMEPAFQR
GDLLFLWNRS PRAEVGEIVV YNVRGKDIPI VHRVVRAFGD DEKSPKETNG QKKKKVMSSG
KKDSIAAGAL HSDSALVSHR ILTKGDNNIA DDTELYAQGQ DYLDRKLDLV GSVRGYIPAV
GYVTIMLSEH PWLKTVLLGI MGAMVILQRE
//
