IGA3_HAEIF
ID IGA3_HAEIF Reviewed; 1545 AA.
AC P45385;
DT 01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1995, sequence version 1.
DT 03-AUG-2022, entry version 110.
DE RecName: Full=Immunoglobulin A1 protease autotransporter;
DE EC=3.4.21.72;
DE Contains:
DE RecName: Full=Immunoglobulin A1 protease;
DE Short=IGA1 protease;
DE Contains:
DE RecName: Full=Immunoglobulin A1 protease translocator;
DE AltName: Full=Helper peptide;
DE Flags: Precursor;
GN Name=iga;
OS Haemophilus influenzae.
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC Pasteurellaceae; Haemophilus.
OX NCBI_TaxID=727;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=HK393 / NCTC 8467 / ATCC 9795 / DSM 10001 / AMC 36-A-4 / Serotype B;
RX PubMed=1373717; DOI=10.1128/jb.174.9.2913-2921.1992;
RA Poulsen K., Reinholdt J., Kilian M.;
RT "A comparative genetic study of serologically distinct Haemophilus
RT influenzae type 1 immunoglobulin A1 proteases.";
RL J. Bacteriol. 174:2913-2921(1992).
CC -!- FUNCTION: Virulence factor; cleaves host immunoglobulin A producing
CC intact Fc and Fab fragments.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Cleavage of immunoglobulin A molecules at certain Pro-|-Xaa
CC bonds in the hinge region. No small molecule substrates are known.;
CC EC=3.4.21.72;
CC -!- SUBCELLULAR LOCATION: [Immunoglobulin A1 protease autotransporter]:
CC Periplasm {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: [Immunoglobulin A1 protease]: Secreted. Cell
CC surface.
CC -!- SUBCELLULAR LOCATION: [Immunoglobulin A1 protease translocator]: Cell
CC outer membrane {ECO:0000250}; Multi-pass membrane protein
CC {ECO:0000250}. Note=The cleaved C-terminal fragment (autotransporter
CC domain) is localized in the outer membrane. {ECO:0000250}.
CC -!- DOMAIN: The signal peptide, cleaved at the inner membrane, guides the
CC autotransporter protein to the periplasmic space. Then, insertion of
CC the C-terminal translocator domain in the outer membrane forms a
CC hydrophilic pore for the translocation of the passenger domain to the
CC bacterial cell surface, with subsequent cleavage (By similarity).
CC {ECO:0000250}.
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DR EMBL; M87490; AAA24967.1; -; Genomic_DNA.
DR PIR; B41859; B41859.
DR AlphaFoldDB; P45385; -.
DR SMR; P45385; -.
DR MEROPS; S06.007; -.
DR GO; GO:0009279; C:cell outer membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0009986; C:cell surface; IEA:UniProtKB-SubCell.
DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0042597; C:periplasmic space; IEA:UniProtKB-SubCell.
DR GO; GO:0004252; F:serine-type endopeptidase activity; IEA:InterPro.
DR GO; GO:0006508; P:proteolysis; IEA:UniProtKB-KW.
DR Gene3D; 2.160.20.20; -; 1.
DR Gene3D; 2.40.128.130; -; 1.
DR InterPro; IPR005546; Autotransporte_beta.
DR InterPro; IPR036709; Autotransporte_beta_dom_sf.
DR InterPro; IPR012332; Autotransporter_pectin_lyase_C.
DR InterPro; IPR011050; Pectin_lyase_fold/virulence.
DR InterPro; IPR000710; Peptidase_S6.
DR InterPro; IPR030396; Peptidase_S6_dom.
DR InterPro; IPR004899; Pertactin_central.
DR Pfam; PF03797; Autotransporter; 1.
DR Pfam; PF02395; Peptidase_S6; 1.
DR Pfam; PF03212; Pertactin; 1.
DR PRINTS; PR00921; IGASERPTASE.
DR SMART; SM00869; Autotransporter; 1.
DR SUPFAM; SSF103515; SSF103515; 1.
DR SUPFAM; SSF51126; SSF51126; 1.
DR PROSITE; PS51208; AUTOTRANSPORTER; 1.
DR PROSITE; PS51691; PEPTIDASE_S6; 1.
PE 3: Inferred from homology;
KW Cell outer membrane; Hydrolase; Membrane; Periplasm; Protease; Secreted;
KW Serine protease; Signal; Transmembrane; Transmembrane beta strand;
KW Virulence; Zymogen.
FT SIGNAL 1..25
FT /evidence="ECO:0000255"
FT CHAIN 26..1545
FT /note="Immunoglobulin A1 protease autotransporter"
FT /id="PRO_0000387601"
FT CHAIN 26..1012
FT /note="Immunoglobulin A1 protease"
FT /id="PRO_0000026964"
FT CHAIN 1013..1545
FT /note="Immunoglobulin A1 protease translocator"
FT /evidence="ECO:0000255"
FT /id="PRO_0000026965"
FT DOMAIN 26..336
FT /note="Peptidase S6"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01028"
FT DOMAIN 1293..1545
FT /note="Autotransporter"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00556"
FT REGION 995..1246
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 995..1015
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 1049..1077
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 1078..1098
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 1099..1124
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 1125..1220
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 292
FT /evidence="ECO:0000305"
SQ SEQUENCE 1545 AA; 170627 MW; 3EDD753988F6D478 CRC64;
MLNKKFKLNF IALTVAYALT PYTEAALVRD DVDYQIFRDF AENKGKFSVG ATNVEVRDKN
NRPLGNVLPN GIPMIDFSVV DVDKRIATLV NPQYVVGVKH VSNGVSELHF GNLNGNMNNG
NAKAHRDVSS EENRYYTVEK NEYPTKLNGK AVTTEDQAQK RREDYYMPRL DKFVTEVAPI
EASTDSSTAG TYNNKDKYPY FVRLGSGTQF IYENGTRYEL WLGKEGQKSD AGGYNLKLVG
NAYTYGIAGT PYEVNHENDG LIGFGNSNNE YINPKEILSK KPLTNYAVLG DSGSPLFVYD
REKGKWLFLG SYDYWAGYNK KSWQEWNIYK PEFAEKIYEQ YSAGSLIGSK TDYSWSSNGK
TSTITGGEKS LNVDLADGKD KPNHGKSVTF EGSGTLTLNN NIDQGAGGLF FEGDYEVKGT
SDNTTWKGAG VSVAEGKTVT WKVHNPQYDR LAKIGKGTLI VEGTGDNKGS LKVGDGTVIL
KQQTNGSGQH AFASVGIVSG RSTLVLNDDK QVDPNSIYFG FRGGRLDLNG NSLTFDHIRN
IDEGARLVNH STSKHSTVTI TGDNLITDPN NVSIYYVKPL EDDNPYAIRQ IKYGYQLYFN
EENRTYYALK KDASIRSEFP QNRGESNNSW LYMGTEKADA QKNAMNHINN ERMNGFNGYF
GEEEGKNNGN LNVTFKGKSE QNRFLLTGGT NLNGDLNVQQ GTLFLSGRPT PHARDIAGIS
STKKDSHFSE NNEVVVEDDW INRNFKATNI NVTNNATLYS GRNVESITSN ITASNNAKVH
IGYKAGDTVC VRSDYTGYVT CTTDKLSDKA LNSFNPTNLR GNVNLTESAN FVLGKANLFG
TIQSRGNSQV RLTENSHWHL TGNSDVHQLD LANGHIHLNS ADNSNNVTKY NTLTVNSLSG
NGSFYYLTDL SNKQGDKVVV TKSATGNFTL QVADKTGEPN HNELTLFDAS KAQRDHLNVS
LVGNTVDLGA WKYKLRNVNG RYDLYNPEVE KRNQTVDTTN ITTPNNIQAD VPSVPSNNEE
IARVDEAPVP PPAPATPSET TETVAENSKQ ESKTVEKNEQ DATETTAQNR EVAKEAKSNV
KANTQTNEVA QSGSETKETQ TTETKETATV EKEEKAKVET EKTQEVPKVT SQVSPKQEQS
ETVQPQAEPA RENDPTVNIK EPQSQTNTTA DTEQPAKETS SNVEQPVTES TTVNTGNSVV
ENPENTTPAT TQPTVNSESS NKPKNRHRRS VRSVPHNVEP ATTSSNDRST VALCDLTSTN
TNAVLSDARA KAQFVALNVG KAVSQHISQL EMNNEGQYNV WVSNTSMNKN YSSSQYRRFS
SKSTQTQLGW DQTISNNVQL GGVFTYVRNS NNFDKATSKN TLAQVNFYSK YYADNHWYLG
IDLGYGKFQS KLQTNHNAKF ARHTAQFGLT AGKAFNLGNF GITPIVGVRY SYLSNADFAL
DQARIKVNPI SVKTAFAQVD LSYTYHLGEF SVTPILSARY DANQGSGKIN VNGYDFAYNV
ENQQQYNAGL KLKYHNVKLS LIGGLTKAKQ AEKQKTAELK LSFSF