ID   CSSD2_ECOLX             Reviewed;         802 AA.
AC   P53513;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   25-MAY-2022, entry version 77.
DE   RecName: Full=Outer membrane usher protein CssD;
DE   AltName: Full=CS6 fimbria usher protein;
DE   Flags: Precursor;
GN   Name=cssD;
OS   Escherichia coli.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=562;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=E8775;
RA   Wolf M.K., de Haan L.A.M., Cassels F.C., Willshaw G.A., Gestel E.C.M.,
RA   Gaastra W., Warren R., Boedeker E.C.;
RL   Submitted (JAN-1994) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Involved in the export and assembly of C6 fimbrial subunits
CC       across the outer membrane.
CC   -!- SUBCELLULAR LOCATION: Cell outer membrane {ECO:0000250}; Multi-pass
CC       membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the fimbrial export usher family. {ECO:0000305}.
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DR   EMBL; U04846; AAB51364.1; -; Unassigned_DNA.
DR   AlphaFoldDB; P53513; -.
DR   SMR; P53513; -.
DR   TCDB; 1.B.11.3.4; the outer membrane fimbrial usher porin (fup) family.
DR   GO; GO:0009279; C:cell outer membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0015473; F:fimbrial usher porin activity; IEA:InterPro.
DR   GO; GO:0009297; P:pilus assembly; IEA:InterPro.
DR   Gene3D; 2.60.40.2070; -; 1.
DR   Gene3D; 2.60.40.2610; -; 1.
DR   Gene3D; 3.10.20.410; -; 1.
DR   InterPro; IPR000015; Fimb_usher.
DR   InterPro; IPR042186; FimD_plug_dom.
DR   InterPro; IPR025949; PapC-like_C.
DR   InterPro; IPR043142; PapC-like_C_sf.
DR   InterPro; IPR025885; PapC_N.
DR   InterPro; IPR037224; PapC_N_sf.
DR   PANTHER; PTHR30451; PTHR30451; 1.
DR   Pfam; PF13953; PapC_C; 1.
DR   Pfam; PF13954; PapC_N; 1.
DR   Pfam; PF00577; Usher; 1.
DR   SUPFAM; SSF141729; SSF141729; 1.
PE   3: Inferred from homology;
KW   Cell outer membrane; Fimbrium biogenesis; Membrane; Signal; Transmembrane;
KW   Transmembrane beta strand; Transport.
FT   SIGNAL          1..?
FT                   /evidence="ECO:0000255"
FT   CHAIN           ?..802
FT                   /note="Outer membrane usher protein CssD"
FT                   /id="PRO_0000009307"
SQ   SEQUENCE   802 AA;  90393 MW;  5BFD0B6F17F5B5B0 CRC64;
     MNQFYKKSHY SIQKHQITGL LFLLFIYPFS TSYGNEQFSF DSRFLPSGYN YSLNSNLPPE
     GEYLVDIYIN KIKKESAIIP FYIKGNKLVP CLSKEKISSL GININNNDNT ECVETSKAGI
     SNISFEFSSL RLFIAVPKNL LSEIDKISSK DIDNGIHALF FNYQVNTRLA NNKNRYDYIS
     VSPNINYFSW RLRNLFEFNQ NNDEKTWERN YTYLEKSFYD KKLNLVVGES YTNSNVYNNY
     SFTGISVSTD TDMYTPSEID YTPEIHGVAD SDSQIIVRQG NTIIINESVP AGPFSFPITN
     LMYTGGQLNV EITDIYGNKK QYTVNNSSLP VMRKAGLMVY NFISGKLTKK NSEDGDFFTQ
     GDINYGTHYN STLFGGYQFS KNYFNLSTGI GTDLGFSGAW LLHVSRSNFK NKNGYNINLQ
     QNTQLRPFNA GVNFDYAYRK KRYVELSDIG WHGNLYNQLK NSFSLSLSKS LNKYGNFSLD
     YNKMKYWDNA YDSNSMSIRY FFKFMRAMIT TNCSLNKYQS YEKKDKRFSI NISLPLTKDY
     GHISSNYSFS NANTGTATSS VGLNGSFFND ARLNWNIQQN RTTRNNGYTD NTSYIATSYA
     SPYGVFTGSY SGSNKYSSQF YSASGGIVLH SDGVAFTQKA GDTSALVRID NISDIKIGNT
     PGVYTGYNGF ALIPHLQPFK KNTILINDKG IPDGITLANI KKQVIPSRGA IVKVKFDAKK
     GNDILFKLTT KDGKTPPLGA IAHEKNGKQI NTGIVDDDGM LYMSGLSGTG IINVTWNGKV
     CSFPFSEKDI SSKQLSVVNK QC