ID   HPAA3_HELPX             Reviewed;         260 AA.
AC   Q48261;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 66.
DE   RecName: Full=Neuraminyllactose-binding hemagglutinin;
DE   AltName: Full=Flagellar sheath adhesin;
DE   AltName: Full=N-acetylneuraminyllactose-binding fibrillar hemagglutinin receptor-binding subunit;
DE            Short=NLBH;
DE   Flags: Precursor;
GN   Name=hpaA;
OS   Helicobacter pylori (Campylobacter pylori).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=210;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 43504 / NCTC 11637 / JCM 7653 / RPH 13487;
RX   PubMed=9287032; DOI=10.1128/jb.179.17.5643-5647.1997;
RA   Jones A.C., Logan R.P., Foynes S., Cockayne A., Wren B.W., Penn C.W.;
RT   "A flagellar sheath protein of Helicobacter pylori is identical to HpaA, a
RT   putative N-acetylneuraminyllactose-binding hemagglutinin, but is not an
RT   adhesin for AGS cells.";
RL   J. Bacteriol. 179:5643-5647(1997).
CC   -!- SUBCELLULAR LOCATION: Cell outer membrane {ECO:0000305}; Lipid-anchor
CC       {ECO:0000305}.
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DR   EMBL; X92502; CAA63246.1; -; Genomic_DNA.
DR   RefSeq; WP_001202524.1; NZ_BNAZ01000006.1.
DR   AlphaFoldDB; Q48261; -.
DR   SMR; Q48261; -.
DR   GO; GO:0009279; C:cell outer membrane; IEA:UniProtKB-SubCell.
DR   Gene3D; 3.30.160.180; -; 1.
DR   InterPro; IPR007876; NeuraminylLac-bd_hemagglutn.
DR   InterPro; IPR038531; NeuraminylLac-bd_hemagglutn_sf.
DR   Pfam; PF05211; NLBH; 1.
DR   PIRSF; PIRSF019714; Neuraminyllac-bd_haemagglutn; 1.
DR   PROSITE; PS51257; PROKAR_LIPOPROTEIN; 1.
PE   3: Inferred from homology;
KW   Cell outer membrane; Lipoprotein; Membrane; Palmitate; Signal.
FT   SIGNAL          1..27
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00303"
FT   CHAIN           28..260
FT                   /note="Neuraminyllactose-binding hemagglutinin"
FT                   /id="PRO_0000018103"
FT   REGION          134..139
FT                   /note="N-acetyl-neuraminyl-alpha(2,3)-lactose binding
FT                   motif"
FT                   /evidence="ECO:0000255"
FT   LIPID           28
FT                   /note="N-palmitoyl cysteine"
FT                   /evidence="ECO:0000305"
FT   LIPID           28
FT                   /note="S-diacylglycerol cysteine"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   260 AA;  29100 MW;  F613B93FF1FF1F40 CRC64;
     MRANNHFKDF AWKKCLLGAS VVALLVGCSP HIIETNEVAL KLNYHPASEK VQALDEKILL
     LRPAFQYSDN IAKEYENKFK NQTALKVEQI LQNQGYKVIS VDSSDKDDFS FAQKKEGYLA
     VAMNGEIVLR PDPKRTIQKK SEPGLLFSTG LDKMEGVLIP AGFIKVTILE PMSGESLDSF
     TMDLSELDIQ EKFLKTTHSS HSGGLVSTMV KGTDNSNDAI KSALNKIFAN IMQEIDKKLT
     QKNLESYQKD AKELKGKRNR