ID   OPP2B_HAEIF             Reviewed;         363 AA.
AC   Q48220;
DT   15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 80.
DE   RecName: Full=Outer membrane protein P2;
DE            Short=OMP P2;
DE   Flags: Precursor;
GN   Name=ompP2;
OS   Haemophilus influenzae.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Haemophilus.
OX   NCBI_TaxID=727;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=3230B;
RX   PubMed=8412618; DOI=10.1006/mpat.1993.1044;
RA   Duim B., Dankert J., Jansen H.M., van Alphen L.;
RT   "Genetic analysis of the diversity in outer membrane protein P2 of non-
RT   encapsulated Haemophilus influenzae.";
RL   Microb. Pathog. 14:451-462(1993).
CC   -!- FUNCTION: Forms pores that allow passive diffusion of small molecules
CC       across the outer membrane. {ECO:0000250}.
CC   -!- SUBUNIT: Homotrimer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell outer membrane; Multi-pass membrane protein.
CC   -!- SIMILARITY: Belongs to the Gram-negative porin family. {ECO:0000305}.
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DR   EMBL; X73391; CAA51808.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q48220; -.
DR   SMR; Q48220; -.
DR   GO; GO:0009279; C:cell outer membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0046930; C:pore complex; IEA:UniProtKB-KW.
DR   GO; GO:0015288; F:porin activity; IEA:UniProtKB-KW.
DR   GO; GO:0006811; P:ion transport; IEA:UniProtKB-KW.
DR   CDD; cd00342; gram_neg_porins; 1.
DR   Gene3D; 2.40.160.10; -; 1.
DR   InterPro; IPR033900; Gram_neg_porin_domain.
DR   InterPro; IPR023614; Porin_dom_sf.
DR   Pfam; PF13609; Porin_4; 1.
PE   3: Inferred from homology;
KW   Cell outer membrane; Ion transport; Membrane; Porin; Signal; Transmembrane;
KW   Transmembrane beta strand; Transport.
FT   SIGNAL          1..20
FT   CHAIN           21..363
FT                   /note="Outer membrane protein P2"
FT                   /id="PRO_0000025268"
SQ   SEQUENCE   363 AA;  39873 MW;  2739FD0BF42A3051 CRC64;
     MKKTLAALIV GAFAASAANA AVVYNNEGTN VELGGRLSII AEQSNSTIKD QKQQHGALRN
     QSSRFHIKAT HNFGDGFYAQ GYLETRLVSA QSGTESDNFG HIITKYAYVT LGNKAFGEVK
     LGRAKTIADG ITSAEDKEYG VLNNSKYIPT NGNTVGYTFK GIDGLVLGAN YLLAQERNKY
     GTGVGEVTSQ SISNGVQVGA KYDANNIIVG IAYGRTNYRE DVSQQDDAGK KQQVNGALST
     LGYRFSDLGL LVSLDSGYAK TKNYKDKHEK RYFVSPGFQY ELMEDTNLYG NFKYERNSVD
     QGKKEREHAV LFGVDHKLHK QVLTYIEGAY ARTRTTTRDT TKNTSTVKTE KEKSVGVGLR
     VYF