ID   OPP21_HAEIN             Reviewed;         359 AA.
AC   P43839;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   03-AUG-2022, entry version 117.
DE   RecName: Full=Outer membrane protein P2;
DE            Short=OMP P2;
DE   Flags: Precursor;
GN   Name=ompP2; OrderedLocusNames=HI_0139;
OS   Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Haemophilus.
OX   NCBI_TaxID=71421;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51907 / DSM 11121 / KW20 / Rd;
RX   PubMed=7542800; DOI=10.1126/science.7542800;
RA   Fleischmann R.D., Adams M.D., White O., Clayton R.A., Kirkness E.F.,
RA   Kerlavage A.R., Bult C.J., Tomb J.-F., Dougherty B.A., Merrick J.M.,
RA   McKenney K., Sutton G.G., FitzHugh W., Fields C.A., Gocayne J.D.,
RA   Scott J.D., Shirley R., Liu L.-I., Glodek A., Kelley J.M., Weidman J.F.,
RA   Phillips C.A., Spriggs T., Hedblom E., Cotton M.D., Utterback T.R.,
RA   Hanna M.C., Nguyen D.T., Saudek D.M., Brandon R.C., Fine L.D.,
RA   Fritchman J.L., Fuhrmann J.L., Geoghagen N.S.M., Gnehm C.L., McDonald L.A.,
RA   Small K.V., Fraser C.M., Smith H.O., Venter J.C.;
RT   "Whole-genome random sequencing and assembly of Haemophilus influenzae
RT   Rd.";
RL   Science 269:496-512(1995).
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; L42023; AAC21810.1; -; Genomic_DNA.
DR   PIR; D64050; D64050.
DR   RefSeq; NP_438308.1; NC_000907.1.
DR   RefSeq; WP_005694426.1; NC_000907.1.
DR   AlphaFoldDB; P43839; -.
DR   SMR; P43839; -.
DR   STRING; 71421.HI_0139; -.
DR   EnsemblBacteria; AAC21810; AAC21810; HI_0139.
DR   KEGG; hin:HI_0139; -.
DR   PATRIC; fig|71421.8.peg.141; -.
DR   eggNOG; COG3203; Bacteria.
DR   HOGENOM; CLU_058202_1_1_6; -.
DR   OMA; VGLRVYF; -.
DR   BioCyc; HINF71421:G1GJ1-151-MON; -.
DR   Proteomes; UP000000579; Chromosome.
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; Reference proteome;
KW   Signal; Transmembrane; Transmembrane beta strand; Transport.
FT   SIGNAL          1..20
FT                   /evidence="ECO:0000250"
FT   CHAIN           21..359
FT                   /note="Outer membrane protein P2"
FT                   /id="PRO_0000025258"
SQ   SEQUENCE   359 AA;  39375 MW;  7E9EFFFC2BD50314 CRC64;
     MKKTLAALIV GAFAASAANA AVVYNNEGTN VELGGRLSII AEQSNSTVDN QKQQHGALRN
     QGSRFHIKAT HNFGDGFYAQ GYLETRFVTK ASENGSDNFG DITSKYAYVT LGNKAFGEVK
     LGRAKTIADG ITSAEDKEYG VLNNSDYIPT SGNTVGYTFK GIDGLVLGAN YLLAQKREGA
     KNTNKQPNDK AGEVRIGEIN NGIQVGAKYD ANDIVAKIAY GRTNYKYNEA DEHTQQLNGV
     LATLGYRFSD LGLLVSLDSG YAKTKNYKTK HEKRYFVSPG FQYELMEDTN VYGNFKYERT
     SVDQGEKTRE QAVLFGVDHK LHKQLLTYIE GAYARTKTTN GGVKTEKEKS VGVGLRVYF