ID   OM3A_RHILV              Reviewed;         366 AA.
AC   Q05811;
DT   01-OCT-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1994, sequence version 1.
DT   25-MAY-2022, entry version 69.
DE   RecName: Full=Outer membrane protein IIIA;
DE            Short=OMPIIIA;
DE   Flags: Precursor;
GN   Name=ropA;
OS   Rhizobium leguminosarum bv. viciae.
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Rhizobiaceae; Rhizobium/Agrobacterium group; Rhizobium.
OX   NCBI_TaxID=387;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], PROTEIN SEQUENCE OF 23-31, SUBUNIT,
RP   SUBCELLULAR LOCATION, AND DEVELOPMENTAL STAGE.
RC   STRAIN=248;
RX   PubMed=1370281; DOI=10.1128/jb.174.1.214-221.1992;
RA   de Maagd R.A., Mulders I.H.M., Canter Cremers H.C.J., Lugtenberg B.J.J.;
RT   "Cloning, nucleotide sequencing, and expression in Escherichia coli of a
RT   Rhizobium leguminosarum gene encoding a symbiotically repressed outer
RT   membrane protein.";
RL   J. Bacteriol. 174:214-221(1992).
CC   -!- FUNCTION: May act as an outer membrane pore.
CC       {ECO:0000250|UniProtKB:B2SAB9}.
CC   -!- SUBUNIT: Forms calcium-stabilized oligomers.
CC       {ECO:0000269|PubMed:1370281}.
CC   -!- SUBCELLULAR LOCATION: Cell outer membrane {ECO:0000269|PubMed:1370281}.
CC   -!- DEVELOPMENTAL STAGE: Repressed in the bacteroid form during symbiosis.
CC       {ECO:0000269|PubMed:1370281}.
CC   -!- PTM: Attached covalently to peptidoglycan.
CC   -!- SIMILARITY: Belongs to the alphaproteobacteria porin family.
CC       {ECO:0000305}.
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DR   EMBL; M69214; AAA20488.1; ALT_SEQ; Genomic_DNA.
DR   PIR; A43303; A43303.
DR   AlphaFoldDB; Q05811; -.
DR   TCDB; 1.B.70.1.2; the outer membrane channel (omc) family.
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   InterPro; IPR003684; Porin_alphabac.
DR   Pfam; PF02530; Porin_2; 1.
PE   1: Evidence at protein level;
KW   Cell outer membrane; Direct protein sequencing; Ion transport; Membrane;
KW   Porin; Signal; Transmembrane; Transmembrane beta strand; Transport.
FT   SIGNAL          1..22
FT                   /evidence="ECO:0000269|PubMed:1370281"
FT   CHAIN           23..366
FT                   /note="Outer membrane protein IIIA"
FT                   /id="PRO_0000021886"
SQ   SEQUENCE   366 AA;  38970 MW;  6CC4A4E5CDC91381 CRC64;
     MNIRMVLLAS AAAFAASTPV LAADAIVAAE PEPVEYVRVC DAYGTGYFYI PGTETCLKIE
     GYIRFQVNVG DNPGGDNDSD WDAVTAVRFS SRKSDTEYGP LTGVIVMQFN ADNASDQDAI
     LDSAYLDVAG FRAGLFYSWW DDGLSGETDD IGSVVTLHNS IRYQYESGTF YAGLSVDELE
     DGVYQGTFTP GVIPGTTDFT ADDGPNNVGV AFGIGGTAGA FSYQVTGGWD VDNEDGAIRA
     MGTVEIGPGT FGLAGVYSSG PNSYYSSAEW AVAAEYAIKA TDKLKITPGR WHGHVPEDFD
     GLGDAWKVGL TVDYQIVENF YAKASVQYLD PQDGEDSTSG YFACSVRSNH LVDAPGLRIG
     STTISF