ID   FLGI_BUCAI              Reviewed;         372 AA.
AC   P57426;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2000, sequence version 1.
DT   25-MAY-2022, entry version 85.
DE   RecName: Full=Flagellar P-ring protein;
DE   AltName: Full=Basal body P-ring protein;
DE   Flags: Precursor;
GN   Name=flgI; OrderedLocusNames=BU344;
OS   Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon
OS   pisum symbiotic bacterium).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=107806;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=APS;
RX   PubMed=10993077; DOI=10.1038/35024074;
RA   Shigenobu S., Watanabe H., Hattori M., Sakaki Y., Ishikawa H.;
RT   "Genome sequence of the endocellular bacterial symbiont of aphids Buchnera
RT   sp. APS.";
RL   Nature 407:81-86(2000).
CC   -!- FUNCTION: Assembles around the rod to form the L-ring and probably
CC       protects the motor/basal body from shearing forces during rotation.
CC       {ECO:0000250}.
CC   -!- SUBUNIT: The basal body constitutes a major portion of the flagellar
CC       organelle and consists of four rings (L,P,S, and M) mounted on a
CC       central rod. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Bacterial flagellum basal body {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the FlgI family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=BAB13049.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; BA000003; BAB13049.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; NP_240163.1; NC_002528.1.
DR   AlphaFoldDB; P57426; -.
DR   SMR; P57426; -.
DR   STRING; 107806.10039015; -.
DR   EnsemblBacteria; BAB13049; BAB13049; BAB13049.
DR   KEGG; buc:BU344; -.
DR   PATRIC; fig|107806.10.peg.356; -.
DR   eggNOG; COG1706; Bacteria.
DR   HOGENOM; CLU_045235_1_0_6; -.
DR   OMA; KTIQITR; -.
DR   Proteomes; UP000001806; Chromosome.
DR   GO; GO:0009428; C:bacterial-type flagellum basal body, distal rod, P ring; IEA:InterPro.
DR   GO; GO:0030288; C:outer membrane-bounded periplasmic space; IEA:InterPro.
DR   GO; GO:0005198; F:structural molecule activity; IEA:InterPro.
DR   GO; GO:0071973; P:bacterial-type flagellum-dependent cell motility; IEA:InterPro.
DR   HAMAP; MF_00416; FlgI; 1.
DR   InterPro; IPR001782; Flag_FlgI.
DR   PANTHER; PTHR30381; PTHR30381; 1.
DR   Pfam; PF02119; FlgI; 1.
DR   PRINTS; PR01010; FLGPRINGFLGI.
PE   3: Inferred from homology;
KW   Bacterial flagellum; Reference proteome; Signal.
FT   SIGNAL          1..25
FT                   /evidence="ECO:0000255"
FT   CHAIN           26..372
FT                   /note="Flagellar P-ring protein"
FT                   /id="PRO_0000009495"
SQ   SEQUENCE   372 AA;  40944 MW;  CCF74D2E1B294835 CRC64;
     MSKKILFLIK VIVFIFTTFS LPLYAEKIRD LTSIQGIRDN PLIGYGLIVG LDGTGDQSTQ
     APFTNQSLKN MLSQLGVSIP SNTNMNTKNV AAVIVTANLP PFSHAGEKID VVVSSMGNAR
     SLKGGTLLMT PLKGANNQIY AIAQGNILVS EKNNKKSKIH NFYSNQVNSG KIHHGATIER
     EIDNNFGKQK TINLQLNQEN FSTAQRISDM INTKYPDTAT PINSKTVQLN TSANNDVQVH
     MLSNIQDIDI SLPSQEAKVV VNSRTGSIVI NQSVRLGSCV VSNGNMSIIV HQIKNKKRDL
     YFLKSFNKNI KKDQSIEDMA DKNYMNDIAT NKENLHNIVR ALNKLGTKPD ELMSILQLMK
     SAGCLNAKLE IV