ID   FBPB_SERMA              Reviewed;         527 AA.
AC   P21409;
DT   01-MAY-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 2.
DT   25-MAY-2022, entry version 90.
DE   RecName: Full=Fe(3+)-transport system permease protein SfuB;
DE   AltName: Full=Iron(III)-transport system permease protein SfuB;
GN   Name=fbpB; Synonyms=sfuB;
OS   Serratia marcescens.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Serratia.
OX   NCBI_TaxID=615;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=2404942; DOI=10.1128/jb.172.2.572-578.1990;
RA   Angerer A., Gaisser S., Braun V.;
RT   "Nucleotide sequences of the sfuA, sfuB, and sfuC genes of Serratia
RT   marcescens suggest a periplasmic-binding-protein-dependent iron transport
RT   mechanism.";
RL   J. Bacteriol. 172:572-578(1990).
CC   -!- FUNCTION: Part of the ABC transporter complex FbpABC (TC 3.A.1.10.1)
CC       involved in Fe(3+) ions import. Probably responsible for the
CC       translocation of the substrate across the membrane (By similarity).
CC       {ECO:0000250}.
CC   -!- SUBUNIT: The complex is composed of two ATP-binding proteins (FbpC),
CC       two transmembrane proteins (FbpB) and a solute-binding protein (FbpA).
CC       {ECO:0000305}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000305}; Multi-pass
CC       membrane protein {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the binding-protein-dependent transport system
CC       permease family. FbpB subfamily. {ECO:0000305}.
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DR   EMBL; M33815; AAA26574.1; -; Genomic_DNA.
DR   PIR; B35108; QRSEUB.
DR   AlphaFoldDB; P21409; -.
DR   SMR; P21409; -.
DR   STRING; 273526.SMDB11_1780; -.
DR   TCDB; 3.A.1.10.1; the atp-binding cassette (abc) superfamily.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0006811; P:ion transport; IEA:UniProtKB-KW.
DR   GO; GO:0055072; P:iron ion homeostasis; IEA:UniProtKB-KW.
DR   GO; GO:0055085; P:transmembrane transport; IEA:InterPro.
DR   CDD; cd06261; TM_PBP2; 2.
DR   Gene3D; 1.10.3720.10; -; 2.
DR   InterPro; IPR000515; MetI-like.
DR   InterPro; IPR035906; MetI-like_sf.
DR   Pfam; PF00528; BPD_transp_1; 2.
DR   SUPFAM; SSF161098; SSF161098; 2.
DR   PROSITE; PS50928; ABC_TM1; 2.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Ion transport; Iron; Iron transport;
KW   Membrane; Repeat; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..527
FT                   /note="Fe(3+)-transport system permease protein SfuB"
FT                   /id="PRO_0000060019"
FT   TRANSMEM        27..47
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        75..95
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        107..127
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        139..159
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        191..211
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        236..256
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        284..304
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        333..353
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        368..388
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        396..416
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        449..469
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        497..517
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   REPEAT          10..15
FT                   /note="Type-1; approximate"
FT   REPEAT          66..70
FT                   /note="Type-2; approximate"
FT   DOMAIN          71..254
FT                   /note="ABC transmembrane type-1 1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   REPEAT          167..177
FT                   /note="Type-3; approximate"
FT   REPEAT          274..280
FT                   /note="Type-1; approximate"
FT   REPEAT          319..323
FT                   /note="Type-2; approximate"
FT   DOMAIN          327..517
FT                   /note="ABC transmembrane type-1 2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   REPEAT          428..438
FT                   /note="Type-3; approximate"
SQ   SEQUENCE   527 AA;  56528 MW;  6B8154D100DB0504 CRC64;
     MSNLSTHAAQ TARRYSVVPR HPRPGAIVVV SAVLLSLLAL LPLGFVIGVA FETGWQTVKA
     LVFRPRVAEL LLNTLLLVVL TLPICAVLGV ALAWLTERTT LPGRRLWAVL ATAPLAVPAF
     VQSYAWISLV PSMHGLGAGV FISVLAYFPF IYLPAAAVLR RLDPGIEDVA TSLGSRPPAV
     FFRVVLPQLK LAVCGGSLLI ALHLLAEYGL YAMIRFDTFT TAIFDQFQST FNGPAANMLA
     GVLVLCCLGL LLLEAISRGR ARYARVGSGS ARSQTPRRLS PPLAALALLL PIALTALALG
     VPFITLARWL WLGGFEVWRN AELWPALWQT LSLSAAGALL ITLCAIPMAW LSVRYPARLY
     RVLEGCNYVT SSLPGIVVAL ALVTITIHSF RPIYQTEITL LLAYLLMFMP RALINLRAGI
     AQAPVELENV ARSLGKSPAQ ALWSTTLRLA APGVAAGAAL VFLAIANELT ATLLLAPNGT
     RTLATGFWAL TSEIDYVAAA PYALIMVALS LPLTWLLYSQ SKRTAGL