ID B7ULE9_ECO27 Unreviewed; 614 AA.
AC B7ULE9;
DT 10-FEB-2009, integrated into UniProtKB/TrEMBL.
DT 10-FEB-2009, sequence version 1.
DT 28-JAN-2026, entry version 86.
DE RecName: Full=Selenocysteine-specific elongation factor {ECO:0000256|ARBA:ARBA00015953};
DE AltName: Full=SelB translation factor {ECO:0000256|ARBA:ARBA00031615};
GN Name=selB {ECO:0000313|EMBL:CAS11388.1};
GN OrderedLocusNames=E2348C_3840 {ECO:0000313|EMBL:CAS11388.1};
OS Escherichia coli O127:H6 (strain E2348/69 / EPEC).
OC Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC Enterobacterales; Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=574521 {ECO:0000313|EMBL:CAS11388.1, ECO:0000313|Proteomes:UP000008205};
RN [1] {ECO:0000313|EMBL:CAS11388.1, ECO:0000313|Proteomes:UP000008205}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=E2348/69 / EPEC {ECO:0000313|Proteomes:UP000008205};
RX PubMed=18952797; DOI=10.1128/JB.01238-08;
RA Iguchi A., Thomson N.R., Ogura Y., Saunders D., Ooka T., Henderson I.R.,
RA Harris D., Asadulghani M., Kurokawa K., Dean P., Kenny B., Quail M.A.,
RA Thurston S., Dougan G., Hayashi T., Parkhill J., Frankel G.;
RT "Complete genome sequence and comparative genome analysis of
RT enteropathogenic Escherichia coli O127:H6 strain E2348/69.";
RL J. Bacteriol. 191:347-354(2009).
CC -!- FUNCTION: Translation factor necessary for the incorporation of
CC selenocysteine into proteins. It probably replaces EF-Tu for the
CC insertion of selenocysteine directed by the UGA codon. SelB binds GTP
CC and GDP. {ECO:0000256|ARBA:ARBA00025526}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|ARBA:ARBA00004496}.
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DR EMBL; FM180568; CAS11388.1; -; Genomic_DNA.
DR RefSeq; WP_000582427.1; NC_011601.1.
DR AlphaFoldDB; B7ULE9; -.
DR KEGG; ecg:E2348C_3840; -.
DR HOGENOM; CLU_023030_2_0_6; -.
DR Proteomes; UP000008205; Chromosome.
DR GO; GO:0005829; C:cytosol; IEA:TreeGrafter.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR GO; GO:0003924; F:GTPase activity; IEA:InterPro.
DR GO; GO:0035368; F:selenocysteine insertion sequence binding; IEA:TreeGrafter.
DR GO; GO:0003746; F:translation elongation factor activity; IEA:InterPro.
DR GO; GO:0000049; F:tRNA binding; IEA:TreeGrafter.
DR GO; GO:0001514; P:selenocysteine incorporation; IEA:InterPro.
DR GO; GO:0016259; P:selenocysteine metabolic process; IEA:TreeGrafter.
DR CDD; cd04171; SelB; 1.
DR CDD; cd03696; SelB_II; 1.
DR CDD; cd15491; selB_III; 1.
DR FunFam; 1.10.10.10:FF:000350; Selenocysteine-specific translation elongation factor; 1.
DR FunFam; 2.40.30.10:FF:000080; Selenocysteine-specific translation elongation factor; 1.
DR FunFam; 3.40.50.300:FF:001064; Selenocysteine-specific translation elongation factor; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR Gene3D; 2.40.30.10; Translation factors; 1.
DR Gene3D; 1.10.10.10; Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain; 2.
DR InterPro; IPR057335; Beta-barrel_SelB.
DR InterPro; IPR004161; EFTu-like_2.
DR InterPro; IPR050543; eIF2G.
DR InterPro; IPR015190; Elong_fac_SelB-wing-hlx_typ-2.
DR InterPro; IPR031157; G_TR_CS.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR015191; SelB_WHD4.
DR InterPro; IPR000795; T_Tr_GTP-bd_dom.
DR InterPro; IPR009000; Transl_B-barrel_sf.
DR InterPro; IPR009001; Transl_elong_EF1A/Init_IF2_C.
DR InterPro; IPR004535; Transl_elong_SelB.
DR InterPro; IPR036388; WH-like_DNA-bd_sf.
DR InterPro; IPR036390; WH_DNA-bd_sf.
DR InterPro; IPR048649; WHD_1st_3rd_SelB.
DR InterPro; IPR048931; WHD_2nd_SelB_bact.
DR NCBIfam; TIGR00475; selB; 1.
DR PANTHER; PTHR42854; EUKARYOTIC TRANSLATION INITIATION FACTOR 2 SUBUNIT 3 FAMILY MEMBER; 1.
DR PANTHER; PTHR42854:SF3; EUKARYOTIC TRANSLATION INITIATION FACTOR 2 SUBUNIT 3-RELATED; 1.
DR Pfam; PF25461; Beta-barrel_SelB; 1.
DR Pfam; PF00009; GTP_EFTU; 1.
DR Pfam; PF03144; GTP_EFTU_D2; 1.
DR Pfam; PF21458; WHD_1st_3rd_SelB; 1.
DR Pfam; PF09106; WHD_2nd_SelB; 1.
DR Pfam; PF21214; WHD_2nd_SelB_bact; 1.
DR Pfam; PF09107; WHD_3rd_SelB; 1.
DR PRINTS; PR00315; ELONGATNFCT.
DR SUPFAM; SSF50465; EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR SUPFAM; SSF50447; Translation proteins; 1.
DR SUPFAM; SSF46785; Winged helix' DNA-binding domain; 3.
DR PROSITE; PS00301; G_TR_1; 1.
DR PROSITE; PS51722; G_TR_2; 1.
PE 4: Predicted;
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490};
KW GTP-binding {ECO:0000256|ARBA:ARBA00023134};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741};
KW Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917};
KW Reference proteome {ECO:0000313|Proteomes:UP000008205}.
FT DOMAIN 1..173
FT /note="Tr-type G"
FT /evidence="ECO:0000259|PROSITE:PS51722"
SQ SEQUENCE 614 AA; 68760 MW; 77EC4B5F89987F5E CRC64;
MIIATAGHVD HGKTTLLQAI TGVNADRLPE EKKRGMTIDL GYAYWPQPDG RVPGFIDVPG
HEKFLSNMLA GVGGIDHALL VVACDDGVMA QTREHLAILQ LTGNPMLTVA LTKADRVDEA
RVDEVERQVK EVLREYGFAE AKLFITAATE GRGIDALREH LLQLPEREHA SQHSFRLAID
RAFTVKGAGL VVTGTALSGE VKVGDSLWLT GVNKPMRVRA LHAQNQPTET AHAGQRIALN
IAGDAEKEQI NRGDWLLADA PPEPFTRVIV ELQTHTPLTQ WQPLHIHHAA SHVTGRVSLL
EDNLAELVFD TPLWLADNDR LVLRDISARN TLAGARVVML NPPRRGKRKP EYLQWLASLA
QAQSDADALS VHLERGAVNL ADFAWARQLN GEGMRELLQQ PGYIQAGYSL LNAPVAARWQ
RKILDTLATY HEQYRDEPGP GRERLRRMAL PMEDEALVLL LIEKMRESGD ILSHHGWLHL
PDHKAGFSAE QQAIWQKAEP LFGDEPWWVR DLAKETGTDE QAMRLTLRQA AQQGIITAIV
KDRYYRNDRI VEFANMIRDL DQECGSTCAA DFRDRLGVGR KLAIQILEYF DRIGFTRRRG
NDHLLRDALL FPEK
//
