ID A0A257K729_9FLAO Unreviewed; 1133 AA.
AC A0A257K729;
DT 20-DEC-2017, integrated into UniProtKB/TrEMBL.
DT 20-DEC-2017, sequence version 1.
DT 24-JAN-2024, entry version 19.
DE RecName: Full=Isoleucine--tRNA ligase {ECO:0000256|HAMAP-Rule:MF_02003};
DE EC=6.1.1.5 {ECO:0000256|HAMAP-Rule:MF_02003};
DE AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000256|HAMAP-Rule:MF_02003};
DE Short=IleRS {ECO:0000256|HAMAP-Rule:MF_02003};
GN Name=ileS {ECO:0000256|HAMAP-Rule:MF_02003};
GN ORFNames=CFE24_12985 {ECO:0000313|EMBL:OYU83068.1};
OS Flavobacterium sp. BFFFF2.
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales;
OC Flavobacteriaceae; Flavobacterium.
OX NCBI_TaxID=2015558 {ECO:0000313|EMBL:OYU83068.1, ECO:0000313|Proteomes:UP000216176};
RN [1] {ECO:0000313|EMBL:OYU83068.1, ECO:0000313|Proteomes:UP000216176}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BFFFF2 {ECO:0000313|EMBL:OYU83068.1};
RA Kojadinovic M., Villain A., Puppo C., Fon Sing S., Prioretti L., Hubert P.,
RA Gregori G., Zhang Y., Sassi J.-F., Claverie J.-M., Blanc G., Gontero B.;
RT "A metagenomic investigation of the 'star' freshwater diatom Asterionella
RT formosa and its bacterial cohort.";
RL Submitted (JUN-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the attachment of isoleucine to tRNA(Ile). As IleRS
CC can inadvertently accommodate and process structurally similar amino
CC acids such as valine, to avoid such errors it has two additional
CC distinct tRNA(Ile)-dependent editing activities. One activity is
CC designated as 'pretransfer' editing and involves the hydrolysis of
CC activated Val-AMP. The other activity is designated 'posttransfer'
CC editing and involves deacylation of mischarged Val-tRNA(Ile).
CC {ECO:0000256|ARBA:ARBA00025217, ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-isoleucine + tRNA(Ile) = AMP + diphosphate + L-
CC isoleucyl-tRNA(Ile); Xref=Rhea:RHEA:11060, Rhea:RHEA-COMP:9666,
CC Rhea:RHEA-COMP:9695, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:58045, ChEBI:CHEBI:78442, ChEBI:CHEBI:78528,
CC ChEBI:CHEBI:456215; EC=6.1.1.5;
CC Evidence={ECO:0000256|ARBA:ARBA00000114, ECO:0000256|HAMAP-
CC Rule:MF_02003};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_02003};
CC -!- SUBUNIT: Monomer. {ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- DOMAIN: IleRS has two distinct active sites: one for aminoacylation and
CC one for editing. The misactivated valine is translocated from the
CC active site to the editing site, which sterically excludes the
CC correctly activated isoleucine. The single editing site contains two
CC valyl binding pockets, one specific for each substrate (Val-AMP or Val-
CC tRNA(Ile)). {ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC IleS type 2 subfamily. {ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:OYU83068.1}.
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DR EMBL; NKJD01000051; OYU83068.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A257K729; -.
DR Proteomes; UP000216176; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0002161; F:aminoacyl-tRNA editing activity; IEA:InterPro.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004822; F:isoleucine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000049; F:tRNA binding; IEA:InterPro.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0006428; P:isoleucyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR CDD; cd07961; Anticodon_Ia_Ile_ABEc; 1.
DR CDD; cd00818; IleRS_core; 1.
DR Gene3D; 3.40.50.620; HUPs; 2.
DR Gene3D; 3.90.740.10; Valyl/Leucyl/Isoleucyl-tRNA synthetase, editing domain; 1.
DR HAMAP; MF_02003; Ile_tRNA_synth_type2; 1.
DR InterPro; IPR002300; aa-tRNA-synth_Ia.
DR InterPro; IPR033709; Anticodon_Ile_ABEc.
DR InterPro; IPR002301; Ile-tRNA-ligase.
DR InterPro; IPR023586; Ile-tRNA-ligase_type2.
DR InterPro; IPR013155; M/V/L/I-tRNA-synth_anticd-bd.
DR InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR InterPro; IPR009080; tRNAsynth_Ia_anticodon-bd.
DR InterPro; IPR009008; Val/Leu/Ile-tRNA-synth_edit.
DR NCBIfam; TIGR00392; ileS; 1.
DR PANTHER; PTHR42780:SF1; ISOLEUCINE--TRNA LIGASE, CYTOPLASMIC; 1.
DR PANTHER; PTHR42780; SOLEUCYL-TRNA SYNTHETASE; 1.
DR Pfam; PF08264; Anticodon_1; 1.
DR Pfam; PF19302; DUF5915; 1.
DR Pfam; PF00133; tRNA-synt_1; 1.
DR PRINTS; PR00984; TRNASYNTHILE.
DR SUPFAM; SSF47323; Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases; 2.
DR SUPFAM; SSF52374; Nucleotidylyl transferase; 1.
DR SUPFAM; SSF50677; ValRS/IleRS/LeuRS editing domain; 1.
PE 3: Inferred from homology;
KW Aminoacyl-tRNA synthetase {ECO:0000256|ARBA:ARBA00023146,
KW ECO:0000256|HAMAP-Rule:MF_02003};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_02003}; Cytoplasm {ECO:0000256|HAMAP-Rule:MF_02003};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_02003};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_02003};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_02003};
KW Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917, ECO:0000256|HAMAP-
KW Rule:MF_02003}; Reference proteome {ECO:0000313|Proteomes:UP000216176};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_02003}.
FT DOMAIN 20..720
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 769..921
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT MOTIF 50..60
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT MOTIF 682..686
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT BINDING 685
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
SQ SEQUENCE 1133 AA; 128667 MW; EF067B601B7C2B7A CRC64;
MMTRFPEYKS LDLPVIAQEV LSYWKTNDVF EKSIQEREGC TPYVFFEGPP SANGLPGIHH
VMARAIKDIF CRYKTQKGFQ VKRKAGWDTH GLPVELGTEK ELGITKEDIG KTISISEYNE
ACKRTVMRYT DVWNDLTEKM GYWVDMNDPY VTYTSKYMES VWWLLQQIYN KKLMYKGYTI
QPYSPKAGTG LSSHEVNQPG TYRDVTDTTV VAQFKALPNS LPAFLQSFGD IHFLAWTTTP
WTLPSNTALT VGPKIEYVLV KTFNQYTFEP VQVILGKPLL SKVFGGKFFP AESEADFAAY
KADDKKIPYQ IIAESKGADL VGIRYEQLLP WVLPYQQPEN AFRVIAGDFV TTEDGTGIVH
TAPTFGADDA KVAKEASPEV PPMLVLDENG HPVPLVDLQG RFVKGLGAWS GKYVKNEYYN
DGEAPEKSVD VEIAILLKEE NKAFKVEKYV HSYPHCWRTD KPILYYPLDS WFIKITDVKD
RMFDLNETIN WKPKATGEGR FGNWLKNAND WNLSRSRYWG IPLPIWRTED KSEEMCIGSV
AELCQEIEKS VQAGVMNQNP YQGFELNNMD EANYALVDLH KNVVDDIVLV SASGKPMNRE
TDLIDVWFDS GAMPYAQWHY PFENKDLIEK GSSFPADFIA EGVDQTRGWF YTLHAIGTLV
FDQVAYKNVV SNGLVLDKNG QKMSKRLGNA VDPFETLREY GPDATRWYMI ANANPWDNLK
FDIEGVAEVR RKFFGTLYNT YSFFALYANI DGFSYNEPEI PLAERPEIDR WILSELHSLI
ALVDDSYADY EPTKAARAIS EFVQEHLSNW YVRLCRRRFW KGEYGPDKIA AYQTLYTCLL
TVSKLAAPIA PFFMERLYKD LMAPTNSDQA DSVHLADFPV FVDNCVDKSL ESKMMKAQTI
SSLVLSLRKK EMIKVRQPLQ KVMIPALNAG FRAEIEAVAE LIKAEVNVKE IDILDDASGI
LTKQIKPNFK VLGPRFGKDI NLISKEIQAL SQEQINDLDK NGSIEISFGE NCILLASEEV
EITSQDIPGW LVASAQGITV ALDITLNPAL IQEGIAREMV NRIQNLRKDS GFDVTDTIVV
TLEDHSELKE ALEVNADYIK AETLTRELRF EPTVENGTVI EFENIKTRIV ISK
//
