ID A0A0U5H3G7_9EURY Unreviewed; 1064 AA.
AC A0A0U5H3G7;
DT 16-MAR-2016, integrated into UniProtKB/TrEMBL.
DT 16-MAR-2016, sequence version 1.
DT 24-JAN-2024, entry version 34.
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 ECO:0000313|EMBL:CQH61561.1};
GN ORFNames=HHUB_3484 {ECO:0000313|EMBL:CQH61561.1};
OS Halobacterium hubeiense.
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Halobacteriales;
OC Halobacteriaceae; Halobacterium.
OX NCBI_TaxID=1407499 {ECO:0000313|EMBL:CQH61561.1, ECO:0000313|Proteomes:UP000066737};
RN [1] {ECO:0000313|Proteomes:UP000066737}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=JI20-1 {ECO:0000313|Proteomes:UP000066737};
RX PubMed=26628271; DOI=10.1111/1462-2920.13130;
RA Jaakkola S.T., Pfeiffer F., Ravantti J.J., Guo Q., Liu Y., Chen X., Ma H.,
RA Yang C., Oksanen H.M., Bamford D.H.;
RT "The complete genome of a viable archaeum isolated from 123-million-year-
RT old rock salt.";
RL Environ. Microbiol. 18:565-579(2016).
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|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 ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; LN831302; CQH61561.1; -; Genomic_DNA.
DR RefSeq; WP_059057824.1; NZ_LN831302.1.
DR AlphaFoldDB; A0A0U5H3G7; -.
DR STRING; 1407499.HHUB_3484; -.
DR GeneID; 26660096; -.
DR KEGG; hhb:Hhub_3484; -.
DR OrthoDB; 30823at2157; -.
DR Proteomes; UP000066737; Chromosome I.
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:UP000066737};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_02003}.
FT DOMAIN 20..645
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 701..848
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 605..609
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT BINDING 608
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
SQ SEQUENCE 1064 AA; 121505 MW; 7573461D59BAF013 CRC64;
MSRFADVPDQ YDPEDVEDRV FDYWEAVDAY EQAKQHRADG EDFFFVDGPP YTSGAAHMGT
TWNKTLKDAY IRYHRMQGYD VTDRPGYDMH GLPIETKVEE ELGFESKKDI EEYGEQKFIE
ACKEFADRNL EGLQADFQSF GVWMDWENPY KTVDPSYMEA AWWAFDRVHE RDLVERGKRS
ISQCPRCETA IANNEVEYDD VEDPSIYVTF DLDDREGSLV VWTTTPWTIP ANEYVAVDED
GTYQQVRATK DGEEDVLYVA EECVEDVLTA GRYDDYEVVE TFSGSHMLGW SYTPPLAEEV
PANPVGADGT HEVYHGDWVE ADRTGLVHSA PGHGEEDFAR GEELGLPVFC PVGEDGVYTA
EAGEYEGQFV RDANDDIIDD LSEKGALLAE ETVTHSYGHC WRCDTGIIQI VTDQWFITIT
DVKDELLENM EDSEWHPQWA RDNRFRDFVE DAPDWNVSRQ RYWGIPVPIW TPEDWSGDMD
DVLVVGTREE LAELADQDVD PETVDLHKDT VDDLTITHEG TTYTRVPDVF DVWLDSSVAS
WGTLNYPEEE EAFEELWPAD LIMEAHDQTR GWFWSQLGMG TAAMGEIPYD EVLMHGYANM
PDGRGMSKSK GITIEPNEVI EEYGADPMRL FLLSVSPQGQ DMRFSWDETE NMQRDLNILW
NVFRFPRPYM AMDDFDANVP EPFGGDGSGV SVNDVHLETV DQWLLSTLQR VKADATDHWE
AFEQHKALDE ILEFVTGDLS RYYVQVVRER MWEEGDSESK TAAYATLQRA LLEVTAMLAP
YAPLVTDELY QHLTDGDAYD TVHMCDWPEV EERYRQPALE DDVAALRDIE EAGSHARQQA
GRKLRWPVTR IVVDADDDRV ASAVRDHPSL LRDRLNARRI EVVDEGENWD ELAFSARADM
SVLGPAFGDD AGEVMQALND AHVESADLDA LAEQVSEELG RDIELTPEMV EFVEEAPEHV
AGADFDGGTV YVDTELDEDV ESEGYAREVI RRVQEMRKDL DLAMDAEIRL DVVVFDDRVA
RLVSEHEDLI EEETRARELG EVEDGYREEW DVEGTKMALE IEEL
//
