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Database: UniProt
Entry: Q2JMN7_SYNJB
LinkDB: Q2JMN7_SYNJB
Original site: Q2JMN7_SYNJB 
ID   Q2JMN7_SYNJB            Unreviewed;       942 AA.
AC   Q2JMN7;
DT   07-MAR-2006, integrated into UniProtKB/TrEMBL.
DT   07-MAR-2006, sequence version 1.
DT   24-JAN-2024, entry version 132.
DE   RecName: Full=Isoleucine--tRNA ligase {ECO:0000256|HAMAP-Rule:MF_02002};
DE            EC=6.1.1.5 {ECO:0000256|HAMAP-Rule:MF_02002};
DE   AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000256|HAMAP-Rule:MF_02002};
DE            Short=IleRS {ECO:0000256|HAMAP-Rule:MF_02002};
GN   Name=ileS {ECO:0000256|HAMAP-Rule:MF_02002,
GN   ECO:0000313|EMBL:ABD02000.1};
GN   OrderedLocusNames=CYB_1022 {ECO:0000313|EMBL:ABD02000.1};
OS   Synechococcus sp. (strain JA-2-3B'a(2-13)) (Cyanobacteria bacterium
OS   Yellowstone B-Prime).
OC   Bacteria; Cyanobacteriota; Cyanophyceae; Synechococcales; Synechococcaceae;
OC   Synechococcus.
OX   NCBI_TaxID=321332 {ECO:0000313|EMBL:ABD02000.1, ECO:0000313|Proteomes:UP000001938};
RN   [1] {ECO:0000313|EMBL:ABD02000.1, ECO:0000313|Proteomes:UP000001938}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JA-2-3B'a(2-13) {ECO:0000313|Proteomes:UP000001938};
RX   PubMed=18059494; DOI=10.1038/ismej.2007.46;
RA   Bhaya D., Grossman A.R., Steunou A.S., Khuri N., Cohan F.M., Hamamura N.,
RA   Melendrez M.C., Bateson M.M., Ward D.M., Heidelberg J.F.;
RT   "Population level functional diversity in a microbial community revealed by
RT   comparative genomic and metagenomic analyses.";
RL   ISME J. 1:703-713(2007).
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_02002}.
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_02002};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_02002};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000256|HAMAP-Rule:MF_02002};
CC   -!- SUBUNIT: Monomer. {ECO:0000256|HAMAP-Rule:MF_02002}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_02002}.
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_02002}.
CC   -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC       IleS type 1 subfamily. {ECO:0000256|ARBA:ARBA00006887,
CC       ECO:0000256|HAMAP-Rule:MF_02002}.
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DR   EMBL; CP000240; ABD02000.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q2JMN7; -.
DR   STRING; 321332.CYB_1022; -.
DR   KEGG; cyb:CYB_1022; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_7_0_3; -.
DR   OMA; IHLGTAW; -.
DR   OrthoDB; 9810365at2; -.
DR   Proteomes; UP000001938; Chromosome.
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; cd07960; Anticodon_Ia_Ile_BEm; 1.
DR   CDD; cd00818; IleRS_core; 1.
DR   Gene3D; 1.10.730.20; -; 1.
DR   Gene3D; 3.40.50.620; HUPs; 2.
DR   Gene3D; 1.10.10.830; Ile-tRNA synthetase CP2 domain-like; 1.
DR   Gene3D; 3.90.740.10; Valyl/Leucyl/Isoleucyl-tRNA synthetase, editing domain; 1.
DR   HAMAP; MF_02002; Ile_tRNA_synth_type1; 1.
DR   InterPro; IPR001412; aa-tRNA-synth_I_CS.
DR   InterPro; IPR002300; aa-tRNA-synth_Ia.
DR   InterPro; IPR033708; Anticodon_Ile_BEm.
DR   InterPro; IPR002301; Ile-tRNA-ligase.
DR   InterPro; IPR023585; Ile-tRNA-ligase_type1.
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   InterPro; IPR010663; Znf_FPG/IleRS.
DR   NCBIfam; TIGR00392; ileS; 1.
DR   PANTHER; PTHR42765:SF1; ISOLEUCINE--TRNA LIGASE, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR42765; SOLEUCYL-TRNA SYNTHETASE; 1.
DR   Pfam; PF08264; Anticodon_1; 1.
DR   Pfam; PF00133; tRNA-synt_1; 1.
DR   Pfam; PF06827; zf-FPG_IleRS; 1.
DR   PRINTS; PR00984; TRNASYNTHILE.
DR   SUPFAM; SSF47323; Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases; 1.
DR   SUPFAM; SSF52374; Nucleotidylyl transferase; 1.
DR   SUPFAM; SSF50677; ValRS/IleRS/LeuRS editing domain; 1.
DR   PROSITE; PS00178; AA_TRNA_LIGASE_I; 1.
PE   3: Inferred from homology;
KW   Aminoacyl-tRNA synthetase {ECO:0000256|ARBA:ARBA00023146,
KW   ECO:0000256|HAMAP-Rule:MF_02002};
KW   ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW   Rule:MF_02002};
KW   Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_02002};
KW   Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_02002};
KW   Metal-binding {ECO:0000256|HAMAP-Rule:MF_02002};
KW   Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW   Rule:MF_02002};
KW   Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917, ECO:0000256|HAMAP-
KW   Rule:MF_02002}; Reference proteome {ECO:0000313|Proteomes:UP000001938};
KW   Zinc {ECO:0000256|HAMAP-Rule:MF_02002}.
FT   DOMAIN          27..651
FT                   /note="Aminoacyl-tRNA synthetase class Ia"
FT                   /evidence="ECO:0000259|Pfam:PF00133"
FT   DOMAIN          698..840
FT                   /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT                   anticodon-binding"
FT                   /evidence="ECO:0000259|Pfam:PF08264"
FT   DOMAIN          908..935
FT                   /note="Zinc finger FPG/IleRS-type"
FT                   /evidence="ECO:0000259|Pfam:PF06827"
FT   MOTIF           56..66
FT                   /note="'HIGH' region"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   MOTIF           606..610
FT                   /note="'KMSKS' region"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   BINDING         565
FT                   /ligand="L-isoleucyl-5'-AMP"
FT                   /ligand_id="ChEBI:CHEBI:178002"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   BINDING         609
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   BINDING         911
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   BINDING         914
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   BINDING         931
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   BINDING         934
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
SQ   SEQUENCE   942 AA;  105972 MW;  D0212D5DF6DD0935 CRC64;
     MDYKSTLNLP QTQFPMRAEA AKREPAIQAF WQEEQIYQRL ADHNPGDPFV LHDGPPYANG
     DIHMGTTLNK ILKDIVNKYH ILQGRKVRYV PGWDCHGLPI ELKVLQSLTP QERENLTPLQ
     LRQKAKEYAL HYVDVQRASF QRLGVWGSWD RPYLTLSPEY EAAQIEVFGQ MALKGYIYRG
     LKPVHWSPSS QTALAEAELE YPDNHISPSI YVAFPLQSLS PAAQPVLEPF MPGLRAAIWT
     TTPWTIPANL ALCFNPKLTY AVVESPRFGL LLIAADLRER LEKVLETPLE IKATLPGSAL
     EYSQGRHPLF DRASLCVLGD YVTTESGTGI VHTAPGHGED DFKTGQKYGL PILSPVDDQG
     RFTAEAGSQF VGLDVLSKKP ETSGNAAVIQ ALQAAGALLK EEPYNHKYPY DWRTKEPTIF
     RATEQWFASV AGFRELALQA IKTVKWIPAI GENRITAMVS ERSDWCISRQ RAWGVPIPVF
     YDEETGEPLL TAETLDHIKA IFAQEGSDAW WKRPVEELLP EKYRHNGRTY RKGMDTMDVW
     FDSGSSWAAV AKAQGLGYPV DLYLEGSDQH RGWFQSSLLT SVAVNGHAPY KAVLTHGFVL
     DEKGQKMSKS LGNVIDPLVL INGGKDPQTD PAYGADVLRL WVSSVDYSGD VPLGKTILGQ
     MADVYRKIRN TARFLLSNLY DFNPTQDAVP FAALTELDRY ILHRLHEVGS EIGESFASYQ
     FYRFFQAIQN FCVVDLSNFY LDIAKDRLYI SHAQSLRRRQ CQTVLSLLLE NLAKAIAPVL
     SHLAEEIWSH LPYPKPTRSV FEGGWMKLPE HWRDPQLAAI WEQLREVRQE VNKALEQART
     GRVSGTESFK PIGASTEAKV ILKVADPSLY ALLQERAAEL RYLFITSQVE LEKTSGQGLE
     VSVFPADGQK CVRCWNYSTR VGEFAEHPEL CERCVAALAG EF
//
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