ID SYI_FUSNN Reviewed; 933 AA.
AC Q8RH47;
DT 20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2002, sequence version 1.
DT 27-MAR-2024, entry version 127.
DE RecName: Full=Isoleucine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_02002};
DE EC=6.1.1.5 {ECO:0000255|HAMAP-Rule:MF_02002};
DE AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_02002};
DE Short=IleRS {ECO:0000255|HAMAP-Rule:MF_02002};
GN Name=ileS {ECO:0000255|HAMAP-Rule:MF_02002}; OrderedLocusNames=FN0067;
OS Fusobacterium nucleatum subsp. nucleatum (strain ATCC 25586 / DSM 15643 /
OS BCRC 10681 / CIP 101130 / JCM 8532 / KCTC 2640 / LMG 13131 / VPI 4355).
OC Bacteria; Fusobacteriota; Fusobacteriia; Fusobacteriales; Fusobacteriaceae;
OC Fusobacterium.
OX NCBI_TaxID=190304;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 25586 / DSM 15643 / BCRC 10681 / CIP 101130 / JCM 8532 / KCTC
RC 2640 / LMG 13131 / VPI 4355;
RX PubMed=11889109; DOI=10.1128/jb.184.7.2005-2018.2002;
RA Kapatral V., Anderson I., Ivanova N., Reznik G., Los T., Lykidis A.,
RA Bhattacharyya A., Bartman A., Gardner W., Grechkin G., Zhu L., Vasieva O.,
RA Chu L., Kogan Y., Chaga O., Goltsman E., Bernal A., Larsen N., D'Souza M.,
RA Walunas T., Pusch G., Haselkorn R., Fonstein M., Kyrpides N.C.,
RA Overbeek R.;
RT "Genome sequence and analysis of the oral bacterium Fusobacterium nucleatum
RT strain ATCC 25586.";
RL J. Bacteriol. 184:2005-2018(2002).
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:0000255|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; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_02002};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_02002};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_02002};
CC -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_02002}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|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:0000255|HAMAP-Rule:MF_02002}.
CC -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC IleS type 1 subfamily. {ECO:0000255|HAMAP-Rule:MF_02002}.
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DR EMBL; AE009951; AAL94280.1; -; Genomic_DNA.
DR RefSeq; NP_602981.1; NC_003454.1.
DR RefSeq; WP_005903528.1; NZ_CP028101.1.
DR AlphaFoldDB; Q8RH47; -.
DR SMR; Q8RH47; -.
DR STRING; 190304.FN0067; -.
DR PaxDb; 190304-FN0067; -.
DR EnsemblBacteria; AAL94280; AAL94280; FN0067.
DR GeneID; 79782803; -.
DR KEGG; fnu:FN0067; -.
DR PATRIC; fig|190304.8.peg.659; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_0_0; -.
DR InParanoid; Q8RH47; -.
DR BioCyc; FNUC190304:G1FZS-680-MONOMER; -.
DR Proteomes; UP000002521; Chromosome.
DR GO; GO:0005829; C:cytosol; IBA:GO_Central.
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; IBA:GO_Central.
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; IBA:GO_Central.
DR CDD; cd07960; Anticodon_Ia_Ile_BEm; 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 HAMAP; MF_02002; Ile_tRNA_synth_type1; 1.
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.
PE 3: Inferred from homology;
KW Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase; Metal-binding;
KW Nucleotide-binding; Protein biosynthesis; Reference proteome; Zinc.
FT CHAIN 1..933
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_0000098389"
FT MOTIF 60..70
FT /note="'HIGH' region"
FT MOTIF 606..610
FT /note="'KMSKS' region"
FT BINDING 565
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 609
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 906
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 909
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 925
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 928
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 933 AA; 107496 MW; 10058192B01AEECA CRC64;
MSDKEYTSTL HLPKTDFQMK ANLPNKEPKY IKKWTEEKIY EKGLEKNKNG ETFILHDGPP
YANGNTHIGH ALNKILKDII LKYKTFRGFR SPYVPGWDTH GLPIELQVVK EVGVGKAREM
SALEIRKLCE KYAKKWVGIQ KEQFIRLGVL GDWDNPYLTL DPRFEAKQLE LFGEIYVNGY
IFKGLKPVYW SPATETALAE AEIEYYDHVS PSIYVRMQAN KDLLDKIGFN EDVYVLIWTT
TPWTLPANVA ICLNENFDYG LYKTEKGNLI LAKDLAESAF KDIGIENFEL IKEFKGKDLE
YTTYKHPFLE RTGLIILGDH VTADAGTGAV HTAPGHGQDD YVVGLAYKLP VISPIDHRGC
LTEEAGDLFK GLVYSEANKA IIKHLTETGH ILKMQEISHS YPHDWRSKTP VIFRATEQWF
IRMEGGDLRE KTLKVIDKIN FIPSWGKNRI GSMMETRPDW CISRQRVWGV PIPIFYNDET
NEEIFHKEIL DRICDLVREH GSNIWVEKSP EELIGEELLV KYNLKGLKLR KETNIMDVWF
DSGSSHRGVL EVWEGLHRPC DLYLEGSDQH RGWFHTSLLT SVASTGDSPY KSVLTHGFVN
DGEGKKMSKS LGNTVSPEDV IKVYGADILR LWCGSVDYRD DVRISDNIVK QMSEAYRRIR
NTARYILGNS YDFNPKTDKV AYKDMLEIDK WALNKLEVLK RSVTESYDKY EFYNLFQGIH
YFAAIDMSAF YLDIIKDRLY TEKKDSVARR AAQTVMYEVL MTLTKMVAPI LSFTAEEIWE
SLPAETRESE SIFLADWYVN NDEYLKPELD EKWQQIIKLR KEVNKKLEKA RQGENKIIGN
SLDAKVSLYT EDNTLKEFIK ENLELLKIVF IVSDLEVVDS ADGNYTDAEE IEKLKIKIAH
ADGEKCERCW KYDELGTDSE HPTLCPRCAA VLK
//
