SYI_LACP3
ID SYI_LACP3 Reviewed; 928 AA.
AC Q039Q9;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 14-NOV-2006, sequence version 1.
DT 03-AUG-2022, entry version 106.
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=LSEI_1280;
OS Lacticaseibacillus paracasei (strain ATCC 334 / BCRC 17002 / CCUG 31169 /
OS CIP 107868 / KCTC 3260 / NRRL B-441) (Lactobacillus paracasei).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae;
OC Lacticaseibacillus.
OX NCBI_TaxID=321967;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 334 / BCRC 17002 / CCUG 31169 / CIP 107868 / KCTC 3260 / NRRL
RC B-441;
RX PubMed=17030793; DOI=10.1073/pnas.0607117103;
RA Makarova K.S., Slesarev A., Wolf Y.I., Sorokin A., Mirkin B., Koonin E.V.,
RA Pavlov A., Pavlova N., Karamychev V., Polouchine N., Shakhova V.,
RA Grigoriev I., Lou Y., Rohksar D., Lucas S., Huang K., Goodstein D.M.,
RA Hawkins T., Plengvidhya V., Welker D., Hughes J., Goh Y., Benson A.,
RA Baldwin K., Lee J.-H., Diaz-Muniz I., Dosti B., Smeianov V., Wechter W.,
RA Barabote R., Lorca G., Altermann E., Barrangou R., Ganesan B., Xie Y.,
RA Rawsthorne H., Tamir D., Parker C., Breidt F., Broadbent J.R., Hutkins R.,
RA O'Sullivan D., Steele J., Unlu G., Saier M.H. Jr., Klaenhammer T.,
RA Richardson P., Kozyavkin S., Weimer B.C., Mills D.A.;
RT "Comparative genomics of the lactic acid bacteria.";
RL Proc. Natl. Acad. Sci. U.S.A. 103:15611-15616(2006).
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; CP000423; ABJ70063.1; -; Genomic_DNA.
DR RefSeq; WP_011674453.1; NC_008526.1.
DR RefSeq; YP_806505.1; NC_008526.1.
DR AlphaFoldDB; Q039Q9; -.
DR SMR; Q039Q9; -.
DR STRING; 321967.LSEI_1280; -.
DR PRIDE; Q039Q9; -.
DR EnsemblBacteria; ABJ70063; ABJ70063; LSEI_1280.
DR KEGG; lca:LSEI_1280; -.
DR PATRIC; fig|321967.11.peg.1258; -.
DR HOGENOM; CLU_001493_7_1_9; -.
DR OMA; HLGTAWN; -.
DR Proteomes; UP000001651; 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 Gene3D; 3.40.50.620; -; 2.
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 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; SSF47323; 1.
DR SUPFAM; SSF50677; SSF50677; 1.
DR TIGRFAMs; TIGR00392; ileS; 1.
DR PROSITE; PS00178; AA_TRNA_LIGASE_I; 1.
PE 3: Inferred from homology;
KW Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase; Metal-binding;
KW Nucleotide-binding; Protein biosynthesis; Zinc.
FT CHAIN 1..928
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_1000022082"
FT MOTIF 57..67
FT /note="'HIGH' region"
FT MOTIF 593..597
FT /note="'KMSKS' region"
FT BINDING 552
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 596
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 887
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 890
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 907
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 910
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 928 AA; 105013 MW; D85AD91B2A0D64AA CRC64;
MKIKDTLNMG KTSFPMRAGL PKNESIWQKK WDEDHVYEQR QKLNEGKPTF MLHDGPPFAN
GNIHMGHALN KISKDIIVRY KSMNGFRAPY VPGWDTHGLP IEQQLAKQGV KRKEMSMTDY
RELCRQFAMQ EIDKQRTDFK RLGVMGDWEH PYITLQHHYE ASEIRVFGAM AKKGYIYHGL
KPVYWSWSSE STLAEAEIEY HDDKSPSIYV AFKVVDGKGL LDTDTYLVIW TTTPWTIPAN
YGITVNPRFD YVQVQVGDKK YVVAAELLDR VAEEIGWENP KILKTFKGTD MDKMTAQHPL
YDRTSLVMNA DHVTLDAGTG LVHTAPGHGE DDYKVGVKYG LPVVSVVDAK GYMNEYAPGF
EGVFYDDANK QITQALADKG ALLKLDFFTH SYPHDWRTKK PVIFRATTQW FASIDAFRDQ
ILKAIDTVDF KPSWGKTRLY NMIRDRGDWV ISRQRAWGVP LPIFYAEDGE PIIEEETINH
VADLFGKYGS NVWFEREAKD LLPEGYTNPH SPNGQFTKEK DIMDVWFDSG SSHQAVLAAR
PELSFPADLY LEGSDQYRGW FNSSLITSVA ATGVAPYRGI LSQGFTLDGK GRKMSKSLGN
TIVPATIEKQ FGAEIIRLWV ATVDSSSDVR VSVDNFAQTS EAYRKIRNTM RFMVANTGDF
DPEKDTVAYD ELGSVDRYMM VRLNQIIKQV KTAYDAYDFA TVEKTISSFL VNDLSAFYLD
VAKDVVYIEA KDDPKRRGMQ TVMFAALLAL TKLITPILPH TAEEVWPYLK QPEAYAALAD
MPEAEQFDDE SQLLDIWSGF MDFRSEVQKA LELARDNKVI GKSLEAAVTV YPSEPVRDML
DDVDANVMQL LITSHFEIAP ATTQAPANAE QFDDMAVVVK HADGEVCPRC RMVRTDIGTD
PKLPQLCSRC AAIVEANFPD AVTNGFDK
