SYS_LACAC
ID SYS_LACAC Reviewed; 435 AA.
AC Q5FIN5;
DT 07-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2005, sequence version 1.
DT 03-AUG-2022, entry version 93.
DE RecName: Full=Serine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_00176};
DE EC=6.1.1.11 {ECO:0000255|HAMAP-Rule:MF_00176};
DE AltName: Full=Seryl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_00176};
DE Short=SerRS {ECO:0000255|HAMAP-Rule:MF_00176};
DE AltName: Full=Seryl-tRNA(Ser/Sec) synthetase {ECO:0000255|HAMAP-Rule:MF_00176};
GN Name=serS {ECO:0000255|HAMAP-Rule:MF_00176}; OrderedLocusNames=LBA1626;
OS Lactobacillus acidophilus (strain ATCC 700396 / NCK56 / N2 / NCFM).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae;
OC Lactobacillus.
OX NCBI_TaxID=272621;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700396 / NCK56 / N2 / NCFM;
RX PubMed=15671160; DOI=10.1073/pnas.0409188102;
RA Altermann E., Russell W.M., Azcarate-Peril M.A., Barrangou R., Buck B.L.,
RA McAuliffe O., Souther N., Dobson A., Duong T., Callanan M., Lick S.,
RA Hamrick A., Cano R., Klaenhammer T.R.;
RT "Complete genome sequence of the probiotic lactic acid bacterium
RT Lactobacillus acidophilus NCFM.";
RL Proc. Natl. Acad. Sci. U.S.A. 102:3906-3912(2005).
CC -!- FUNCTION: Catalyzes the attachment of serine to tRNA(Ser). Is also able
CC to aminoacylate tRNA(Sec) with serine, to form the misacylated tRNA L-
CC seryl-tRNA(Sec), which will be further converted into selenocysteinyl-
CC tRNA(Sec). {ECO:0000255|HAMAP-Rule:MF_00176}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-serine + tRNA(Ser) = AMP + diphosphate + H(+) + L-
CC seryl-tRNA(Ser); Xref=Rhea:RHEA:12292, Rhea:RHEA-COMP:9669,
CC Rhea:RHEA-COMP:9703, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:33019, ChEBI:CHEBI:33384, ChEBI:CHEBI:78442,
CC ChEBI:CHEBI:78533, ChEBI:CHEBI:456215; EC=6.1.1.11;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00176};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-serine + tRNA(Sec) = AMP + diphosphate + H(+) + L-
CC seryl-tRNA(Sec); Xref=Rhea:RHEA:42580, Rhea:RHEA-COMP:9742,
CC Rhea:RHEA-COMP:10128, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:33019, ChEBI:CHEBI:33384, ChEBI:CHEBI:78442,
CC ChEBI:CHEBI:78533, ChEBI:CHEBI:456215; EC=6.1.1.11;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00176};
CC -!- PATHWAY: Aminoacyl-tRNA biosynthesis; selenocysteinyl-tRNA(Sec)
CC biosynthesis; L-seryl-tRNA(Sec) from L-serine and tRNA(Sec): step 1/1.
CC {ECO:0000255|HAMAP-Rule:MF_00176}.
CC -!- SUBUNIT: Homodimer. The tRNA molecule binds across the dimer.
CC {ECO:0000255|HAMAP-Rule:MF_00176}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00176}.
CC -!- DOMAIN: Consists of two distinct domains, a catalytic core and a N-
CC terminal extension that is involved in tRNA binding.
CC {ECO:0000255|HAMAP-Rule:MF_00176}.
CC -!- SIMILARITY: Belongs to the class-II aminoacyl-tRNA synthetase family.
CC Type-1 seryl-tRNA synthetase subfamily. {ECO:0000255|HAMAP-
CC Rule:MF_00176}.
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DR EMBL; CP000033; AAV43439.1; -; Genomic_DNA.
DR RefSeq; WP_011254519.1; NC_006814.3.
DR RefSeq; YP_194470.1; NC_006814.3.
DR AlphaFoldDB; Q5FIN5; -.
DR SMR; Q5FIN5; -.
DR STRING; 272621.LBA1626; -.
DR PRIDE; Q5FIN5; -.
DR EnsemblBacteria; AAV43439; AAV43439; LBA1626.
DR GeneID; 56943193; -.
DR KEGG; lac:LBA1626; -.
DR PATRIC; fig|272621.13.peg.1546; -.
DR eggNOG; COG0172; Bacteria.
DR HOGENOM; CLU_023797_0_1_9; -.
DR OMA; SGWGWYF; -.
DR BioCyc; LACI272621:G1G49-1595-MON; -.
DR UniPathway; UPA00906; UER00895.
DR Proteomes; UP000006381; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004828; F:serine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0016260; P:selenocysteine biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0097056; P:selenocysteinyl-tRNA(Sec) biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0006434; P:seryl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR CDD; cd00770; SerRS_core; 1.
DR Gene3D; 1.10.287.40; -; 1.
DR Gene3D; 3.30.930.10; -; 1.
DR HAMAP; MF_00176; Ser_tRNA_synth_type1; 1.
DR InterPro; IPR002314; aa-tRNA-synt_IIb.
DR InterPro; IPR006195; aa-tRNA-synth_II.
DR InterPro; IPR045864; aa-tRNA-synth_II/BPL/LPL.
DR InterPro; IPR002317; Ser-tRNA-ligase_type_1.
DR InterPro; IPR015866; Ser-tRNA-synth_1_N.
DR InterPro; IPR042103; SerRS_1_N_sf.
DR InterPro; IPR033729; SerRS_core.
DR InterPro; IPR010978; tRNA-bd_arm.
DR PANTHER; PTHR43697; PTHR43697; 1.
DR Pfam; PF02403; Seryl_tRNA_N; 1.
DR Pfam; PF00587; tRNA-synt_2b; 1.
DR PIRSF; PIRSF001529; Ser-tRNA-synth_IIa; 1.
DR PRINTS; PR00981; TRNASYNTHSER.
DR SUPFAM; SSF46589; SSF46589; 1.
DR SUPFAM; SSF55681; SSF55681; 1.
DR TIGRFAMs; TIGR00414; serS; 1.
DR PROSITE; PS50862; AA_TRNA_LIGASE_II; 1.
PE 3: Inferred from homology;
KW Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase;
KW Nucleotide-binding; Protein biosynthesis; Reference proteome.
FT CHAIN 1..435
FT /note="Serine--tRNA ligase"
FT /id="PRO_0000122062"
FT BINDING 237..239
FT /ligand="L-serine"
FT /ligand_id="ChEBI:CHEBI:33384"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT BINDING 268..270
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT BINDING 291
FT /ligand="L-serine"
FT /ligand_id="ChEBI:CHEBI:33384"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT BINDING 355..358
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT BINDING 390
FT /ligand="L-serine"
FT /ligand_id="ChEBI:CHEBI:33384"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
SQ SEQUENCE 435 AA; 49616 MW; 1ACE34ACF656BFDF CRC64;
MLDIKVIREN LDWSKKKLAT RGIKPEELDE LVEIDTKRRK DLTMSEQLKA KRNDVSKQIA
EKKRNKEDAS DAIAEMREVG KEIKKLDKEV DELTEKQNYI LLRLPNFPAD SDPIGPDDSY
NEEVRKWEEP TKFDFKPKAH WDLGTDLGIL DWDRASKVSG ARFVYYIGAG ALLERAVFNF
FLDENTKDGY TEIIPPYLVN DASMQGTGQF PKFHEDVYTI VDNDDPDKPR DLTLIPTAEV
PLVNYFRNEI IHENKLPINV TAMSPAFRSE AGSAGRDTRG LIRMHEFRKV EMVKICKPDE
SWDELEKLTH NAEHLLQKLG LPYHVVALST GDASFTSAKT YDLEVWMPAQ DKYREISSCS
NCTDFQARRA QIRYRDEDGK LHLAHTLNGS GLAVGRCVAA ILENYQNEDG SVTVPDVLVP
YMNGMKKITK ESGLI
