ID SYS_BIFLO Reviewed; 428 AA.
AC Q8G3W7;
DT 23-APR-2003, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2003, sequence version 1.
DT 27-MAR-2024, entry version 103.
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=BL1635;
OS Bifidobacterium longum (strain NCC 2705).
OC Bacteria; Actinomycetota; Actinomycetes; Bifidobacteriales;
OC Bifidobacteriaceae; Bifidobacterium.
OX NCBI_TaxID=206672;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NCC 2705;
RX PubMed=12381787; DOI=10.1073/pnas.212527599;
RA Schell M.A., Karmirantzou M., Snel B., Vilanova D., Berger B., Pessi G.,
RA Zwahlen M.-C., Desiere F., Bork P., Delley M., Pridmore R.D., Arigoni F.;
RT "The genome sequence of Bifidobacterium longum reflects its adaptation to
RT the human gastrointestinal tract.";
RL Proc. Natl. Acad. Sci. U.S.A. 99:14422-14427(2002).
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; AE014295; AAN25423.1; -; Genomic_DNA.
DR RefSeq; NP_696787.1; NC_004307.2.
DR RefSeq; WP_007052327.1; NC_004307.2.
DR AlphaFoldDB; Q8G3W7; -.
DR SMR; Q8G3W7; -.
DR STRING; 206672.BL1635; -.
DR EnsemblBacteria; AAN25423; AAN25423; BL1635.
DR GeneID; 69578844; -.
DR KEGG; blo:BL1635; -.
DR PATRIC; fig|206672.9.peg.1690; -.
DR HOGENOM; CLU_023797_0_1_11; -.
DR OrthoDB; 9804647at2; -.
DR PhylomeDB; Q8G3W7; -.
DR UniPathway; UPA00906; UER00895.
DR Proteomes; UP000000439; 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:0006434; P:seryl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR Gene3D; 1.10.287.40; Serine-tRNA synthetase, tRNA binding domain; 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; IPR010978; tRNA-bd_arm.
DR NCBIfam; TIGR00414; serS; 1.
DR PANTHER; PTHR11778:SF7; SERINE--TRNA LIGASE, CYTOPLASMIC-RELATED; 1.
DR PANTHER; PTHR11778; SERYL-TRNA SYNTHETASE; 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; SSF55681; Class II aaRS and biotin synthetases; 1.
DR SUPFAM; SSF46589; tRNA-binding arm; 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..428
FT /note="Serine--tRNA ligase"
FT /id="PRO_0000122009"
FT BINDING 231..233
FT /ligand="L-serine"
FT /ligand_id="ChEBI:CHEBI:33384"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT BINDING 262..264
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT BINDING 278
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT BINDING 285
FT /ligand="L-serine"
FT /ligand_id="ChEBI:CHEBI:33384"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT BINDING 349..352
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT BINDING 384
FT /ligand="L-serine"
FT /ligand_id="ChEBI:CHEBI:33384"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
SQ SEQUENCE 428 AA; 47956 MW; 7A8454310D779619 CRC64;
MLDIQFIREH TDIVKESQRK RGESVELVDE VLSSDTARRE ALKAFEEARA QQKEIGKKVA
SAPADEKAKL IAETKELSQK VSEYKSKADS AAEEYTTAMW KLSNIVEPEA PEGGEDDYVV
VKKVGQIRDF AAEGFEPKDH LTLGTGVAGI DMRRGVKVGG SRFYFLRGQV ARMQIAMLTM
AVDQAEEHGF TLAITPTLVR PEVMRGTGFL NSHADEIYRL REPDDQYLVG TSEVALAGMH
ENEILDLGNG PLRYCGWSSC YRREAGAAGK DTSGIIRVHQ FDKVEMFVYA KQEDSYKEHE
HLLAMEQEML AKVEVPYRII DTAAGDLGSS AARKFDCEAW VPTQGRYREL TSTSNCTEYQ
ARRLNIRERM EDGGTRPVST LNGTLATTRW LVAIMENHQQ KDGSIEIPKA MRAYMGGKEV
IEPTKWEA
//
