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SYS_SYNS3
ID   SYS_SYNS3               Reviewed;         425 AA.
AC   Q0I8C9;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   03-OCT-2006, sequence version 1.
DT   03-AUG-2022, entry version 98.
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=sync_2091;
OS   Synechococcus sp. (strain CC9311).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=64471;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CC9311;
RX   PubMed=16938853; DOI=10.1073/pnas.0602963103;
RA   Palenik B., Ren Q., Dupont C.L., Myers G.S., Heidelberg J.F., Badger J.H.,
RA   Madupu R., Nelson W.C., Brinkac L.M., Dodson R.J., Durkin A.S.,
RA   Daugherty S.C., Sullivan S.A., Khouri H., Mohamoud Y., Halpin R.,
RA   Paulsen I.T.;
RT   "Genome sequence of Synechococcus CC9311: insights into adaptation to a
RT   coastal environment.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:13555-13559(2006).
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; CP000435; ABI45435.1; -; Genomic_DNA.
DR   RefSeq; WP_011620005.1; NC_008319.1.
DR   AlphaFoldDB; Q0I8C9; -.
DR   SMR; Q0I8C9; -.
DR   STRING; 64471.sync_2091; -.
DR   EnsemblBacteria; ABI45435; ABI45435; sync_2091.
DR   KEGG; syg:sync_2091; -.
DR   eggNOG; COG0172; Bacteria.
DR   HOGENOM; CLU_023797_1_1_3; -.
DR   OMA; SPCFRRE; -.
DR   OrthoDB; 353391at2; -.
DR   UniPathway; UPA00906; UER00895.
DR   Proteomes; UP000001961; 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..425
FT                   /note="Serine--tRNA ligase"
FT                   /id="PRO_1000019851"
FT   REGION          108..134
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        117..134
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         233..235
FT                   /ligand="L-serine"
FT                   /ligand_id="ChEBI:CHEBI:33384"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT   BINDING         264..266
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT   BINDING         287
FT                   /ligand="L-serine"
FT                   /ligand_id="ChEBI:CHEBI:33384"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT   BINDING         351..354
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT   BINDING         385
FT                   /ligand="L-serine"
FT                   /ligand_id="ChEBI:CHEBI:33384"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
SQ   SEQUENCE   425 AA;  47669 MW;  6316FEB02306CF70 CRC64;
     MLDQRLLRDN PELISRELGR RGMDVDLTGL QLIAKLQRDL EERRSGLQAE GNRIGKEVGQ
     RIQAGADPKG AEVAELRLQG NQIKQKVAIL EDEEKQLTAQ LREELLSYPN LPSEACPDGR
     SEDDNKEVRR WGDPRVEDGL KEHWQIAEQL SLLDTERSVR IAQSRFVTLF GQGARLERAL
     INFMLDLHTG KGYREVLPPV LVNSASLTGS GQLPKFAEES FRCADDDLWL TPTAEVPLTS
     LHRDEIIPSD QLPLRYVAYS PCFRREAGSY GRDTRGLIRL HQFNKVELYW FVHPEHSEEA
     HELITADAEA VLQALELPYR VLELCTGDLG FSAARTYDLE VWLAGAGAYR EISSCSVCSD
     FQARRSSIRT KDGKTTRLVH TLNGSGLAIG RTMAALLENG QQPDGSVKLP QALVPYFGCD
     RLQPE
 
 
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