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SYS_TRIV2
ID   SYS_TRIV2               Reviewed;         426 AA.
AC   Q3MCE0;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   25-OCT-2005, sequence version 1.
DT   03-AUG-2022, entry version 105.
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=Ava_1724;
OS   Trichormus variabilis (strain ATCC 29413 / PCC 7937) (Anabaena variabilis).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Trichormus.
OX   NCBI_TaxID=240292;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29413 / PCC 7937;
RX   PubMed=25197444; DOI=10.4056/sigs.3899418;
RA   Thiel T., Pratte B.S., Zhong J., Goodwin L., Copeland A., Lucas S., Han C.,
RA   Pitluck S., Land M.L., Kyrpides N.C., Woyke T.;
RT   "Complete genome sequence of Anabaena variabilis ATCC 29413.";
RL   Stand. Genomic Sci. 9:562-573(2014).
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; CP000117; ABA21346.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q3MCE0; -.
DR   SMR; Q3MCE0; -.
DR   STRING; 240292.Ava_1724; -.
DR   EnsemblBacteria; ABA21346; ABA21346; Ava_1724.
DR   KEGG; ava:Ava_1724; -.
DR   eggNOG; COG0172; Bacteria.
DR   HOGENOM; CLU_023797_1_1_3; -.
DR   OMA; SPCFRRE; -.
DR   UniPathway; UPA00906; UER00895.
DR   Proteomes; UP000002533; 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.
FT   CHAIN           1..426
FT                   /note="Serine--tRNA ligase"
FT                   /id="PRO_1000019610"
FT   BINDING         235..237
FT                   /ligand="L-serine"
FT                   /ligand_id="ChEBI:CHEBI:33384"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT   BINDING         266..268
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT   BINDING         289
FT                   /ligand="L-serine"
FT                   /ligand_id="ChEBI:CHEBI:33384"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT   BINDING         353..356
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
FT   BINDING         389
FT                   /ligand="L-serine"
FT                   /ligand_id="ChEBI:CHEBI:33384"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00176"
SQ   SEQUENCE   426 AA;  47740 MW;  D9F2509398315C22 CRC64;
     MLDIKQIREN PQLIQERLNS RSGTYDIQPI LQLDKQQREL EATRSQIQAR SNEIGKIVGQ
     KIKSGINPQD PEIQALRDEG NSIKAQLSEL EPREKELKAE IEQLILALPN LPSDSTPIGK
     SEEENVEVRR WGDEYLPQNP NIIPHWEIGE KLGILNFERA VKVAQSRFVN LIGAGAALER
     ALINFMLKTQ TVAGYVEVSP PLLVNTDSLT GTGQLPKFAE ESFKCADDEL WLIPTAEVPV
     TNLYRGEILA AENLPIYHCA YTPCFRREAG SYGRDMRGLI RLHQFNKVEL VKVVHPSTSF
     DELEKLVGNA EAILQALKLP YRVINLCTGD LGFGATKTYD LEVWLPSSGK YREISSCSNC
     FDFQARRADI RFKEAGKKGT QFVHTLNGSG LAVGRTMAAI LENYQQPDGT ILIPEVLQVY
     LGREVL
 
 
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