STPS2_SALMI
ID STPS2_SALMI Reviewed; 546 AA.
AC A0A1W6GW06;
DT 18-SEP-2019, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2017, sequence version 1.
DT 03-AUG-2022, entry version 22.
DE RecName: Full=(-)-5-epieremophilene synthase STPS2;
DE EC=4.2.3.199 {ECO:0000269|PubMed:28487717};
DE AltName: Full=Sesquiterpene synthase 2 {ECO:0000303|PubMed:28487717};
DE Short=SmSTPS2 {ECO:0000303|PubMed:28487717};
GN Name=STPS2 {ECO:0000303|PubMed:28487717};
OS Salvia miltiorrhiza (Chinese sage).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC asterids; lamiids; Lamiales; Lamiaceae; Nepetoideae; Mentheae; Salviinae;
OC Salvia; Salvia incertae sedis.
OX NCBI_TaxID=226208;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA], FUNCTION, CATALYTIC ACTIVITY,
RP BIOPHYSICOCHEMICAL PROPERTIES, TISSUE SPECIFICITY, AND INDUCTION.
RX PubMed=28487717; DOI=10.3389/fpls.2017.00627;
RA Fang X., Li C.Y., Yang Y., Cui M.Y., Chen X.Y., Yang L.;
RT "Identification of a novel (-)-5-epieremophilene synthase from Salvia
RT miltiorrhiza via transcriptome mining.";
RL Front. Plant Sci. 8:627-627(2017).
CC -!- FUNCTION: Sesquiterpene synthase that catalyzes the conversion of
CC farnesyl diphosphate to (-)-5-epi-eremophilene.
CC {ECO:0000269|PubMed:28487717}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(2E,6E)-farnesyl diphosphate = (-)-5-epi-eremophilene +
CC diphosphate; Xref=Rhea:RHEA:58168, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:142537, ChEBI:CHEBI:175763; EC=4.2.3.199;
CC Evidence={ECO:0000269|PubMed:28487717};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:58169;
CC Evidence={ECO:0000269|PubMed:28487717};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000250|UniProtKB:Q40577};
CC Note=Binds 3 Mg(2+) ions per subunit. {ECO:0000250|UniProtKB:Q40577};
CC -!- BIOPHYSICOCHEMICAL PROPERTIES:
CC Kinetic parameters:
CC KM=24.2 uM for farnesyl diphosphate {ECO:0000269|PubMed:28487717};
CC Note=kcat is 2.07 sec(-1) with farnesyl diphosphate as substrate.
CC {ECO:0000269|PubMed:28487717};
CC -!- PATHWAY: Secondary metabolite biosynthesis; terpenoid biosynthesis.
CC {ECO:0000305}.
CC -!- SUBUNIT: Monomer. {ECO:0000250|UniProtKB:Q40577}.
CC -!- TISSUE SPECIFICITY: Highly expressed in leaves (PubMed:28487717).
CC Expressed at levels in flowers (PubMed:28487717).
CC {ECO:0000269|PubMed:28487717}.
CC -!- INDUCTION: Induced by ethylene and abscisic acid (ABA).
CC {ECO:0000269|PubMed:28487717}.
CC -!- DOMAIN: The Asp-Asp-Xaa-Xaa-Asp/Glu (DDXXD/E) motif is important for
CC the catalytic activity, presumably through binding to Mg(2+).
CC {ECO:0000305}.
CC -!- SIMILARITY: Belongs to the terpene synthase family. Tpsa subfamily.
CC {ECO:0000305}.
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DR EMBL; KY432513; ARM19968.1; -; mRNA.
DR AlphaFoldDB; A0A1W6GW06; -.
DR SMR; A0A1W6GW06; -.
DR KEGG; ag:ARM19968; -.
DR BRENDA; 4.2.3.199; 9850.
DR UniPathway; UPA00213; -.
DR GO; GO:0000287; F:magnesium ion binding; IEA:InterPro.
DR GO; GO:0010333; F:terpene synthase activity; IDA:UniProtKB.
DR GO; GO:0016102; P:diterpenoid biosynthetic process; IEA:InterPro.
DR GO; GO:0016106; P:sesquiterpenoid biosynthetic process; IDA:UniProtKB.
DR CDD; cd00684; Terpene_cyclase_plant_C1; 1.
DR Gene3D; 1.10.600.10; -; 1.
DR Gene3D; 1.50.10.130; -; 1.
DR InterPro; IPR008949; Isoprenoid_synthase_dom_sf.
DR InterPro; IPR034741; Terpene_cyclase-like_1_C.
DR InterPro; IPR044814; Terpene_cyclase_plant_C1.
DR InterPro; IPR001906; Terpene_synth_N.
DR InterPro; IPR036965; Terpene_synth_N_sf.
DR InterPro; IPR005630; Terpene_synthase_metal-bd.
DR InterPro; IPR008930; Terpenoid_cyclase/PrenylTrfase.
DR Pfam; PF01397; Terpene_synth; 1.
DR Pfam; PF03936; Terpene_synth_C; 1.
DR SFLD; SFLDG01019; Terpene_Cyclase_Like_1_C_Termi; 1.
DR SUPFAM; SSF48239; SSF48239; 1.
DR SUPFAM; SSF48576; SSF48576; 1.
PE 1: Evidence at protein level;
KW Lyase; Magnesium; Metal-binding.
FT CHAIN 1..546
FT /note="(-)-5-epieremophilene synthase STPS2"
FT /id="PRO_0000447713"
FT MOTIF 299..303
FT /note="DDXXD motif"
FT /evidence="ECO:0000305"
FT BINDING 299
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000250|UniProtKB:Q40577"
FT BINDING 299
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000250|UniProtKB:Q40577"
FT BINDING 303
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000250|UniProtKB:Q40577"
FT BINDING 303
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000250|UniProtKB:Q40577"
FT BINDING 442
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="3"
FT /evidence="ECO:0000250|UniProtKB:Q40577"
FT BINDING 446
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="3"
FT /evidence="ECO:0000250|UniProtKB:Q40577"
FT BINDING 450
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="3"
FT /evidence="ECO:0000250|UniProtKB:Q40577"
SQ SEQUENCE 546 AA; 63502 MW; B59C0412D197232F CRC64;
MATTQVEIQR PIANFSPSLW GDQFIKNDSG AKAAEKHCKA VEELKKEVMN MITAGGSNLV
EAMNLIDTLE RLGISYHFEK EIDQKLNHFF NLNTDYSDEF YDLYTVSLHF RLFRQHGHRI
SSDIFGRWID ESGKFKEGLK TDGKGLLSLY EASYLRTRGE TILDDALEFA TATLNSIAPH
LESPLSKQVV HALIQPLHYG NPRIEAHNFI SIYEENQDKN EFLLKFAKLD YNLLQMLHKE
ELHEVSRWWK ELDLVSKLPY ARDRVVECFF WAMGVYHEPQ YSRARIMLTK TITMTSIIDD
TYDAYGVIEE LDIFTEAIER WNIEEMDRLP EYVKPFYKAL LELYEQFEEE LAEEGRSYAA
HYAIESLKEL VRSYHVEAKW FIQGYLPPFE EYLKNALITC TYCYHTTTSL LGVESAVEED
FQWLAKKPKM LVAGLLICRV IDDIATYEVE KERGQSATGI ESYMRDNNAT IEEAVAKFFE
IATDAWKDIN EECLMPSPYS RDVLMRILNL ERIIDVTYKG NEDGYTQPEK VLKPHIIALF
VDPIKM
