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SPDE_COFAR
ID   SPDE_COFAR              Reviewed;         316 AA.
AC   O82147;
DT   15-JUL-1999, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1998, sequence version 1.
DT   03-AUG-2022, entry version 86.
DE   RecName: Full=Spermidine synthase;
DE            Short=SPDSY;
DE            EC=2.5.1.16;
DE   AltName: Full=Putrescine aminopropyltransferase;
OS   Coffea arabica (Arabian coffee).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Gentianales; Rubiaceae; Ixoroideae; Gardenieae complex;
OC   Bertiereae - Coffeeae clade; Coffeeae; Coffea.
OX   NCBI_TaxID=13443;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Callus;
RA   Hatanaka T., Sano H., Kusano T.;
RT   "Molecular cloning and characterization of coffee cDNA encoding spermidine
RT   synthase.";
RL   Plant Sci. 140:161-168(1999).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=putrescine + S-adenosyl 3-(methylsulfanyl)propylamine = H(+) +
CC         S-methyl-5'-thioadenosine + spermidine; Xref=Rhea:RHEA:12721,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:17509, ChEBI:CHEBI:57443,
CC         ChEBI:CHEBI:57834, ChEBI:CHEBI:326268; EC=2.5.1.16;
CC   -!- PATHWAY: Amine and polyamine biosynthesis; spermidine biosynthesis;
CC       spermidine from putrescine: step 1/1.
CC   -!- SIMILARITY: Belongs to the spermidine/spermine synthase family.
CC       {ECO:0000305}.
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DR   EMBL; AB015599; BAA29033.1; -; mRNA.
DR   AlphaFoldDB; O82147; -.
DR   SMR; O82147; -.
DR   UniPathway; UPA00248; UER00314.
DR   Proteomes; UP000515148; Genome assembly.
DR   GO; GO:0004766; F:spermidine synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0008295; P:spermidine biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 2.30.140.10; -; 1.
DR   Gene3D; 3.40.50.150; -; 1.
DR   HAMAP; MF_00198; Spermidine_synth; 1.
DR   InterPro; IPR030374; PABS.
DR   InterPro; IPR030373; PABS_CS.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   InterPro; IPR001045; Spermi_synthase.
DR   InterPro; IPR030668; Spermi_synthase_euk.
DR   InterPro; IPR035246; Spermidine_synt_N.
DR   InterPro; IPR037163; Spermidine_synt_N_sf.
DR   PANTHER; PTHR11558; PTHR11558; 1.
DR   Pfam; PF17284; Spermine_synt_N; 1.
DR   PIRSF; PIRSF000502; Spermidine_synth; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR00417; speE; 1.
DR   PROSITE; PS01330; PABS_1; 1.
DR   PROSITE; PS51006; PABS_2; 1.
PE   2: Evidence at transcript level;
KW   Polyamine biosynthesis; Reference proteome; Spermidine biosynthesis;
KW   Transferase.
FT   CHAIN           1..316
FT                   /note="Spermidine synthase"
FT                   /id="PRO_0000156450"
FT   DOMAIN          25..262
FT                   /note="PABS"
FT   ACT_SITE        181
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
FT   BINDING         56
FT                   /ligand="S-adenosyl 3-(methylsulfanyl)propylamine"
FT                   /ligand_id="ChEBI:CHEBI:57443"
FT                   /evidence="ECO:0000250"
FT   BINDING         86
FT                   /ligand="putrescine"
FT                   /ligand_id="ChEBI:CHEBI:326268"
FT                   /evidence="ECO:0000250"
FT   BINDING         87
FT                   /ligand="S-adenosyl 3-(methylsulfanyl)propylamine"
FT                   /ligand_id="ChEBI:CHEBI:57443"
FT                   /evidence="ECO:0000250"
FT   BINDING         111
FT                   /ligand="S-adenosyl 3-(methylsulfanyl)propylamine"
FT                   /ligand_id="ChEBI:CHEBI:57443"
FT                   /evidence="ECO:0000250"
FT   BINDING         131
FT                   /ligand="S-adenosyl 3-(methylsulfanyl)propylamine"
FT                   /ligand_id="ChEBI:CHEBI:57443"
FT                   /evidence="ECO:0000250"
FT   BINDING         162..163
FT                   /ligand="S-adenosyl 3-(methylsulfanyl)propylamine"
FT                   /ligand_id="ChEBI:CHEBI:57443"
FT                   /evidence="ECO:0000250"
FT   BINDING         181..184
FT                   /ligand="putrescine"
FT                   /ligand_id="ChEBI:CHEBI:326268"
FT                   /evidence="ECO:0000250"
FT   BINDING         181
FT                   /ligand="S-adenosyl 3-(methylsulfanyl)propylamine"
FT                   /ligand_id="ChEBI:CHEBI:57443"
FT                   /evidence="ECO:0000250"
FT   BINDING         250
FT                   /ligand="putrescine"
FT                   /ligand_id="ChEBI:CHEBI:326268"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   316 AA;  34501 MW;  E2718735F284988B CRC64;
     MADAVNSNSK EEAAQLPDGV SSVIPGWFSE ISPMWPGEAH SLKVEKILFQ GKSDYQNVMV
     FQSSTYGKVL VLDGVIQLTE RDECAYQEMI AHLPLCSIPS PKKVLVIGGG DGGVLREVAR
     HLSVEQIDIC EIDKMVVDVS KQFFPDVAVG FEDPRVVLHI GDGVAFLKAV PEGTYDAIIV
     DSSDPIGPAQ ELFEKPFFES VAKALRPGGV VCTQAESIWL HMHIIEDIVA NCRQIFKGSV
     NYAWTTVPTY PSGVIGFMLC STEGPPVDFK HPINPIDAND GRSKTMKPLK FYNSEIHSAA
     FCLPSFAKKV IDSKAN
 
 
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