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SPEE_PSESM
ID   SPEE_PSESM              Reviewed;         286 AA.
AC   Q884N3;
DT   14-NOV-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 113.
DE   RecName: Full=Polyamine aminopropyltransferase {ECO:0000255|HAMAP-Rule:MF_00198};
DE   AltName: Full=Putrescine aminopropyltransferase {ECO:0000255|HAMAP-Rule:MF_00198};
DE            Short=PAPT {ECO:0000255|HAMAP-Rule:MF_00198};
DE   AltName: Full=Spermidine synthase {ECO:0000255|HAMAP-Rule:MF_00198};
DE            Short=SPDS {ECO:0000255|HAMAP-Rule:MF_00198};
DE            Short=SPDSY {ECO:0000255|HAMAP-Rule:MF_00198};
DE            EC=2.5.1.16 {ECO:0000255|HAMAP-Rule:MF_00198};
GN   Name=speE {ECO:0000255|HAMAP-Rule:MF_00198}; OrderedLocusNames=PSPTO_2055;
OS   Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=223283;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-871 / DC3000;
RX   PubMed=12928499; DOI=10.1073/pnas.1731982100;
RA   Buell C.R., Joardar V., Lindeberg M., Selengut J., Paulsen I.T.,
RA   Gwinn M.L., Dodson R.J., DeBoy R.T., Durkin A.S., Kolonay J.F., Madupu R.,
RA   Daugherty S.C., Brinkac L.M., Beanan M.J., Haft D.H., Nelson W.C.,
RA   Davidsen T.M., Zafar N., Zhou L., Liu J., Yuan Q., Khouri H.M.,
RA   Fedorova N.B., Tran B., Russell D., Berry K.J., Utterback T.R.,
RA   Van Aken S.E., Feldblyum T.V., D'Ascenzo M., Deng W.-L., Ramos A.R.,
RA   Alfano J.R., Cartinhour S., Chatterjee A.K., Delaney T.P., Lazarowitz S.G.,
RA   Martin G.B., Schneider D.J., Tang X., Bender C.L., White O., Fraser C.M.,
RA   Collmer A.;
RT   "The complete genome sequence of the Arabidopsis and tomato pathogen
RT   Pseudomonas syringae pv. tomato DC3000.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:10181-10186(2003).
CC   -!- FUNCTION: Catalyzes the irreversible transfer of a propylamine group
CC       from the amino donor S-adenosylmethioninamine (decarboxy-AdoMet) to
CC       putrescine (1,4-diaminobutane) to yield spermidine. {ECO:0000255|HAMAP-
CC       Rule:MF_00198}.
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         Evidence={ECO:0000255|HAMAP-Rule:MF_00198};
CC   -!- PATHWAY: Amine and polyamine biosynthesis; spermidine biosynthesis;
CC       spermidine from putrescine: step 1/1. {ECO:0000255|HAMAP-
CC       Rule:MF_00198}.
CC   -!- SUBUNIT: Homodimer or homotetramer. {ECO:0000255|HAMAP-Rule:MF_00198}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00198}.
CC   -!- SIMILARITY: Belongs to the spermidine/spermine synthase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00198}.
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DR   EMBL; AE016853; AAO55573.1; -; Genomic_DNA.
DR   RefSeq; NP_791878.1; NC_004578.1.
DR   RefSeq; WP_005766858.1; NC_004578.1.
DR   AlphaFoldDB; Q884N3; -.
DR   SMR; Q884N3; -.
DR   STRING; 223283.PSPTO_2055; -.
DR   PRIDE; Q884N3; -.
DR   EnsemblBacteria; AAO55573; AAO55573; PSPTO_2055.
DR   GeneID; 1183700; -.
DR   KEGG; pst:PSPTO_2055; -.
DR   PATRIC; fig|223283.9.peg.2086; -.
DR   eggNOG; COG0421; Bacteria.
DR   HOGENOM; CLU_048199_0_0_6; -.
DR   OMA; LWPGQSF; -.
DR   OrthoDB; 1613081at2; -.
DR   PhylomeDB; Q884N3; -.
DR   UniPathway; UPA00248; UER00314.
DR   Proteomes; UP000002515; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004766; F:spermidine synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008295; P:spermidine biosynthetic process; IEA:UniProtKB-UniRule.
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; IPR035246; Spermidine_synt_N.
DR   InterPro; IPR037163; Spermidine_synt_N_sf.
DR   PANTHER; PTHR11558; PTHR11558; 1.
DR   Pfam; PF17284; Spermine_synt_N; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR00417; speE; 1.
DR   PROSITE; PS01330; PABS_1; 1.
DR   PROSITE; PS51006; PABS_2; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Polyamine biosynthesis; Reference proteome;
KW   Spermidine biosynthesis; Transferase.
FT   CHAIN           1..286
FT                   /note="Polyamine aminopropyltransferase"
FT                   /id="PRO_0000156499"
FT   DOMAIN          1..235
FT                   /note="PABS"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   ACT_SITE        155
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         30
FT                   /ligand="S-methyl-5'-thioadenosine"
FT                   /ligand_id="ChEBI:CHEBI:17509"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         61
FT                   /ligand="spermidine"
FT                   /ligand_id="ChEBI:CHEBI:57834"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         85
FT                   /ligand="spermidine"
FT                   /ligand_id="ChEBI:CHEBI:57834"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         105
FT                   /ligand="S-methyl-5'-thioadenosine"
FT                   /ligand_id="ChEBI:CHEBI:17509"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         137..138
FT                   /ligand="S-methyl-5'-thioadenosine"
FT                   /ligand_id="ChEBI:CHEBI:17509"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         155..158
FT                   /ligand="spermidine"
FT                   /ligand_id="ChEBI:CHEBI:57834"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         162
FT                   /ligand="S-methyl-5'-thioadenosine"
FT                   /ligand_id="ChEBI:CHEBI:17509"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
SQ   SEQUENCE   286 AA;  32055 MW;  9BAC23E01BFFFE55 CRC64;
     MSDYQETLYE GYGQRFRMEK MLHEVRTEHQ HLVIFQNPRM GRVMALDGVI QTTEADEFIY
     HEMLTHVPIL AHGAAKRVLI IGGGDGGMLR EVAKHLTVEH ITMVEIDATV VEMCKEFLPN
     HSSGAFDDSR LNLVIDDGMR FVATTEEKFD VIISDSTDPI GPGEVLFSEN FYQACHRCLN
     EGGILVTQNG TPFMQLSGVQ TTAGRMNGLF ADWHFYQAAI PTYIGGAMTF AWGATDKSYR
     KLPLETLRQR FSGSGIVTRY YNPEVHIGAF ALPQYVLHAV NKASND
 
 
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