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SPEE_SALNS
ID   SPEE_SALNS              Reviewed;         286 AA.
AC   B4SU91;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   23-SEP-2008, sequence version 1.
DT   03-AUG-2022, entry version 76.
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};
GN   OrderedLocusNames=SNSL254_A0182;
OS   Salmonella newport (strain SL254).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=423368;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SL254;
RX   PubMed=21602358; DOI=10.1128/jb.00297-11;
RA   Fricke W.F., Mammel M.K., McDermott P.F., Tartera C., White D.G.,
RA   Leclerc J.E., Ravel J., Cebula T.A.;
RT   "Comparative genomics of 28 Salmonella enterica isolates: evidence for
RT   CRISPR-mediated adaptive sublineage evolution.";
RL   J. Bacteriol. 193:3556-3568(2011).
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; CP001113; ACF64951.1; -; Genomic_DNA.
DR   RefSeq; WP_000829973.1; NZ_CCMR01000003.1.
DR   AlphaFoldDB; B4SU91; -.
DR   SMR; B4SU91; -.
DR   EnsemblBacteria; ACF64951; ACF64951; SNSL254_A0182.
DR   KEGG; see:SNSL254_A0182; -.
DR   HOGENOM; CLU_048199_0_0_6; -.
DR   OMA; LWPGQSF; -.
DR   UniPathway; UPA00248; UER00314.
DR   Proteomes; UP000008824; 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; Spermidine biosynthesis; Transferase.
FT   CHAIN           1..286
FT                   /note="Polyamine aminopropyltransferase"
FT                   /id="PRO_1000099298"
FT   DOMAIN          5..238
FT                   /note="PABS"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   ACT_SITE        158
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         33
FT                   /ligand="S-methyl-5'-thioadenosine"
FT                   /ligand_id="ChEBI:CHEBI:17509"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         64
FT                   /ligand="spermidine"
FT                   /ligand_id="ChEBI:CHEBI:57834"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         88
FT                   /ligand="spermidine"
FT                   /ligand_id="ChEBI:CHEBI:57834"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         108
FT                   /ligand="S-methyl-5'-thioadenosine"
FT                   /ligand_id="ChEBI:CHEBI:17509"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         140..141
FT                   /ligand="S-methyl-5'-thioadenosine"
FT                   /ligand_id="ChEBI:CHEBI:17509"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         158..161
FT                   /ligand="spermidine"
FT                   /ligand_id="ChEBI:CHEBI:57834"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         165
FT                   /ligand="S-methyl-5'-thioadenosine"
FT                   /ligand_id="ChEBI:CHEBI:17509"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
SQ   SEQUENCE   286 AA;  32037 MW;  20CFBE2A045C8174 CRC64;
     MAENTMWHET LHDQFGQYFA VDNVLYHEKT DHQDLIIFEN AAFGRVMALD GVVQTTERDE
     FIYHEMMTHV PLLAHGHAKH VLIIGGGDGA MLREVTRHKN VETITMVEID AGVVSFCRQY
     LPNHNAGSYD DPRFTLVIDD GVNFVNQTHQ TFDVIISDCT DPIGPGESLF TSAFYEGCKR
     CLNPGGIFVA QNGVCFLQQD EALDSHRKLS HYFSDVGFYQ AAIPTYYGGI MTFAWATDNG
     ALRHLSSEII QARFHAAGLK CRYYNPAIHA AAFALPQYLH DALSAQ
 
 
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