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SPEE_CLOPS
ID   SPEE_CLOPS              Reviewed;         283 AA.
AC   Q0SVK7;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-SEP-2006, sequence version 1.
DT   03-AUG-2022, entry version 89.
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=CPR_0515;
OS   Clostridium perfringens (strain SM101 / Type A).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC   Clostridium.
OX   NCBI_TaxID=289380;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SM101 / Type A;
RX   PubMed=16825665; DOI=10.1101/gr.5238106;
RA   Myers G.S.A., Rasko D.A., Cheung J.K., Ravel J., Seshadri R., DeBoy R.T.,
RA   Ren Q., Varga J., Awad M.M., Brinkac L.M., Daugherty S.C., Haft D.H.,
RA   Dodson R.J., Madupu R., Nelson W.C., Rosovitz M.J., Sullivan S.A.,
RA   Khouri H., Dimitrov G.I., Watkins K.L., Mulligan S., Benton J., Radune D.,
RA   Fisher D.J., Atkins H.S., Hiscox T., Jost B.H., Billington S.J.,
RA   Songer J.G., McClane B.A., Titball R.W., Rood J.I., Melville S.B.,
RA   Paulsen I.T.;
RT   "Skewed genomic variability in strains of the toxigenic bacterial pathogen,
RT   Clostridium perfringens.";
RL   Genome Res. 16:1031-1040(2006).
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; CP000312; ABG86992.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q0SVK7; -.
DR   SMR; Q0SVK7; -.
DR   EnsemblBacteria; ABG86992; ABG86992; CPR_0515.
DR   KEGG; cpr:CPR_0515; -.
DR   OMA; EYTIEAK; -.
DR   UniPathway; UPA00248; UER00314.
DR   Proteomes; UP000001824; 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; 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; PS51006; PABS_2; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Polyamine biosynthesis; Spermidine biosynthesis; Transferase.
FT   CHAIN           1..283
FT                   /note="Polyamine aminopropyltransferase"
FT                   /id="PRO_1000011996"
FT   DOMAIN          2..237
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         31
FT                   /ligand="S-methyl-5'-thioadenosine"
FT                   /ligand_id="ChEBI:CHEBI:17509"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         62
FT                   /ligand="spermidine"
FT                   /ligand_id="ChEBI:CHEBI:57834"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         86
FT                   /ligand="spermidine"
FT                   /ligand_id="ChEBI:CHEBI:57834"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00198"
FT   BINDING         106
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   283 AA;  32992 MW;  77C4286DA257E52C CRC64;
     MELWYTEEHT DKVRFSIKVD EQLYSGKSDF QRIDVFKSQE FGTFFTLDGL MMVTEKDEFI
     YHDMIVHVPM ATNPNIKNVL VIGAGDGGTV RELTRYETIE KIDMVEIDKL VVDVCREYLP
     QTANKLDDPR VSLFFEDGLK FVRSVENKYD LIIVDSTDPF GPGEGLFTRE FYGNCFKALK
     EDGILVNQHE SPYYEEYARG MKRAHKRIKE CFPVCRVYQA HIPTYPSGHW LFGFASKKYD
     PLNANIEKWN DLGLKTKYYN TDLHKGCFAL PNYVKEMLEN VDE
 
 
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