ID W7DYC2_9PROT Unreviewed; 286 AA.
AC W7DYC2;
DT 16-APR-2014, integrated into UniProtKB/TrEMBL.
DT 16-APR-2014, sequence version 1.
DT 27-MAR-2024, entry version 47.
DE RecName: Full=Polyamine aminopropyltransferase {ECO:0000256|HAMAP-Rule:MF_00198};
DE AltName: Full=Putrescine aminopropyltransferase {ECO:0000256|HAMAP-Rule:MF_00198};
DE Short=PAPT {ECO:0000256|HAMAP-Rule:MF_00198};
DE AltName: Full=Spermidine synthase {ECO:0000256|HAMAP-Rule:MF_00198};
DE Short=SPDS {ECO:0000256|HAMAP-Rule:MF_00198};
DE Short=SPDSY {ECO:0000256|HAMAP-Rule:MF_00198};
DE EC=2.5.1.16 {ECO:0000256|HAMAP-Rule:MF_00198};
GN Name=speE {ECO:0000256|HAMAP-Rule:MF_00198};
GN ORFNames=COMX_09376 {ECO:0000313|EMBL:EUK17659.1};
OS Commensalibacter papalotli (ex Servin-Garciduenas et al. 2014).
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodospirillales;
OC Acetobacteraceae.
OX NCBI_TaxID=1208583 {ECO:0000313|EMBL:EUK17659.1, ECO:0000313|Proteomes:UP000019250};
RN [1] {ECO:0000313|EMBL:EUK17659.1, ECO:0000313|Proteomes:UP000019250}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MX-MONARCH01 {ECO:0000313|Proteomes:UP000019250};
RX PubMed=24604647;
RA Servin-Garciduenas L.E., Sanchez-Quinto A., Martinez-Romero E.;
RT "Draft Genome Sequence of Commensalibacter papalotli MX01, a Symbiont
RT Identified from the Guts of Overwintering Monarch Butterflies.";
RL Genome Announc. 2:e00128-14(2014).
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:0000256|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:0000256|HAMAP-Rule:MF_00198};
CC -!- PATHWAY: Amine and polyamine biosynthesis; spermidine biosynthesis;
CC spermidine from putrescine: step 1/1. {ECO:0000256|HAMAP-
CC Rule:MF_00198}.
CC -!- SUBUNIT: Homodimer or homotetramer. {ECO:0000256|HAMAP-Rule:MF_00198}.
CC -!- SIMILARITY: Belongs to the spermidine/spermine synthase family.
CC {ECO:0000256|ARBA:ARBA00007867, ECO:0000256|HAMAP-Rule:MF_00198}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00198}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EUK17659.1}.
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DR EMBL; ATSX01000003; EUK17659.1; -; Genomic_DNA.
DR RefSeq; WP_034340515.1; NZ_ATSX01000003.1.
DR AlphaFoldDB; W7DYC2; -.
DR STRING; 1208583.COMX_09376; -.
DR PATRIC; fig|1208583.4.peg.1892; -.
DR eggNOG; COG0421; Bacteria.
DR OrthoDB; 9793120at2; -.
DR UniPathway; UPA00248; UER00314.
DR Proteomes; UP000019250; Unassembled WGS sequence.
DR GO; GO:0004766; F:spermidine synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008295; P:spermidine biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd02440; AdoMet_MTases; 1.
DR Gene3D; 2.30.140.10; Spermidine synthase, tetramerisation domain; 1.
DR Gene3D; 3.40.50.150; Vaccinia Virus protein VP39; 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 NCBIfam; TIGR00417; speE; 1.
DR PANTHER; PTHR11558:SF11; SPERMIDINE SYNTHASE; 1.
DR PANTHER; PTHR11558; SPERMIDINE/SPERMINE SYNTHASE; 1.
DR Pfam; PF17284; Spermine_synt_N; 1.
DR Pfam; PF01564; Spermine_synth; 1.
DR SUPFAM; SSF53335; S-adenosyl-L-methionine-dependent methyltransferases; 1.
DR PROSITE; PS51006; PABS_2; 1.
PE 3: Inferred from homology;
KW Polyamine biosynthesis {ECO:0000256|ARBA:ARBA00023115, ECO:0000256|HAMAP-
KW Rule:MF_00198}; Reference proteome {ECO:0000313|Proteomes:UP000019250};
KW Spermidine biosynthesis {ECO:0000256|ARBA:ARBA00023066, ECO:0000256|HAMAP-
KW Rule:MF_00198};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00198}.
FT DOMAIN 3..238
FT /note="PABS"
FT /evidence="ECO:0000259|PROSITE:PS51006"
FT ACT_SITE 158
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198,
FT ECO:0000256|PROSITE-ProRule:PRU00354"
FT BINDING 32
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 87
FT /ligand="spermidine"
FT /ligand_id="ChEBI:CHEBI:57834"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 107
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 139..140
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 158..161
FT /ligand="spermidine"
FT /ligand_id="ChEBI:CHEBI:57834"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
SQ SEQUENCE 286 AA; 32173 MW; 36EBC28C30D90F21 CRC64;
MSEKWIDETL YDTWKQSFRV DKELARKKSE FQDIQIIENE FYGRVLLLDG ATQITEKDEF
VYQEMLAHVP LLTHGNAKNV LIIGAGDGGV LRRVLQHPEV EKATMVEIDG DVVALSKEFL
PKISAGCWDN HRAEVIIGDG IQYVADAKDE SFDVIIVDST DPIGVGEVLF TDAFYRDCAR
ILTPQGLIVN QCGVPFMQAD ELRETSLRRA QFFDYVSAYV VAVPTYIGGF MTLGIAGKGD
NHTKQRVSVI EERAQKANIL GHTRYWSPEV HTASFCLPPY IQEQLP
//