ID W7Y0F0_9BACT Unreviewed; 517 AA.
AC W7Y0F0;
DT 16-APR-2014, integrated into UniProtKB/TrEMBL.
DT 16-APR-2014, sequence version 1.
DT 27-MAR-2024, entry version 43.
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=JCM21142_34 {ECO:0000313|EMBL:GAF01427.1};
OS Saccharicrinis fermentans DSM 9555 = JCM 21142.
OC Bacteria; Bacteroidota; Bacteroidia; Marinilabiliales; Marinilabiliaceae;
OC Saccharicrinis.
OX NCBI_TaxID=869213 {ECO:0000313|EMBL:GAF01427.1, ECO:0000313|Proteomes:UP000019402};
RN [1] {ECO:0000313|EMBL:GAF01427.1, ECO:0000313|Proteomes:UP000019402}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JCM 21142 {ECO:0000313|EMBL:GAF01427.1,
RC ECO:0000313|Proteomes:UP000019402};
RA Starns D., Oshima K., Suda W., Iino T., Yuki M., Inoue J., Kitamura K.,
RA Iida T., Darby A., Hattori M., Ohkuma M.;
RT "Draft Genome Sequence of Cytophaga fermentans JCM 21142T, a Facultative
RT Anaerobe Isolated from Marine Mud.";
RL Genome Announc. 2:e00206-14(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 -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000256|HAMAP-Rule:MF_00198};
CC Multi-pass membrane protein {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:GAF01427.1}.
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DR EMBL; BAMD01000001; GAF01427.1; -; Genomic_DNA.
DR AlphaFoldDB; W7Y0F0; -.
DR STRING; 869213.GCA_000517085_04442; -.
DR eggNOG; COG4262; Bacteria.
DR OrthoDB; 9793120at2; -.
DR UniPathway; UPA00248; UER00314.
DR Proteomes; UP000019402; Unassembled WGS sequence.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0004766; F:spermidine synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0010487; F:thermospermine synthase activity; IEA:UniProt.
DR GO; GO:0008295; P:spermidine biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd02440; AdoMet_MTases; 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 PANTHER; PTHR43317:SF9; POLYAMINE AMINOPROPYLTRANSFERASE 2; 1.
DR PANTHER; PTHR43317; THERMOSPERMINE SYNTHASE ACAULIS5; 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 Cell membrane {ECO:0000256|HAMAP-Rule:MF_00198};
KW Membrane {ECO:0000256|HAMAP-Rule:MF_00198};
KW Polyamine biosynthesis {ECO:0000256|ARBA:ARBA00023115, ECO:0000256|HAMAP-
KW Rule:MF_00198}; Reference proteome {ECO:0000313|Proteomes:UP000019402};
KW Spermidine biosynthesis {ECO:0000256|HAMAP-Rule:MF_00198};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00198}; Transmembrane {ECO:0000256|HAMAP-Rule:MF_00198};
KW Transmembrane helix {ECO:0000256|HAMAP-Rule:MF_00198}.
FT TRANSMEM 42..62
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 74..98
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 104..125
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 146..165
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 171..188
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 200..218
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT DOMAIN 213..448
FT /note="PABS"
FT /evidence="ECO:0000259|PROSITE:PS51006"
FT ACT_SITE 369
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198,
FT ECO:0000256|PROSITE-ProRule:PRU00354"
FT BINDING 243
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 273
FT /ligand="spermidine"
FT /ligand_id="ChEBI:CHEBI:57834"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 297
FT /ligand="spermidine"
FT /ligand_id="ChEBI:CHEBI:57834"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 317
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 351..352
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
SQ SEQUENCE 517 AA; 58612 MW; A355C4358FA64A50 CRC64;
MFKVKNRYSA ILMAAIFATG FSGIVAEYLL STLASYFLGD STVQWALIVS TMMFSMGLGS
RISKSFESRL TEKFLMLEFI LSLVVSFVPL IVYTASAYMQ SLSILIYSCS ITIGILIGME
IPLVTRINDQ YDDLRVNISK VLENDYYGSL LGGVFFAFIG IPFLGINYTP FVLGLVNFSV
AIGVYIFLKK YIDSGFKKYF NVAIVFISII IIGGAFMADP IIKYGEQRKY KDKVVYAEQT
RYQRIVITQW KKDFWLYLNG NQQLCTMDEM MYHEPLVHPA MSLHPLPKDV LVFGGGDGCA
VREILKYQTT DKITLVDLDP AMTKLGMEYP LLTELNKGAL SNKKVEILNK DGFVFLNEDT
AFYDVVIIDL PDPRTVELGR LYSEEFYRTA YKHLRPGGVI ITQAGSPYFA TKAFKCIIKT
MESAGFNTIA LHNQVITLGE WGWSLGVKTD GAYPLKKALQ SLRFKDIETR WIDHEAMQLI
TSFGKNIYPG QSDSVQVNKI QDPVLYRYYL KGNWDLY
//
