ID A0A285QNB5_9ACTN Unreviewed; 550 AA.
AC A0A285QNB5;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 26.
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=SAMN06272789_3195 {ECO:0000313|EMBL:SOB83004.1};
OS Streptomyces sp. 1331.2.
OC Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC Streptomycetaceae; Streptomyces.
OX NCBI_TaxID=1938835 {ECO:0000313|EMBL:SOB83004.1, ECO:0000313|Proteomes:UP000219030};
RN [1] {ECO:0000313|Proteomes:UP000219030}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=1331.2 {ECO:0000313|Proteomes:UP000219030};
RA Varghese N., Submissions S.;
RL Submitted (JUL-2017) to the EMBL/GenBank/DDBJ databases.
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}.
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DR EMBL; OBMJ01000001; SOB83004.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A285QNB5; -.
DR UniPathway; UPA00248; UER00314.
DR Proteomes; UP000219030; 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 Gene3D; 1.20.1250.20; MFS general substrate transporter like domains; 1.
DR Gene3D; 3.40.50.150; Vaccinia Virus protein VP39; 1.
DR HAMAP; MF_00198; Spermidine_synth; 1.
DR InterPro; IPR036259; MFS_trans_sf.
DR InterPro; IPR030374; PABS.
DR InterPro; IPR030373; PABS_CS.
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; SSF103473; MFS general substrate transporter; 1.
DR SUPFAM; SSF53335; S-adenosyl-L-methionine-dependent methyltransferases; 1.
DR PROSITE; PS01330; PABS_1; 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:UP000219030};
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 32..51
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 71..88
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 100..124
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 130..153
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 165..191
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 197..215
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT TRANSMEM 227..245
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT DOMAIN 232..503
FT /note="PABS"
FT /evidence="ECO:0000259|PROSITE:PS51006"
FT REGION 1..20
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 409
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198,
FT ECO:0000256|PROSITE-ProRule:PRU00354"
FT BINDING 271
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 325
FT /ligand="spermidine"
FT /ligand_id="ChEBI:CHEBI:57834"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 345
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 418
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
SQ SEQUENCE 550 AA; 57000 MW; DDBF03DC90741954 CRC64;
MDLDDGTPPR PGHGLTPLPA RRRSRLRSRP RLARLTVLLA AFVCAACGLV YELELVALGD
YLLGDAVTQT SVVLSVMVFA MGLGSLLAKR LTRRPATAFA LVECALALTG GLSVLALYSC
WAWLGRCQPA MVGLTCLIGI LIGAEIPLLM TLIQRIRRED AGRAAADLFA ADYVGALIGG
LAFPFLLLPA LGPGDGALLT GAVNAVAGAA VVLWLFREEP APRIRRLLWG GCLLVLAVLA
AAAAGSDAVE RAARHALYGD QVRYATRSRH QEIVLTGPAE GPLRLYLDGR LAVCGPDEYR
GSEGLVHPAM ADGPDARVLL LGGGDGLALR EVLRHRGVRS VRLVDADAAL PRLARTDPGL
AALGGHSLDD PRVRTTAADP LAWLRDANAG GSTGVSDGGD GPYDVVLADL PAPADGGPVT
FHSQEFYGLA ARVLSPGGRI AVRAGSDPDE TGGPGDLDGL WQIESGLRTA GLQTTPYAVP
GSATGSCRPG PPDTAQNFLL AAATSPPLTL APDAPAPRAL TPDTLRASAA RLTALRPTRP
PAALTLLGPR
//
