ID S6A4R9_9CREN Unreviewed; 284 AA.
AC S6A4R9;
DT 16-OCT-2013, integrated into UniProtKB/TrEMBL.
DT 16-OCT-2013, sequence version 1.
DT 27-MAR-2024, entry version 55.
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=N186_00095 {ECO:0000313|EMBL:AGT34417.1};
OS Thermofilum adornatum.
OC Archaea; Thermoproteota; Thermoprotei; Thermofilales; Thermofilaceae;
OC Thermofilum.
OX NCBI_TaxID=1365176 {ECO:0000313|EMBL:AGT34417.1, ECO:0000313|Proteomes:UP000015543};
RN [1] {ECO:0000313|EMBL:AGT34417.1, ECO:0000313|Proteomes:UP000015543}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=1910b {ECO:0000313|Proteomes:UP000015543};
RX PubMed=24029764;
RA Dominova I.N., Kublanov I.V., Podosokorskaya O.A., Derbikova K.S.,
RA Patrushev M.V., Toshchakov S.V.;
RT "Complete Genomic Sequence of 'Thermofilum adornatus' Strain 1910bT, a
RT Hyperthermophilic Anaerobic Organotrophic Crenarchaeon.";
RL Genome Announc. 1:e00726-13(2013).
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}.
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DR EMBL; CP006646; AGT34417.1; -; Genomic_DNA.
DR RefSeq; WP_020961715.1; NC_022093.1.
DR AlphaFoldDB; S6A4R9; -.
DR GeneID; 25406505; -.
DR KEGG; thb:N186_00095; -.
DR PATRIC; fig|1365176.7.peg.20; -.
DR eggNOG; arCOG00050; Archaea.
DR HOGENOM; CLU_048199_0_1_2; -.
DR OrthoDB; 10538at2157; -.
DR UniPathway; UPA00248; UER00314.
DR Proteomes; UP000015543; Chromosome.
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; 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; 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; PTHR43317:SF9; POLYAMINE AMINOPROPYLTRANSFERASE 2; 1.
DR PANTHER; PTHR43317; THERMOSPERMINE SYNTHASE ACAULIS5; 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; PS01330; PABS_1; 1.
DR PROSITE; PS51006; PABS_2; 1.
PE 3: Inferred from homology;
KW Polyamine biosynthesis {ECO:0000256|HAMAP-Rule:MF_00198,
KW ECO:0000256|PROSITE-ProRule:PRU00354};
KW Reference proteome {ECO:0000313|Proteomes:UP000015543};
KW Spermidine biosynthesis {ECO:0000256|HAMAP-Rule:MF_00198};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00198}.
FT DOMAIN 5..242
FT /note="PABS"
FT /evidence="ECO:0000259|PROSITE:PS51006"
FT ACT_SITE 161
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198,
FT ECO:0000256|PROSITE-ProRule:PRU00354"
FT BINDING 35
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 66
FT /ligand="spermidine"
FT /ligand_id="ChEBI:CHEBI:57834"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 90
FT /ligand="spermidine"
FT /ligand_id="ChEBI:CHEBI:57834"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 110
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 142..143
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
FT BINDING 169
FT /ligand="S-methyl-5'-thioadenosine"
FT /ligand_id="ChEBI:CHEBI:17509"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00198"
SQ SEQUENCE 284 AA; 32316 MW; 5E900B9893F319E6 CRC64;
MSSSDGLVII EPVSEYTRQI LKLKKIYAVE KTPYQEIVFA ELEGFGKALL IDEFVQSTEK
DEFIYHELLV HPAMALHPEP KRVLIIGGGE GASLREVLKH GTVEDAVMVD IDEKVVEFSK
RFLEVMHRGS FFDPRARVVI MDGLEYVKKT ADGTFDVVVM DLTDPYAGPT ALPLYSYEAF
REIKRILKPE GVMATQAGSS YFYPKEYRQV KENIEKNFKH VAEYWAWIPS FATNVNFIVA
SDAYDLYGLS AEMFDTRLKS RNVNTKYLVG RRLTAHLSMG VLYG
//
