ID   SPEA_NOSS1              Reviewed;         679 AA.
AC   Q8YRP3;
DT   29-MAR-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2002, sequence version 1.
DT   03-AUG-2022, entry version 101.
DE   RecName: Full=Biosynthetic arginine decarboxylase {ECO:0000255|HAMAP-Rule:MF_01417};
DE            Short=ADC {ECO:0000255|HAMAP-Rule:MF_01417};
DE            EC=4.1.1.19 {ECO:0000255|HAMAP-Rule:MF_01417};
GN   Name=speA {ECO:0000255|HAMAP-Rule:MF_01417}; OrderedLocusNames=all3401;
OS   Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX   NCBI_TaxID=103690;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX   PubMed=11759840; DOI=10.1093/dnares/8.5.205;
RA   Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A.,
RA   Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M.,
RA   Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M.,
RA   Takazawa M., Yamada M., Yasuda M., Tabata S.;
RT   "Complete genomic sequence of the filamentous nitrogen-fixing
RT   cyanobacterium Anabaena sp. strain PCC 7120.";
RL   DNA Res. 8:205-213(2001).
CC   -!- FUNCTION: Catalyzes the biosynthesis of agmatine from arginine.
CC       {ECO:0000255|HAMAP-Rule:MF_01417}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H(+) + L-arginine = agmatine + CO2; Xref=Rhea:RHEA:17641,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:32682,
CC         ChEBI:CHEBI:58145; EC=4.1.1.19; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01417};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01417};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01417};
CC   -!- SIMILARITY: Belongs to the Orn/Lys/Arg decarboxylase class-II family.
CC       SpeA subfamily. {ECO:0000255|HAMAP-Rule:MF_01417}.
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DR   EMBL; BA000019; BAB75100.1; -; Genomic_DNA.
DR   PIR; AB2231; AB2231.
DR   AlphaFoldDB; Q8YRP3; -.
DR   SMR; Q8YRP3; -.
DR   STRING; 103690.17132496; -.
DR   EnsemblBacteria; BAB75100; BAB75100; BAB75100.
DR   KEGG; ana:all3401; -.
DR   eggNOG; COG1166; Bacteria.
DR   OMA; AVEYTQH; -.
DR   BRENDA; 4.1.1.19; 8113.
DR   Proteomes; UP000002483; Chromosome.
DR   GO; GO:0008792; F:arginine decarboxylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0006527; P:arginine catabolic process; IEA:InterPro.
DR   GO; GO:0008295; P:spermidine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd06830; PLPDE_III_ADC; 1.
DR   Gene3D; 2.40.37.10; -; 1.
DR   Gene3D; 3.20.20.10; -; 1.
DR   HAMAP; MF_01417; SpeA; 1.
DR   InterPro; IPR009006; Ala_racemase/Decarboxylase_C.
DR   InterPro; IPR040634; Arg_decarb_HB.
DR   InterPro; IPR041128; Arg_decarbox_C.
DR   InterPro; IPR002985; Arg_decrbxlase.
DR   InterPro; IPR022657; De-COase2_CS.
DR   InterPro; IPR022644; De-COase2_N.
DR   InterPro; IPR022653; De-COase2_pyr-phos_BS.
DR   InterPro; IPR000183; Orn/DAP/Arg_de-COase.
DR   InterPro; IPR029066; PLP-binding_barrel.
DR   PANTHER; PTHR43295; PTHR43295; 1.
DR   Pfam; PF17810; Arg_decarb_HB; 1.
DR   Pfam; PF17944; Arg_decarbox_C; 1.
DR   Pfam; PF02784; Orn_Arg_deC_N; 1.
DR   PIRSF; PIRSF001336; Arg_decrbxlase; 1.
DR   PRINTS; PR01180; ARGDCRBXLASE.
DR   PRINTS; PR01179; ODADCRBXLASE.
DR   SUPFAM; SSF50621; SSF50621; 1.
DR   SUPFAM; SSF51419; SSF51419; 1.
DR   TIGRFAMs; TIGR01273; speA; 1.
DR   PROSITE; PS00878; ODR_DC_2_1; 1.
DR   PROSITE; PS00879; ODR_DC_2_2; 1.
PE   3: Inferred from homology;
KW   Decarboxylase; Lyase; Magnesium; Metal-binding; Polyamine biosynthesis;
KW   Pyridoxal phosphate; Reference proteome; Spermidine biosynthesis.
FT   CHAIN           1..679
FT                   /note="Biosynthetic arginine decarboxylase"
FT                   /id="PRO_0000149956"
FT   REGION          1..43
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         331..341
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01417"
FT   MOD_RES         149
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01417"
SQ   SEQUENCE   679 AA;  76821 MW;  7A0AABEBB9FC6482 CRC64;
     MKHRGQEEMG VESTATSDEV VKVPANGNKL EGKNHKQKKL LPTNTPGDVS RVWKIEDSEA
     LYRIEGWGQP YFSINAAGHV TVSPKGDRGG SLDLFELVNA LKQRSLGLPL LIRFSDILED
     RIERLNACFA KAIARYNYPG VYRGVFPVKC NQQRHLIEDL VRFGRPHQFG LEAGSKPELM
     IALALLDTPG SLLICNGYKD REYVETAMLS QRLGQTPIIV LEQVEEVDLV IAASHQLGIK
     PILGVRAKLS TQGMGRWGTS TGDRAKFGLT IPEIIQAVDK LRDADLLDSL QLMHFHIGSQ
     ISAINVIKDA IQEASRIYVE LASLGANMKY LDVGGGLGVD YDGSQTNFYA SKNYNMQNYA
     NDIVAELKDT CAEKQIPVPT LISESGRAIA SHQSVLIFDV LSTSDVPRDN PEPPKEGESP
     VINYLWETYQ SINKENYQEF YHDATQFKEE AISRFNLGIL RLRERAKAER LYWACCQKIL
     DIIRQHDYVP DELEDLEKIM ASIYYINLSV FQSAPDCWAI DQLFPIMPIH RLDEEPTQRG
     ILADLTCDSD GKIDRFIDLR DVKSVLELHP FQPGEPYYMG MFLNGAYQEI MGNLHNLFGD
     TNAVHIQLTP KGYQIEHVVK GDTMSEVVSY VQYDSEDMVE NIRQRCERAL EEKRITLAES
     QRLLQTYEQS LRRYTYLNS