ID   ASTB_IDILO              Reviewed;         447 AA.
AC   Q5QWI1;
DT   28-NOV-2006, integrated into UniProtKB/Swiss-Prot.
DT   28-NOV-2006, sequence version 2.
DT   03-AUG-2022, entry version 100.
DE   RecName: Full=N-succinylarginine dihydrolase {ECO:0000255|HAMAP-Rule:MF_01172};
DE            EC=3.5.3.23 {ECO:0000255|HAMAP-Rule:MF_01172};
GN   Name=astB {ECO:0000255|HAMAP-Rule:MF_01172}; OrderedLocusNames=IL1011;
OS   Idiomarina loihiensis (strain ATCC BAA-735 / DSM 15497 / L2-TR).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales;
OC   Idiomarinaceae; Idiomarina.
OX   NCBI_TaxID=283942;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-735 / DSM 15497 / L2-TR;
RX   PubMed=15596722; DOI=10.1073/pnas.0407638102;
RA   Hou S., Saw J.H., Lee K.S., Freitas T.A., Belisle C., Kawarabayasi Y.,
RA   Donachie S.P., Pikina A., Galperin M.Y., Koonin E.V., Makarova K.S.,
RA   Omelchenko M.V., Sorokin A., Wolf Y.I., Li Q.X., Keum Y.S., Campbell S.,
RA   Denery J., Aizawa S., Shibata S., Malahoff A., Alam M.;
RT   "Genome sequence of the deep-sea gamma-proteobacterium Idiomarina
RT   loihiensis reveals amino acid fermentation as a source of carbon and
RT   energy.";
RL   Proc. Natl. Acad. Sci. U.S.A. 101:18036-18041(2004).
CC   -!- FUNCTION: Catalyzes the hydrolysis of N(2)-succinylarginine into N(2)-
CC       succinylornithine, ammonia and CO(2). {ECO:0000255|HAMAP-
CC       Rule:MF_01172}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 H(+) + 2 H2O + N(2)-succinyl-L-arginine = CO2 + N(2)-
CC         succinyl-L-ornithine + 2 NH4(+); Xref=Rhea:RHEA:19533,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC         ChEBI:CHEBI:28938, ChEBI:CHEBI:58241, ChEBI:CHEBI:58514; EC=3.5.3.23;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01172};
CC   -!- PATHWAY: Amino-acid degradation; L-arginine degradation via AST
CC       pathway; L-glutamate and succinate from L-arginine: step 2/5.
CC       {ECO:0000255|HAMAP-Rule:MF_01172}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01172}.
CC   -!- SIMILARITY: Belongs to the succinylarginine dihydrolase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01172}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAV81851.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AE017340; AAV81851.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_011234262.1; NC_006512.1.
DR   AlphaFoldDB; Q5QWI1; -.
DR   SMR; Q5QWI1; -.
DR   STRING; 283942.IL1011; -.
DR   PRIDE; Q5QWI1; -.
DR   EnsemblBacteria; AAV81851; AAV81851; IL1011.
DR   KEGG; ilo:IL1011; -.
DR   eggNOG; COG3724; Bacteria.
DR   HOGENOM; CLU_053835_0_0_6; -.
DR   OrthoDB; 567590at2; -.
DR   UniPathway; UPA00185; UER00280.
DR   Proteomes; UP000001171; Chromosome.
DR   GO; GO:0009015; F:N-succinylarginine dihydrolase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019544; P:arginine catabolic process to glutamate; IEA:UniProtKB-UniRule.
DR   GO; GO:0019545; P:arginine catabolic process to succinate; IEA:UniProtKB-UniPathway.
DR   Gene3D; 3.75.10.20; -; 1.
DR   HAMAP; MF_01172; AstB; 1.
DR   InterPro; IPR037031; AstB_sf.
DR   InterPro; IPR007079; SuccinylArg_d-Hdrlase_AstB.
DR   Pfam; PF04996; AstB; 1.
DR   TIGRFAMs; TIGR03241; arg_catab_astB; 1.
PE   3: Inferred from homology;
KW   Arginine metabolism; Hydrolase; Reference proteome.
FT   CHAIN           1..447
FT                   /note="N-succinylarginine dihydrolase"
FT                   /id="PRO_0000262354"
FT   ACT_SITE        174
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01172"
FT   ACT_SITE        250
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01172"
FT   ACT_SITE        370
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01172"
FT   BINDING         19..28
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01172"
FT   BINDING         110
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01172"
FT   BINDING         137..138
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01172"
FT   BINDING         214
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01172"
FT   BINDING         252
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01172"
FT   BINDING         364
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01172"
SQ   SEQUENCE   447 AA;  49804 MW;  EC15CDB937EF3D2D CRC64;
     MQHFEVNYDG LVGPTHNYAG LSFGNVASLA NAKATSSPKH AALQGLKKMK ALHDMGMKQG
     VLAPQERPDI FALRRLGFHG TDSEVLYRAA TEAPAIFQAV CSASSMWTAN AATVSPSADT
     ANGKVHFTPA NLTNKFHRSL EPQTSGRILQ AMFNNGRYFE HHTHLPDNEH FGDEGAANHT
     RLCREYGHAG IELFVFGRYA FDSSKPAPKR FPARQTLEAS QAIARLHGLS EDNTVYIQQN
     PDVIDQGVFH NDVIAVGNQN VLFYHEQAFT DTESKLAEIQ RKFGEHPLHF IKVATEQVSI
     QDAVNTYLFN TQLITPPDGQ MTIIAPTECQ ENDNVRSYLE QLTQSADSPI KRVEYFDVKQ
     SMRNGGGPAC LRLRVALNDE EIAGANQNCL MSDGLFNRLN QWVEKHYRDE LAVDDLRDPA
     LLEESRTALD ELTQIMKLGS VYPFQQD