ID   HUTH_ACIAC              Reviewed;         512 AA.
AC   A1TRE4;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   25-MAY-2022, entry version 86.
DE   RecName: Full=Histidine ammonia-lyase {ECO:0000255|HAMAP-Rule:MF_00229};
DE            Short=Histidase {ECO:0000255|HAMAP-Rule:MF_00229};
DE            EC=4.3.1.3 {ECO:0000255|HAMAP-Rule:MF_00229};
GN   Name=hutH {ECO:0000255|HAMAP-Rule:MF_00229}; OrderedLocusNames=Aave_2965;
OS   Acidovorax citrulli (strain AAC00-1) (Acidovorax avenae subsp. citrulli).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Comamonadaceae; Acidovorax.
OX   NCBI_TaxID=397945;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AAC00-1;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Dalin E., Tice H., Pitluck S., Kiss H., Brettin T.,
RA   Bruce D., Han C., Tapia R., Gilna P., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Kim E., Stahl D., Richardson P.;
RT   "Complete sequence of Acidovorax avenae subsp. citrulli AAC00-1.";
RL   Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=L-histidine = NH4(+) + trans-urocanate; Xref=Rhea:RHEA:21232,
CC         ChEBI:CHEBI:17771, ChEBI:CHEBI:28938, ChEBI:CHEBI:57595; EC=4.3.1.3;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00229};
CC   -!- PATHWAY: Amino-acid degradation; L-histidine degradation into L-
CC       glutamate; N-formimidoyl-L-glutamate from L-histidine: step 1/3.
CC       {ECO:0000255|HAMAP-Rule:MF_00229}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00229}.
CC   -!- PTM: Contains an active site 4-methylidene-imidazol-5-one (MIO), which
CC       is formed autocatalytically by cyclization and dehydration of residues
CC       Ala-Ser-Gly. {ECO:0000255|HAMAP-Rule:MF_00229}.
CC   -!- SIMILARITY: Belongs to the PAL/histidase family. {ECO:0000255|HAMAP-
CC       Rule:MF_00229}.
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DR   EMBL; CP000512; ABM33532.1; -; Genomic_DNA.
DR   RefSeq; WP_011796043.1; NC_008752.1.
DR   AlphaFoldDB; A1TRE4; -.
DR   SMR; A1TRE4; -.
DR   STRING; 397945.Aave_2965; -.
DR   EnsemblBacteria; ABM33532; ABM33532; Aave_2965.
DR   KEGG; aav:Aave_2965; -.
DR   eggNOG; COG2986; Bacteria.
DR   HOGENOM; CLU_014801_4_0_4; -.
DR   OMA; CAPQVAG; -.
DR   OrthoDB; 715502at2; -.
DR   UniPathway; UPA00379; UER00549.
DR   Proteomes; UP000002596; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004397; F:histidine ammonia-lyase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019556; P:histidine catabolic process to glutamate and formamide; IEA:UniProtKB-UniPathway.
DR   GO; GO:0019557; P:histidine catabolic process to glutamate and formate; IEA:UniProtKB-UniPathway.
DR   CDD; cd00332; PAL-HAL; 1.
DR   Gene3D; 1.10.275.10; -; 1.
DR   HAMAP; MF_00229; His_ammonia_lyase; 1.
DR   InterPro; IPR001106; Aromatic_Lyase.
DR   InterPro; IPR024083; Fumarase/histidase_N.
DR   InterPro; IPR005921; HutH.
DR   InterPro; IPR008948; L-Aspartase-like.
DR   InterPro; IPR022313; Phe/His_NH3-lyase_AS.
DR   PANTHER; PTHR10362; PTHR10362; 1.
DR   Pfam; PF00221; Lyase_aromatic; 1.
DR   SUPFAM; SSF48557; SSF48557; 1.
DR   TIGRFAMs; TIGR01225; hutH; 1.
DR   PROSITE; PS00488; PAL_HISTIDASE; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Histidine metabolism; Lyase; Reference proteome.
FT   CHAIN           1..512
FT                   /note="Histidine ammonia-lyase"
FT                   /id="PRO_1000021540"
FT   MOD_RES         147
FT                   /note="2,3-didehydroalanine (Ser)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00229"
FT   CROSSLNK        146..148
FT                   /note="5-imidazolinone (Ala-Gly)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00229"
SQ   SEQUENCE   512 AA;  52711 MW;  9176E0EDC2C49E1B CRC64;
     MSAMPTLVLH PGRVTLAELR AIAAGGQRLA LDASALAGMR ASQATVDRIA LEEQVVYGIN
     TGFGKLASTK IAHDRLAELQ RNLVLSHSVG TGDPLPDGVV RMVLATKAVS LARGHSGVRP
     ALVDALLALA NADVLPVIPA KGSVGASGDL APLAHLACVL IGEGAAQVGG RIVTGREAMA
     AVGLEPFVLG PKEGLALLNG TQVSTALALA GLFAAENVFA AGLVSGCLTL EAIKGSVKPF
     DARIHEARGQ AGQIAVAAAV RALLEGSAID PSHPDCGRVQ DPYSIRCVPQ VMGACLDNLS
     HAARVLQIEA NAASDNPLVF TDTGEVISGG NFHAEPVAFA ADIIALALSE IGAISERRLA
     LLLDTGLSGL PAFLIRDSGV NSGFMIAQVT AAALAAENQC LAHPSSVTSL PTSANQEDHV
     SMATYAARRL LDMARNTAVI VGIEAMAAAQ GMEFDRSLKS SPLIEAQFAA IRGRVAFLEQ
     DRYLAPDIEA MRLWASTSAW PAPLAACLPS FQ