ID   HUTH_CERSK              Reviewed;         507 AA.
AC   B9KSW6;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-MAR-2009, sequence version 1.
DT   25-MAY-2022, entry version 66.
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};
GN   OrderedLocusNames=RSKD131_1252;
OS   Cereibacter sphaeroides (strain KD131 / KCTC 12085) (Rhodobacter
OS   sphaeroides).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Rhodobacteraceae; Cereibacter.
OX   NCBI_TaxID=557760;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=KD131 / KCTC 12085;
RX   PubMed=19028901; DOI=10.1128/jb.01565-08;
RA   Lim S.-K., Kim S.J., Cha S.H., Oh Y.-K., Rhee H.-J., Kim M.-S., Lee J.K.;
RT   "Complete genome sequence of Rhodobacter sphaeroides KD131.";
RL   J. Bacteriol. 191:1118-1119(2009).
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; CP001150; ACM01112.1; -; Genomic_DNA.
DR   RefSeq; WP_015920620.1; NC_011963.1.
DR   AlphaFoldDB; B9KSW6; -.
DR   SMR; B9KSW6; -.
DR   EnsemblBacteria; ACM01112; ACM01112; RSKD131_1252.
DR   GeneID; 67446675; -.
DR   KEGG; rsk:RSKD131_1252; -.
DR   HOGENOM; CLU_014801_4_0_5; -.
DR   OMA; CAPQVAG; -.
DR   UniPathway; UPA00379; UER00549.
DR   Proteomes; UP000001597; Chromosome 1.
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.
FT   CHAIN           1..507
FT                   /note="Histidine ammonia-lyase"
FT                   /id="PRO_1000125096"
FT   MOD_RES         142
FT                   /note="2,3-didehydroalanine (Ser)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00229"
FT   CROSSLNK        141..143
FT                   /note="5-imidazolinone (Ala-Gly)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00229"
SQ   SEQUENCE   507 AA;  51792 MW;  9BC97E4CC5DF2ADD CRC64;
     MEILVPGQAT LAQLEAIWRE GRRARLAPEA RPAVEAAAAR VAAAAAGTAP VYGVNTGFGK
     LASLKIAPAD TAQLQRNLIL SHCCGVGEPM PPSTARLMMA LKLLSLGRGA SGVRWKIVAL
     LEGMLAAGVT PVIPAQGSVG ASGDLAPLAH MAAVMIGEGE AEVGGRRLPG AAALAHAGLA
     PVALGPKEGL ALINGTQFST AYALAGLFEG WRAAQAALVI SALSTDAIMG STAPLRPEIH
     ALRGHAGQIE AAATMRALLE GSAIRESHRE GDQRVQDPYC IRCQPQVTGA AMDVLRMAAG
     TLATEANAAT DNPLVLSDGR IVSGGNFHAE PVGFAADMIA LALSEIGAIA QRRVALMVDP
     TLSFDLPPFL TPEPGLNSGL MIAEVTTAAL MSENKHMAAP TVTDSTPTSA NQEDHVSMAA
     HGARRLGRMV ENLAVILGTE AICAAQGVEF RAPLATSAPL GAVLARLRAE VPRLGADRIL
     APDLAAAARL VRTGALARAA GLPLPAL