ID   HUTH_KLEP3              Reviewed;         508 AA.
AC   B5XZ79;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   25-NOV-2008, sequence version 1.
DT   25-MAY-2022, entry version 63.
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=KPK_3777;
OS   Klebsiella pneumoniae (strain 342).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Klebsiella/Raoultella group; Klebsiella.
OX   NCBI_TaxID=507522;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=342;
RX   PubMed=18654632; DOI=10.1371/journal.pgen.1000141;
RA   Fouts D.E., Tyler H.L., DeBoy R.T., Daugherty S., Ren Q., Badger J.H.,
RA   Durkin A.S., Huot H., Shrivastava S., Kothari S., Dodson R.J., Mohamoud Y.,
RA   Khouri H., Roesch L.F.W., Krogfelt K.A., Struve C., Triplett E.W.,
RA   Methe B.A.;
RT   "Complete genome sequence of the N2-fixing broad host range endophyte
RT   Klebsiella pneumoniae 342 and virulence predictions verified in mice.";
RL   PLoS Genet. 4:E1000141-E1000141(2008).
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; CP000964; ACI06892.1; -; Genomic_DNA.
DR   AlphaFoldDB; B5XZ79; -.
DR   SMR; B5XZ79; -.
DR   EnsemblBacteria; ACI06892; ACI06892; KPK_3777.
DR   KEGG; kpe:KPK_3777; -.
DR   HOGENOM; CLU_014801_4_0_6; -.
DR   OMA; CAPQVAG; -.
DR   OrthoDB; 715502at2; -.
DR   UniPathway; UPA00379; UER00549.
DR   Proteomes; UP000001734; 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.
FT   CHAIN           1..508
FT                   /note="Histidine ammonia-lyase"
FT                   /id="PRO_1000100441"
FT   MOD_RES         144
FT                   /note="2,3-didehydroalanine (Ser)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00229"
FT   CROSSLNK        143..145
FT                   /note="5-imidazolinone (Ala-Gly)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00229"
SQ   SEQUENCE   508 AA;  53960 MW;  1280C91AD5A6560C CRC64;
     MKSLTLIPGK LSLSQLREVY SHPLNITLDS SAFAAIDESV ACVNAILAEG RTAYGINTGF
     GLLAQTRIST DDLENLQRSL VLSHAAGVGE PLDDDLARLI MVLKINSLSR GFSGIRLSVI
     QALIGLVNAG VTPWIPAKGS VGASGDLAPL AHMSLTLLGE GKARVRGGEW LPATDALRQA
     GLEPITLAAK EGLALLNGTQ ASTAFALRGL FEAEDLFASA VVCGALTTEA ALGSRRPFDA
     RIHEVRGQRG QIDAAALYRH LLTDDSAISR SHHNCTKVQD PYSLRCQPQV MGACLTQIRQ
     AAEVLLAEAN AVSDNPLVFA AENDVISGGN FHAEPVAMAA DNIALAIAEI GSLSERRIAL
     MMDSHMSQLP PFLVKNGGVN SGFMIAQVTA AALASENKAL SHPHSVDSLP TSANQEDHVS
     MAPAAGRRLW AMAENTRGVL AVEWLAAAQG LDMREGLTTS PLLEEARHLL RERVPHYTQD
     RFFAPDIENA IALLAARHLT RLLPAVLH