ID   HIS6_SYNY3              Reviewed;         261 AA.
AC   P74106;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1997, sequence version 1.
DT   25-MAY-2022, entry version 127.
DE   RecName: Full=Imidazole glycerol phosphate synthase subunit HisF;
DE            EC=4.3.2.10;
DE   AltName: Full=IGP synthase cyclase subunit;
DE   AltName: Full=IGP synthase subunit HisF;
DE   AltName: Full=ImGP synthase subunit HisF;
DE            Short=IGPS subunit HisF;
GN   Name=hisF; OrderedLocusNames=sll1893;
OS   Synechocystis sp. (strain PCC 6803 / Kazusa).
OC   Bacteria; Cyanobacteria; Synechococcales; Merismopediaceae; Synechocystis;
OC   unclassified Synechocystis.
OX   NCBI_TaxID=1111708;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 6803 / Kazusa;
RX   PubMed=8905231; DOI=10.1093/dnares/3.3.109;
RA   Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y.,
RA   Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T.,
RA   Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.,
RA   Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. II. Sequence determination of the entire
RT   genome and assignment of potential protein-coding regions.";
RL   DNA Res. 3:109-136(1996).
CC   -!- FUNCTION: IGPS catalyzes the conversion of PRFAR and glutamine to IGP,
CC       AICAR and glutamate. The HisF subunit catalyzes the cyclization
CC       activity that produces IGP and AICAR from PRFAR using the ammonia
CC       provided by the HisH subunit (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5-[(5-phospho-1-deoxy-D-ribulos-1-ylimino)methylamino]-1-(5-
CC         phospho-beta-D-ribosyl)imidazole-4-carboxamide + L-glutamine = 5-
CC         amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide + D-
CC         erythro-1-(imidazol-4-yl)glycerol 3-phosphate + H(+) + L-glutamate;
CC         Xref=Rhea:RHEA:24793, ChEBI:CHEBI:15378, ChEBI:CHEBI:29985,
CC         ChEBI:CHEBI:58278, ChEBI:CHEBI:58359, ChEBI:CHEBI:58475,
CC         ChEBI:CHEBI:58525; EC=4.3.2.10;
CC   -!- PATHWAY: Amino-acid biosynthesis; L-histidine biosynthesis; L-histidine
CC       from 5-phospho-alpha-D-ribose 1-diphosphate: step 5/9.
CC   -!- SUBUNIT: Heterodimer of HisH and HisF. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the HisA/HisF family. {ECO:0000305}.
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DR   EMBL; BA000022; BAA18192.1; -; Genomic_DNA.
DR   PIR; S75631; S75631.
DR   AlphaFoldDB; P74106; -.
DR   SMR; P74106; -.
DR   STRING; 1148.1653277; -.
DR   PaxDb; P74106; -.
DR   EnsemblBacteria; BAA18192; BAA18192; BAA18192.
DR   KEGG; syn:sll1893; -.
DR   eggNOG; COG0107; Bacteria.
DR   InParanoid; P74106; -.
DR   OMA; IFHYKET; -.
DR   PhylomeDB; P74106; -.
DR   UniPathway; UPA00031; UER00010.
DR   Proteomes; UP000001425; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0000107; F:imidazoleglycerol-phosphate synthase activity; IBA:GO_Central.
DR   GO; GO:0016829; F:lyase activity; IEA:UniProtKB-KW.
DR   GO; GO:0000105; P:histidine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd04731; HisF; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_01013; HisF; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR006062; His_biosynth.
DR   InterPro; IPR004651; HisF.
DR   InterPro; IPR011060; RibuloseP-bd_barrel.
DR   Pfam; PF00977; His_biosynth; 1.
DR   SUPFAM; SSF51366; SSF51366; 1.
DR   TIGRFAMs; TIGR00735; hisF; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Histidine biosynthesis; Lyase;
KW   Reference proteome.
FT   CHAIN           1..261
FT                   /note="Imidazole glycerol phosphate synthase subunit HisF"
FT                   /id="PRO_0000142249"
FT   ACT_SITE        12
FT                   /evidence="ECO:0000255"
FT   ACT_SITE        131
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   261 AA;  27974 MW;  91FB2006290659EC CRC64;
     MTLAKRILPC LDVNAGRVVK GINFVDLQDA GDPVELARAY NEAGADELVF LDITATHEQR
     DTIIDVVYRT AEEVFIPLTV GGGISTLEHI KNLLRAGADK VSVNSSAVRD PDFISRASDR
     FGRQCIVVAI DARRRLDADN PGWDVYVRGG RENTGLDAIA WAEEVAKRGA GELLVTSMDG
     DGTQAGYDLA LTAAIAERVE IPVIASGGAG NCQHVYEAFT EGKAEAALLA SLLHYGQLTI
     GELKTFLEAR QIPVRHTAVC G