ID H1LR62_9PAST Unreviewed; 336 AA.
AC H1LR62;
DT 21-MAR-2012, integrated into UniProtKB/TrEMBL.
DT 21-MAR-2012, sequence version 1.
DT 27-MAR-2024, entry version 60.
DE RecName: Full=HTH-type transcriptional repressor PurR {ECO:0000256|HAMAP-Rule:MF_01277};
DE AltName: Full=Pur regulon repressor {ECO:0000256|HAMAP-Rule:MF_01277};
DE AltName: Full=Purine nucleotide synthesis repressor {ECO:0000256|HAMAP-Rule:MF_01277};
GN Name=purR {ECO:0000256|HAMAP-Rule:MF_01277};
GN ORFNames=HMPREF9096_01790 {ECO:0000313|EMBL:EHO45299.1};
OS Haemophilus sp. oral taxon 851 str. F0397.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Pasteurellales;
OC Pasteurellaceae; Haemophilus.
OX NCBI_TaxID=762965 {ECO:0000313|EMBL:EHO45299.1, ECO:0000313|Proteomes:UP000005305};
RN [1] {ECO:0000313|EMBL:EHO45299.1, ECO:0000313|Proteomes:UP000005305}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=F0397 {ECO:0000313|EMBL:EHO45299.1,
RC ECO:0000313|Proteomes:UP000005305};
RA Weinstock G., Sodergren E., Clifton S., Fulton L., Fulton B., Courtney L.,
RA Fronick C., Harrison M., Strong C., Farmer C., Delahaunty K., Markovic C.,
RA Hall O., Minx P., Tomlinson C., Mitreva M., Hou S., Chen J., Wollam A.,
RA Pepin K.H., Johnson M., Bhonagiri V., Zhang X., Suruliraj S., Warren W.,
RA Chinwalla A., Mardis E.R., Wilson R.K.;
RL Submitted (SEP-2011) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Is the main repressor of the genes involved in the de novo
CC synthesis of purine nucleotides, regulating purB, purC, purEK, purF,
CC purHD, purL, purMN and guaBA expression. PurR is allosterically
CC activated to bind its cognate DNA by binding the purine corepressors,
CC hypoxanthine or guanine, thereby effecting transcription repression.
CC {ECO:0000256|HAMAP-Rule:MF_01277}.
CC -!- PATHWAY: Purine metabolism; purine nucleotide biosynthesis
CC [regulation]. {ECO:0000256|ARBA:ARBA00004693, ECO:0000256|HAMAP-
CC Rule:MF_01277}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01277}.
CC -!- DOMAIN: Consists of two structural and functional domains: an N-
CC terminal DNA-binding domain, approximately the first 60 residues, and a
CC larger C-terminal domain, approximately 280 residues, which imparts the
CC function of corepressor binding and oligomerization.
CC {ECO:0000256|HAMAP-Rule:MF_01277}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EHO45299.1}.
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DR EMBL; AGRK01000036; EHO45299.1; -; Genomic_DNA.
DR RefSeq; WP_009501025.1; NZ_JH591083.1.
DR AlphaFoldDB; H1LR62; -.
DR PATRIC; fig|762965.3.peg.1697; -.
DR HOGENOM; CLU_037628_6_2_6; -.
DR UniPathway; UPA00488; -.
DR Proteomes; UP000005305; Unassembled WGS sequence.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR GO; GO:0045892; P:negative regulation of DNA-templated transcription; IEA:UniProtKB-UniRule.
DR GO; GO:0006164; P:purine nucleotide biosynthetic process; IEA:UniProtKB-UniPathway.
DR CDD; cd01392; HTH_LacI; 1.
DR CDD; cd06275; PBP1_PurR; 1.
DR Gene3D; 3.40.50.2300; -; 2.
DR Gene3D; 1.10.260.40; lambda repressor-like DNA-binding domains; 1.
DR HAMAP; MF_01277; HTH_type_PurR; 1.
DR InterPro; IPR000843; HTH_LacI.
DR InterPro; IPR046335; LacI/GalR-like_sensor.
DR InterPro; IPR010982; Lambda_DNA-bd_dom_sf.
DR InterPro; IPR028082; Peripla_BP_I.
DR InterPro; IPR023588; Tscrpt_reg_HTH_PurR.
DR PANTHER; PTHR30146:SF152; HTH-TYPE TRANSCRIPTIONAL REGULATOR EBGR-RELATED; 1.
DR PANTHER; PTHR30146; LACI-RELATED TRANSCRIPTIONAL REPRESSOR; 1.
DR Pfam; PF00356; LacI; 1.
DR Pfam; PF13377; Peripla_BP_3; 1.
DR PRINTS; PR00036; HTHLACI.
DR SMART; SM00354; HTH_LACI; 1.
DR SUPFAM; SSF47413; lambda repressor-like DNA-binding domains; 1.
DR SUPFAM; SSF53822; Periplasmic binding protein-like I; 1.
DR PROSITE; PS00356; HTH_LACI_1; 1.
DR PROSITE; PS50932; HTH_LACI_2; 1.
PE 3: Inferred from homology;
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125, ECO:0000256|HAMAP-
KW Rule:MF_01277};
KW Purine biosynthesis {ECO:0000256|ARBA:ARBA00022755, ECO:0000256|HAMAP-
KW Rule:MF_01277}; Repressor {ECO:0000256|HAMAP-Rule:MF_01277};
KW Transcription {ECO:0000256|ARBA:ARBA00023163, ECO:0000256|HAMAP-
KW Rule:MF_01277};
KW Transcription regulation {ECO:0000256|ARBA:ARBA00023015, ECO:0000256|HAMAP-
KW Rule:MF_01277}.
FT DOMAIN 2..56
FT /note="HTH lacI-type"
FT /evidence="ECO:0000259|PROSITE:PS50932"
FT DNA_BIND 4..23
FT /note="H-T-H motif"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01277"
FT DNA_BIND 48..56
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01277"
FT BINDING 73
FT /ligand="hypoxanthine"
FT /ligand_id="ChEBI:CHEBI:17368"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01277"
FT BINDING 188
FT /ligand="hypoxanthine"
FT /ligand_id="ChEBI:CHEBI:17368"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01277"
FT BINDING 190
FT /ligand="hypoxanthine"
FT /ligand_id="ChEBI:CHEBI:17368"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01277"
FT BINDING 219
FT /ligand="hypoxanthine"
FT /ligand_id="ChEBI:CHEBI:17368"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01277"
FT BINDING 273
FT /ligand="hypoxanthine"
FT /ligand_id="ChEBI:CHEBI:17368"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01277"
SQ SEQUENCE 336 AA; 37383 MW; C4FDA6BB8E0EE63C CRC64;
MATIKDVAKM AGVSTTTVSH VINKTRFVAK DTEEAVLSAI KQLNYSPSAV ARSLKVNTTK
SIGMIVTTSE APYFAEIIHS VEEHCYRQGY SLFLCNTQNE PEKVKNHLEM LAKKRVDGLL
VMCSEYTQDS LDLLSSFSSI PMVVMDWGPN TNTDVIDDHS FDGGYLATKH LIECGHKKIG
IICGELNKTT AKTRYEGFLK AMADANLKVH EPWIFEGAFE PEDGYECMNR LLAQEELPTA
LFCCNDVMAL GAISALTEKG LRVPDDMSII GYDDIHASRF YAPPLTTIHQ SKLRLGRQAV
NILLERISQK DQGVQQYSRI DIGPELIIRK SVKSIL
//
