UniProtKB - P37177 (PT1P_ECOLI)
Protein
Phosphoenolpyruvate-dependent phosphotransferase system
Gene
ptsP
Organism
Escherichia coli (strain K12)
Status
Functioni
Component of the phosphoenolpyruvate-dependent nitrogen-metabolic phosphotransferase system (nitrogen-metabolic PTS), that seems to be involved in regulating nitrogen metabolism. Enzyme I-Ntr transfers the phosphoryl group from phosphoenolpyruvate (PEP) to the phosphoryl carrier protein (NPr) (PubMed:10473571). Could function in the transcriptional regulation of sigma-54 dependent operons in conjunction with the NPr (PtsO) and EIIA-Ntr (PtsN) proteins (PubMed:8973315). Enzyme I-Ntr is specific for NPr (PubMed:10473571).2 Publications
Miscellaneous
The reaction takes place in three steps, mediated by a phosphocarrier histidine residue located on the surface of the central domain. The two first partial reactions are catalyzed at an active site located on the N-terminal domain, and the third partial reaction is catalyzed at an active site located on the C-terminal domain. For catalytic turnover, the central domain swivels from the concave surface of the N-terminal domain to that of the C-terminal domain.By similarity
Catalytic activityi
- L-histidyl-[protein] + phosphoenolpyruvate = Nπ-phospho-L-histidyl-[protein] + pyruvate1 PublicationEC:2.7.3.91 Publication
Cofactori
Mg2+1 PublicationNote: Mn2+ allows activity only at low concentrations. In the presence of low concentrations of Co2+ or Ni2+, activity could be measured, but at concentrations above 0.2 mM, strong inhibition is observed.1 Publication
Activity regulationi
Inhibited by GDP and FAD.1 Publication
Kineticsi
Enzyme I-Ntr activity requires high ionic strength.1 Publication
- KM=10 µM for mannitol phosphate1 Publication
- Vmax=1 µmol/min/mg enzyme1 Publication
pH dependencei
Optimum pH is 8.1 Publication
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Active sitei | 356 | Tele-phosphohistidine intermediateBy similarity | 1 | |
Binding sitei | 462 | PEPBy similarity | 1 | |
Binding sitei | 498 | PEPBy similarity | 1 | |
Metal bindingi | 597 | MagnesiumBy similarity | 1 | |
Metal bindingi | 621 | MagnesiumBy similarity | 1 | |
Binding sitei | 631 | PEPBy similarity | 1 | |
Active sitei | 668 | Proton donorBy similarity | 1 |
GO - Molecular functioni
- kinase activity Source: UniProtKB-KW
- metal ion binding Source: UniProtKB-KW
- phosphoenolpyruvate-protein phosphotransferase activity Source: EcoCyc
GO - Biological processi
- phosphoenolpyruvate-dependent sugar phosphotransferase system Source: UniProtKB-KW
- protein phosphorylation Source: EcoCyc
- response to organonitrogen compound Source: EcoCyc
Keywordsi
Molecular function | Kinase, Transferase |
Biological process | Phosphotransferase system, Sugar transport, Transport |
Ligand | Magnesium, Metal-binding |
Enzyme and pathway databases
BioCyci | EcoCyc:EG12188-MONOMER MetaCyc:EG12188-MONOMER |
Names & Taxonomyi
Protein namesi | Recommended name: Phosphoenolpyruvate-dependent phosphotransferase system1 Publication (EC:2.7.3.91 Publication)Alternative name(s): Enzyme I-Ntr1 Publication Short name: EINtr1 Publication Phosphotransferase system, enzyme I1 Publication |
Gene namesi | Name:ptsP Synonyms:ygdF, ygdO Ordered Locus Names:b2829, JW2797 |
Organismi | Escherichia coli (strain K12) |
Taxonomic identifieri | 83333 [NCBI] |
Taxonomic lineagei | Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacterales › Enterobacteriaceae › Escherichia › |
Proteomesi |
|
Subcellular locationi
Cytoplasm and Cytosol
- Cytoplasm Curated
Other locations
- cytoplasm Source: UniProtKB-SubCell
Keywords - Cellular componenti
CytoplasmPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000147095 | 1 – 748 | Phosphoenolpyruvate-dependent phosphotransferase systemAdd BLAST | 748 |
Proteomic databases
jPOSTi | P37177 |
PaxDbi | P37177 |
PRIDEi | P37177 |
Interactioni
Protein-protein interaction databases
BioGRIDi | 4263274, 26 interactors 851629, 4 interactors |
IntActi | P37177, 10 interactors |
STRINGi | 511145.b2829 |
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details3D structure databases
SASBDBi | P37177 |
SMRi | P37177 |
ModBasei | Search... |
PDBe-KBi | Search... |
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 1 – 127 | GAF1 PublicationAdd BLAST | 127 |
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 128 – 170 | Linker1 PublicationAdd BLAST | 43 | |
Regioni | 171 – 748 | PTS EI1 PublicationAdd BLAST | 578 | |
Regioni | 620 – 621 | PEP bindingBy similarity | 2 |
Domaini
The EI N-terminal domain contains the HPr binding site, the central domain the pyrophosphate/phosphate carrier histidine, and the C-terminal domain the pyruvate binding site.By similarity
The GAF domain is an important site of signal perception in prokaryotes and eukaryotes.Curated
Sequence similaritiesi
Belongs to the PEP-utilizing enzyme family.Curated
Phylogenomic databases
eggNOGi | COG3605, Bacteria |
HOGENOMi | CLU_007308_7_1_6 |
InParanoidi | P37177 |
PhylomeDBi | P37177 |
Family and domain databases
Gene3Di | 1.10.274.10, 1 hit 3.20.20.60, 1 hit 3.30.450.40, 1 hit |
InterProi | View protein in InterPro IPR003018, GAF IPR029016, GAF-like_dom_sf IPR008279, PEP-util_enz_mobile_dom IPR018274, PEP_util_AS IPR000121, PEP_util_C IPR023151, PEP_util_CS IPR036637, Phosphohistidine_dom_sf IPR006318, PTS_EI-like IPR008731, PTS_EIN IPR036618, PtsI_HPr-bd_sf IPR015813, Pyrv/PenolPyrv_Kinase-like_dom IPR040442, Pyrv_Kinase-like_dom_sf |
Pfami | View protein in Pfam PF01590, GAF, 1 hit PF05524, PEP-utilisers_N, 1 hit PF00391, PEP-utilizers, 1 hit PF02896, PEP-utilizers_C, 1 hit |
SMARTi | View protein in SMART SM00065, GAF, 1 hit |
SUPFAMi | SSF47831, SSF47831, 1 hit SSF51621, SSF51621, 1 hit SSF52009, SSF52009, 1 hit |
TIGRFAMsi | TIGR01417, PTS_I_fam, 1 hit |
PROSITEi | View protein in PROSITE PS00742, PEP_ENZYMES_2, 1 hit PS00370, PEP_ENZYMES_PHOS_SITE, 1 hit |
i Sequence
Sequence statusi: Complete.
P37177-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MLTRLREIVE KVASAPRLNE ALNILVTDIC LAMDTEVCSV YLADHDRRCY
60 70 80 90 100
YLMATRGLKK PRGRTVTLAF DEGIVGLVGR LAEPINLADA QKHPSFKYIP
110 120 130 140 150
SVKEERFRAF LGVPIIQRRQ LLGVLVVQQR ELRQYDESEE SFLVTLATQM
160 170 180 190 200
AAILSQSQLT ALFGQYRQTR IRALPAAPGV AIAEGWQDAT LPLMEQVYQA
210 220 230 240 250
STLDPALERE RLTGALEEAA NEFRRYSKRF AAGAQKETAA IFDLYSHLLS
260 270 280 290 300
DTRLRRELFA EVDKGSVAEW AVKTVIEKFA EQFAALSDNY LKERAGDLRA
310 320 330 340 350
LGQRLLFHLD DANQGPNAWP ERFILVADEL SATTLAELPQ DRLVGVVVRD
360 370 380 390 400
GAANSHAAIM VRALGIPTVM GADIQPSVLH RRTLIVDGYR GELLVDPEPV
410 420 430 440 450
LLQEYQRLIS EEIELSRLAE DDVNLPAQLK SGERIKVMLN AGLSPEHEEK
460 470 480 490 500
LGSRIDGIGL YRTEIPFMLQ SGFPSEEEQV AQYQGMLQMF NDKPVTLRTL
510 520 530 540 550
DVGADKQLPY MPISEENPCL GWRGIRITLD QPEIFLIQVR AMLRANAATG
560 570 580 590 600
NLNILLPMVT SLDEVDEARR LIERAGREVE EMIGYEIPKP RIGIMLEVPS
610 620 630 640 650
MVFMLPHLAK RVDFISVGTN DLTQYILAVD RNNTRVANIY DSLHPAMLRA
660 670 680 690 700
LAMIAREAEI HGIDLRLCGE MAGDPMCVAI LIGLGYRHLS MNGRSVARAK
710 720 730 740
YLLRRIDYAE AENLAQRSLE AQLATEVRHQ VAAFMERRGM GGLIRGGL
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | U29581 Genomic DNA Translation: AAB40476.1 U00096 Genomic DNA Translation: AAC75868.1 AP009048 Genomic DNA Translation: BAE76898.1 U12289 Genomic DNA Translation: AAA69023.1 |
PIRi | F65065 |
RefSeqi | NP_417306.1, NC_000913.3 WP_000957910.1, NZ_LN832404.1 |
Genome annotation databases
EnsemblBacteriai | AAC75868; AAC75868; b2829 BAE76898; BAE76898; BAE76898 |
GeneIDi | 57730369 947301 |
KEGGi | ecj:JW2797 eco:b2829 |
PATRICi | fig|1411691.4.peg.3906 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | U29581 Genomic DNA Translation: AAB40476.1 U00096 Genomic DNA Translation: AAC75868.1 AP009048 Genomic DNA Translation: BAE76898.1 U12289 Genomic DNA Translation: AAA69023.1 |
PIRi | F65065 |
RefSeqi | NP_417306.1, NC_000913.3 WP_000957910.1, NZ_LN832404.1 |
3D structure databases
Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
5T12 | X-ray | 2.30 | A | 170-424 | [»] | |
5T1O | NMR | - | B | 170-424 | [»] | |
SASBDBi | P37177 | |||||
SMRi | P37177 | |||||
ModBasei | Search... | |||||
PDBe-KBi | Search... |
Protein-protein interaction databases
BioGRIDi | 4263274, 26 interactors 851629, 4 interactors |
IntActi | P37177, 10 interactors |
STRINGi | 511145.b2829 |
Proteomic databases
jPOSTi | P37177 |
PaxDbi | P37177 |
PRIDEi | P37177 |
Genome annotation databases
EnsemblBacteriai | AAC75868; AAC75868; b2829 BAE76898; BAE76898; BAE76898 |
GeneIDi | 57730369 947301 |
KEGGi | ecj:JW2797 eco:b2829 |
PATRICi | fig|1411691.4.peg.3906 |
Organism-specific databases
EchoBASEi | EB2105 |
Phylogenomic databases
eggNOGi | COG3605, Bacteria |
HOGENOMi | CLU_007308_7_1_6 |
InParanoidi | P37177 |
PhylomeDBi | P37177 |
Enzyme and pathway databases
BioCyci | EcoCyc:EG12188-MONOMER MetaCyc:EG12188-MONOMER |
Miscellaneous databases
PROi | PR:P37177 |
Family and domain databases
Gene3Di | 1.10.274.10, 1 hit 3.20.20.60, 1 hit 3.30.450.40, 1 hit |
InterProi | View protein in InterPro IPR003018, GAF IPR029016, GAF-like_dom_sf IPR008279, PEP-util_enz_mobile_dom IPR018274, PEP_util_AS IPR000121, PEP_util_C IPR023151, PEP_util_CS IPR036637, Phosphohistidine_dom_sf IPR006318, PTS_EI-like IPR008731, PTS_EIN IPR036618, PtsI_HPr-bd_sf IPR015813, Pyrv/PenolPyrv_Kinase-like_dom IPR040442, Pyrv_Kinase-like_dom_sf |
Pfami | View protein in Pfam PF01590, GAF, 1 hit PF05524, PEP-utilisers_N, 1 hit PF00391, PEP-utilizers, 1 hit PF02896, PEP-utilizers_C, 1 hit |
SMARTi | View protein in SMART SM00065, GAF, 1 hit |
SUPFAMi | SSF47831, SSF47831, 1 hit SSF51621, SSF51621, 1 hit SSF52009, SSF52009, 1 hit |
TIGRFAMsi | TIGR01417, PTS_I_fam, 1 hit |
PROSITEi | View protein in PROSITE PS00742, PEP_ENZYMES_2, 1 hit PS00370, PEP_ENZYMES_PHOS_SITE, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | PT1P_ECOLI | |
Accessioni | P37177Primary (citable) accession number: P37177 Secondary accession number(s): Q2MA08 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | October 1, 1994 |
Last sequence update: | November 1, 1995 | |
Last modified: | April 7, 2021 | |
This is version 164 of the entry and version 2 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Prokaryotic Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
3D-structure, Reference proteomeDocuments
- PDB cross-references
Index of Protein Data Bank (PDB) cross-references - SIMILARITY comments
Index of protein domains and families