Protein profile

KP13_02384

Signal transduction histidine-protein kinase barA

Genome: KpKP13

Gene: barA AHE42955.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GUH1
Amino acids 916
Annotations 9
Features 71
PDB binders 3
Druggability 0.563

Overview

Basic information about this protein and its source genome.

Accession
KP13_02384
Gene
barA AHE42955.1
Status
annotated
Amino acids
916
Structure source
AlphaFold + ColabFold
GO
GO:0016310 The process of introducing a phosphate group into a molecule, usually with the formation of a phosphoric ester, a phosphoric anhydride or a phosphoric amide. GO:0016772 Catalysis of the transfer of a phosphorus-containing group from one compound (donor) to another (acceptor). GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it. GO:0000160 A conserved series of molecular signals found in prokaryotes and eukaryotes; involves autophosphorylation of a histidine kinase and the transfer of the phosphate group to an aspartate that then acts as a phospho-donor to response regulator proteins. GO:0000155 Catalysis of the phosphorylation of a histidine residue in response to detection of an extracellular signal such as a chemical ligand or change in environment, to initiate a change in cell state or activity. The two-component sensor is a histidine kinase that autophosphorylates a histidine residue in its active site. The phosphate is then transferred to an aspartate residue in a downstream response regulator, to trigger a response. GO:0007165 The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.

Target profile

Computed evidence for target prioritization.

Human off-target
No hit
Human identity (%)
0.0
Gut microbiome off-target
hit
Essential (DEG)
N
DEG identity (%)
0.0
Localization
CytoplasmicMembrane
ColabFold pLDDT
81.0

Selected Druggability evidence

AlphaFold / UniProt model

Selected Druggability is the FPocket score chosen for ranking using the curated structure priority. The 3D viewer may show a different loaded structure, so its visible pockets can differ.

FPocket 0.563
Structure A0A0H3GUH1
Pocket Pocket 53
P2Rank 0.876
Structure A0A0H3GUH1
Pocket Pocket 1
ColabFold model
FPocket 0.88 · Pocket 15
P2Rank 0.941 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 101 / 4744 genomes with a hit
Normalized 0.021

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 8 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

8
  • GO:0016310 The process of introducing a phosphate group into a molecule, usually with the formation of a phosphoric ester, a phosphoric anhydride or a phosphoric amide.
  • GO:0016772 Catalysis of the transfer of a phosphorus-containing group from one compound (donor) to another (acceptor).
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0000160 A conserved series of molecular signals found in prokaryotes and eukaryotes; involves autophosphorylation of a histidine kinase and the transfer of the phosphate group to an aspartate that then acts as a phospho-donor to response regulator proteins.
  • GO:0000155 Catalysis of the phosphorylation of a histidine residue in response to detection of an extracellular signal such as a chemical ligand or change in environment, to initiate a change in cell state or activity. The two-component sensor is a histidine kinase that autophosphorylates a histidine residue in its active site. The phosphate is then transferred to an aspartate residue in a downstream response regulator, to trigger a response.
  • GO:0007165 The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.

Sequence Features

Domain/signature hits from InterPro and related databases.

71 records
Show feature table
Start End DB Term Name
667 780 SMART SM00448 REC_2
667 780 InterPro IPR001789 Signal transduction response regulator, receiver domain
409 518 CDD cd16922 HATPase_EvgS-ArcB-TorS-like
404 519 Pfam PF02518 Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase
404 519 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
826 906 Pfam PF01627 Hpt domain
826 906 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
292 357 SMART SM00388 HisKA_10
292 357 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
666 786 SUPERFAMILY SSF52172 CheY-like
666 786 InterPro IPR011006 CheY-like superfamily
10 32 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
356 522 FunFam G3DSA:3.30.565.10:FF:000020 Histidine kinase
200 252 SMART SM00304 HAMP_11
200 252 InterPro IPR003660 HAMP domain
820 887 CDD cd00088 HPT
820 887 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
346 517 SUPERFAMILY SSF55874 ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
346 517 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
200 916 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
237 783 PANTHER PTHR45339 HYBRID SIGNAL TRANSDUCTION HISTIDINE KINASE J
817 912 SMART SM00073 hpt_2
817 912 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
668 784 ProSiteProfiles PS50110 Response regulatory domain profile.
668 784 InterPro IPR001789 Signal transduction response regulator, receiver domain
804 914 Gene3D G3DSA:1.20.120.160 HPT domain
804 914 InterPro IPR036641 HPT domain superfamily
257 355 FunFam G3DSA:1.10.287.130:FF:000003 Histidine kinase
12 31 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
198 247 Pfam PF00672 HAMP domain
198 247 InterPro IPR003660 HAMP domain
820 915 ProSiteProfiles PS50894 Histidine-containing phosphotransfer (HPt) domain profile.
820 915 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
251 289 Coils Coil Coil
1 11 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
356 522 Gene3D G3DSA:3.30.565.10 -
356 522 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
168 256 Gene3D G3DSA:6.10.340.10 -
200 249 SUPERFAMILY SSF158472 HAMP domain-like
257 355 Gene3D G3DSA:1.10.287.130 -
277 358 SUPERFAMILY SSF47384 Homodimeric domain of signal transducing histidine kinase
277 358 InterPro IPR036097 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily
291 353 CDD cd00082 HisKA
291 353 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
203 247 CDD cd06225 HAMP
763 907 SUPERFAMILY SSF47226 Histidine-containing phosphotransfer domain, HPT domain
763 907 InterPro IPR036641 HPT domain superfamily
653 786 Gene3D G3DSA:3.40.50.2300 -
177 199 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
669 779 Pfam PF00072 Response regulator receiver domain
669 779 InterPro IPR001789 Signal transduction response regulator, receiver domain
32 177 Pfam PF09984 Single cache domain 4
32 177 InterPro IPR019247 Histidine kinase BarA, N-terminal
299 520 ProSiteProfiles PS50109 Histidine kinase domain profile.
299 520 InterPro IPR005467 Histidine kinase domain
293 357 Pfam PF00512 His Kinase A (phospho-acceptor) domain
293 357 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
32 176 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
669 780 CDD cd17546 REC_hyHK_CKI1_RcsC-like
404 520 SMART SM00387 HKATPase_4
404 520 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
177 199 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
463 473 PRINTS PR00344 Bacterial sensor protein C-terminal signature
463 473 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
445 459 PRINTS PR00344 Bacterial sensor protein C-terminal signature
445 459 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
480 498 PRINTS PR00344 Bacterial sensor protein C-terminal signature
480 498 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
504 517 PRINTS PR00344 Bacterial sensor protein C-terminal signature
504 517 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
200 252 ProSiteProfiles PS50885 HAMP domain profile.

3D Structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; predicted models typically cover the full protein.

3D visualization script Full viewer

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Structural evidence

0 + 2

Experimental PDB entries and predicted models. Click Switch to display a different structure in the viewer.

Entry Method Resolution Chain Coverage Links Status
AlphaFold AF_A0A0H3GUH1
AlphaFold full sequence Viewing
ColabFold KP13_02384
ColabFold full sequence Loaded
Pocket details FPocket · P2Rank — toggle visibility and zoom from here, or open full viewer

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET Sticks Spheres Surfaces Druggability Labels Zoom Positions
53 0.563
3 0.333
67 0.256

Pockets (P2RANK)

Showing top-ranked P2Rank candidates by probability. Probability is color-coded per P2Rank calibration: high (≥ 0.5), medium (0.2 – 0.49), low (< 0.2).

P2RANK Sticks Spheres Surfaces Score Probability Labels Zoom Positions
1 13.3 0.681
2 5.29 0.248
3 5.25 0.245
4 5.12 0.235
5 3.55 0.131

Ligand evidence

Ligands grouped by evidence source. PDB ligands keep the source crystal visible, and loaded crystals can be opened directly in the structure viewer.

53 records

Structural evidence inferred from similar proteins. The source crystal indicates where the ligand was observed; the UniProt column identifies the homologous protein carrying that ligand.

Show only:
Ligand Source crystal UniProt (homolog) MW · LogP · TPSA Lipinski PAINS SMILES
ANP Q9ABT2 506.2 Da LogP -2.06 TPSA 281.9 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
BEF O22267 66.0 Da LogP 0.88 TPSA 0.0 ✓ Ro5 ✓ Clean [Be-](F)(F)F
BTB P0AEC6 209.2 Da LogP -3.01 TPSA 104.4 ✓ Ro5 ✓ Clean C(CO)N(CCO)C(CO)(CO)CO

PDB and ChEMBL records on this protein are shown in full. ChEMBL records from similar proteins are capped at the top 100 per protein (by pchembl) and ZINC at the top 50 (Tanimoto ≥ 0.5). ADME columns are descriptor-based screening flags, not experimental toxicity results.