Protein profile

PA3044

two-component sensor

Genome: NC_002516.2

Gene: PA3044 Structure source: AlphaFold UniProt Q9HZG4
Amino acids 741
Annotations 8
Features 73
PDB binders 5
Druggability 0.844

Overview

Basic information about this protein and its source genome.

Accession
PA3044
Gene
PA3044
Status
annotated
Amino acids
741
Structure source
AlphaFold
GO
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:0009927 Serves as a phospho-His intermediate enabling the transfer of phospho group between a hybrid kinase and a response regulator. 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: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: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:0016772 Catalysis of the transfer of a phosphorus-containing group from one compound (donor) to another (acceptor).

Target profile

Computed evidence for target prioritization.

Human off-target
No hit
Gut microbiome off-target
hit
Essential (DEG)
N
Localization
CytoplasmicMembrane

Selected Druggability evidence

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 0.844
Structure
Pocket

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 7 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

7
  • 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:0009927 Serves as a phospho-His intermediate enabling the transfer of phospho group between a hybrid kinase and a response regulator.
  • 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: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: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:0016772 Catalysis of the transfer of a phosphorus-containing group from one compound (donor) to another (acceptor).
  • 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.

Sequence Features

Domain/signature hits from InterPro and related databases.

73 records
Show feature table
Start End DB Term Name
1 7 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
625 736 SUPERFAMILY SSF47226 Histidine-containing phosphotransfer domain, HPT domain
625 736 InterPro IPR036641 HPT domain superfamily
7 29 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
486 618 Gene3D G3DSA:3.40.50.2300 -
247 313 SMART SM00388 HisKA_10
247 313 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
303 471 SUPERFAMILY SSF55874 ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
303 471 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
314 476 Gene3D G3DSA:3.30.565.10 -
314 476 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
658 733 CDD cd00088 HPT
658 733 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
20 31 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
224 247 Coils Coil Coil
254 475 ProSiteProfiles PS50109 Histidine kinase domain profile.
254 475 InterPro IPR005467 Histidine kinase domain
1 21 SignalP_GRAM_NEGATIVE SignalP-noTM SignalP-noTM
94 741 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
125 236 Gene3D G3DSA:3.30.450.20 PAS domain
1 24 SignalP_EUK SignalP-noTM SignalP-noTM
72 93 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
248 313 Pfam PF00512 His Kinase A (phospho-acceptor) domain
248 313 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
500 614 Pfam PF00072 Response regulator receiver domain
500 614 InterPro IPR001789 Signal transduction response regulator, receiver domain
71 93 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
119 229 Pfam PF08448 PAS fold
119 229 InterPro IPR013656 PAS fold-4
647 730 Pfam PF01627 Hpt domain
647 730 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
8 19 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
95 616 PANTHER PTHR43047 TWO-COMPONENT HISTIDINE PROTEIN KINASE
184 236 ProSiteProfiles PS50113 PAC domain profile.
184 236 InterPro IPR000700 PAS-associated, C-terminal
636 736 SMART SM00073 hpt_2
636 736 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
361 473 Pfam PF02518 Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase
361 473 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
1 19 ProSiteProfiles PS51257 Prokaryotic membrane lipoprotein lipid attachment site profile.
312 476 FunFam G3DSA:3.30.565.10:FF:000010 Sensor histidine kinase RcsC
459 472 PRINTS PR00344 Bacterial sensor protein C-terminal signature
459 472 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
401 415 PRINTS PR00344 Bacterial sensor protein C-terminal signature
401 415 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
435 453 PRINTS PR00344 Bacterial sensor protein C-terminal signature
435 453 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
419 429 PRINTS PR00344 Bacterial sensor protein C-terminal signature
419 429 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
360 475 SMART SM00387 HKATPase_4
360 475 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
500 614 CDD cd17546 REC_hyHK_CKI1_RcsC-like
1 31 Phobius SIGNAL_PEPTIDE Signal peptide region
628 740 Gene3D G3DSA:1.20.120.160 HPT domain
628 740 InterPro IPR036641 HPT domain superfamily
641 739 ProSiteProfiles PS50894 Histidine-containing phosphotransfer (HPt) domain profile.
641 739 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
365 473 CDD cd16922 HATPase_EvgS-ArcB-TorS-like
497 658 SUPERFAMILY SSF52172 CheY-like
497 658 InterPro IPR011006 CheY-like superfamily
245 309 CDD cd00082 HisKA
245 309 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
237 313 Gene3D G3DSA:1.10.287.130 -
499 618 ProSiteProfiles PS50110 Response regulatory domain profile.
499 618 InterPro IPR001789 Signal transduction response regulator, receiver domain
498 614 SMART SM00448 REC_2
498 614 InterPro IPR001789 Signal transduction response regulator, receiver domain
230 314 SUPERFAMILY SSF47384 Homodimeric domain of signal transducing histidine kinase
230 314 InterPro IPR036097 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily
1 29 SignalP_GRAM_POSITIVE SignalP-TM SignalP-TM
32 71 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
99 225 SUPERFAMILY SSF55785 PYP-like sensor domain (PAS domain)
99 225 InterPro IPR035965 PAS domain superfamily

3D Structure

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

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Structural evidence

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

Entry Method Resolution Chain Coverage Links Status
AlphaFold PA3044
AlphaFold full sequence Viewing
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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
1 0.844
6 0.755

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.

55 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
MBN A5W4E3 92.1 Da LogP 2.00 TPSA 0.0 ✓ Ro5 ✓ Clean Cc1ccccc1
XBZ A5W4E3 120.2 Da LogP 2.61 TPSA 0.0 ✓ Ro5 ✓ Clean Cc1ccc(c(c1)C)C

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.