Protein profile

VK055_1123

response regulator

Genome: KpATCC43816

Gene: AIK79746.1 Structure source: AlphaFold + ColabFold UniProt A0A485FNM7
Amino acids 897
Annotations 9
Features 69
PDB binders 4
Druggability 0.75

Overview

Basic information about this protein and its source genome.

Accession
VK055_1123
Gene
AIK79746.1
Status
annotated
Amino acids
897
Structure source
AlphaFold + ColabFold
GO
GO:0016772 Catalysis of the transfer of a phosphorus-containing group from one compound (donor) to another (acceptor). GO:0005515 Binding to a protein. 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: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: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.

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 (%)
39.544
Localization
CytoplasmicMembrane
ColabFold pLDDT
81.62

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 0.75
Structure A0A485FNM7
Pocket Pocket 1
P2Rank 0.92
Structure A0A485FNM7
Pocket Pocket 1
ColabFold model
FPocket 0.932 · Pocket 5
P2Rank 0.942 · Pocket 1
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 19 / 4744 genomes with a hit
Normalized 0.004

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:0016772 Catalysis of the transfer of a phosphorus-containing group from one compound (donor) to another (acceptor).
  • GO:0005515 Binding to a protein.
  • 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: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: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: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.

69 records
Show feature table
Start End DB Term Name
796 889 ProSiteProfiles PS50894 Histidine-containing phosphotransfer (HPt) domain profile.
796 889 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
384 490 CDD cd16922 HATPase_EvgS-ArcB-TorS-like
802 877 Pfam PF01627 Hpt domain
802 877 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
508 643 Gene3D G3DSA:3.40.50.2300 -
644 772 Gene3D G3DSA:3.40.50.2300 -
651 770 ProSiteProfiles PS50110 Response regulatory domain profile.
651 770 InterPro IPR001789 Signal transduction response regulator, receiver domain
648 769 SUPERFAMILY SSF52172 CheY-like
648 769 InterPro IPR011006 CheY-like superfamily
274 492 ProSiteProfiles PS50109 Histidine kinase domain profile.
274 492 InterPro IPR005467 Histidine kinase domain
379 492 SMART SM00387 HKATPase_4
379 492 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
9 120 Pfam PF12860 PAS fold
267 332 SMART SM00388 HisKA_10
267 332 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
145 244 CDD cd00130 PAS
145 244 InterPro IPR000014 PAS domain
800 887 CDD cd00088 HPT
800 887 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
255 333 Gene3D G3DSA:1.10.287.130 -
652 766 CDD cd17546 REC_hyHK_CKI1_RcsC-like
476 489 PRINTS PR00344 Bacterial sensor protein C-terminal signature
476 489 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
435 445 PRINTS PR00344 Bacterial sensor protein C-terminal signature
435 445 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
452 470 PRINTS PR00344 Bacterial sensor protein C-terminal signature
452 470 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
417 431 PRINTS PR00344 Bacterial sensor protein C-terminal signature
417 431 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
265 328 CDD cd00082 HisKA
265 328 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
334 493 Gene3D G3DSA:3.30.565.10 -
334 493 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
510 627 ProSiteProfiles PS50110 Response regulatory domain profile.
510 627 InterPro IPR001789 Signal transduction response regulator, receiver domain
331 493 FunFam G3DSA:3.30.565.10:FF:000078 Two-component sensor histidine kinase
380 491 Pfam PF02518 Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase
380 491 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
505 626 SUPERFAMILY SSF52172 CheY-like
505 626 InterPro IPR011006 CheY-like superfamily
254 333 FunFam G3DSA:1.10.287.130:FF:000002 Two-component osmosensing histidine kinase
783 888 Gene3D G3DSA:1.20.120.160 HPT domain
783 888 InterPro IPR036641 HPT domain superfamily
509 623 SMART SM00448 REC_2
509 623 InterPro IPR001789 Signal transduction response regulator, receiver domain
650 766 SMART SM00448 REC_2
650 766 InterPro IPR001789 Signal transduction response regulator, receiver domain
152 240 Pfam PF08447 PAS fold
152 240 InterPro IPR013655 PAS fold-3
139 251 Gene3D G3DSA:3.30.450.20 PAS domain
255 334 SUPERFAMILY SSF47384 Homodimeric domain of signal transducing histidine kinase
255 334 InterPro IPR036097 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily
652 766 Pfam PF00072 Response regulator receiver domain
652 766 InterPro IPR001789 Signal transduction response regulator, receiver domain
511 623 Pfam PF00072 Response regulator receiver domain
511 623 InterPro IPR001789 Signal transduction response regulator, receiver domain
749 876 SUPERFAMILY SSF47226 Histidine-containing phosphotransfer domain, HPT domain
749 876 InterPro IPR036641 HPT domain superfamily
204 247 SMART SM00086 pac_2
204 247 InterPro IPR001610 PAC motif
321 490 SUPERFAMILY SSF55874 ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
321 490 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
220 774 PANTHER PTHR45339 HYBRID SIGNAL TRANSDUCTION HISTIDINE KINASE J
267 332 Pfam PF00512 His Kinase A (phospho-acceptor) domain
136 250 SUPERFAMILY SSF55785 PYP-like sensor domain (PAS domain)
136 250 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.

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_A0A485FNM7
AlphaFold full sequence Viewing
ColabFold VK055_1123
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
1 0.75
39 0.745
65 0.394
56 0.252

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 22.57 0.882
2 13.53 0.69
3 6.62 0.335
4 2.82 0.088
5 1.26 0.012

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.

54 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
PG0 P71815 120.1 Da LogP -0.36 TPSA 38.7 ✓ Ro5 ✓ Clean COCCOCCO

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.