KpATCC43816 Protein target profile

evgS-Phis

Accession: VK055_3989

Gene: AIK82537.1 evgS 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3H398
Length 1080
Pocket druggability (P2Rank · AlphaFold DB model) 0.904
Direct ligand evidence 0 54 total records
Functional annotation 0 EC 5 GO
Target summary

Promising target candidate with multiple supporting evidence streams.

Automated synthesis of the evidence currently loaded. Review the underlying records before prioritizing this protein.

Terms and data sources used on this page

PDB: experimentally determined structures from the Protein Data Bank. These are the strongest structural evidence, but may cover only part of the protein.

AlphaFold DB model: a precomputed predicted structure downloaded from AlphaFold Database/UniProt, not an experiment performed here.

ColabFold model: a predicted structure generated for this workspace; interpret it with coverage and confidence.

pLDDT: confidence score for predicted structures. High values support local geometry; low values mean the region should not drive pocket interpretation.

FPocket / P2Rank: software tools that predict possible ligand-binding pockets on a 3D structure. They are useful screening signals, not experimental validation.

Druggability: a pocket-based estimate of whether a small molecule could bind productively. It does not mean a drug already exists.

PDB ligand: a compound observed in an experimental structure. Direct same-protein records are stronger than homolog-transferred records.

ChEMBL: a public database of measured compound bioactivity. Direct entries are stronger than entries transferred from similar proteins.

ZINC: a purchasable-compound database. Here it marks proposed candidates from chemical similarity, not measured binders.

LigQ / LigQ_2: an internal Target pipeline step that gathers PDB, ChEMBL, and ZINC ligand evidence for each protein.

Off-target: sequence similarity to proteins we prefer not to hit, such as human proteins or beneficial gut microbiome proteins.

DEG: Database of Essential Genes. A match suggests the protein resembles genes known to be essential in other organisms.

Roary / CoreCruncher: pan-genome tools used to decide whether a gene is core across analyzed strains or accessory/strain-specific.

EC / GO: functional annotations: EC describes enzyme reactions; GO describes biological process, molecular function, or cellular component.

KEGG pathway: a curated metabolic route label used here to group reactions imported from the metabolic model.

Chokepoint: a metabolic reaction that is the only producer or consumer of a metabolite in the imported model.

Prioritization evidence

Selectivity, essentiality, structural confidence, conservation, and predicted binding-site evidence.

Off-target risk

Human off-target
No hit
Gut microbiome similarity
0.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
N
DEG identity (%)
47.628 Higher values support similarity to known essential genes.

Structure confidence

ColabFold pLDDT
80.48 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

P2Rank's binding-site probability is the primary druggability signal shown across the app; FPocket's druggability score is shown alongside it for comparison. Both estimate small-molecule pocket quality after applying the curated structure priority — neither is experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

Druggability (P2Rank) 0.904
Structure A0A0H3H398
Pocket Pocket 1
Druggability (FPocket) 0.946
Structure A0A0H3H398
Pocket Pocket 3
ColabFold model
P2Rank 0.933 · Pocket 1
FPocket 0.889 · Pocket 8
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 9 / 4744 genomes with a hit
Prevalence 0.2%

Metabolic context

Reactions catalyzed, pathway membership, and centrality in the genome-scale metabolic network.

This protein is not associated with the imported metabolic network for this genome.

Browse the genome's metabolic network

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MAVRLILSVVVGLALSLSPAAYAMKQLELKSHSHIAAIDIPLSGKEKAWLAAQPTLTVGTWLPERTPIVYDGDEKSYQGINADYLALMAHSLGLKVIIRQYDTEQQALTALADRQVDTLLTQVAHRDALAPGLDQSAPLLKTWPTLVTSLKSPLPPLTTDRRVTLACTRDCAFFDIIQQAFPNAKITLYDSDYQALASVVSGENQYFIGNNITTGHCISKYFSQSLVIAHYFRQQEQHNRFVTRDDRPELHQLLDRFIHAVDSDTAMRIMQNWLNRGDLSFLNTPLTFSPEEQRWLQKHRRVRLLVNPYFPPFTLVDNEDELRGIMADMLNIVSLQTGLQFDPILVRNRQALAKRMEKEDWAIMPAATLIPQPQAYVTLSDPLINVAFVLVARGSAPDQHLLTRSARIALPVGPIAAHDLKSRFPLINWVETDNVGVAMKMVEEGEVDAAVASELSARYMIDHYYPQGLHYTRIDGLPVAAIRLAIPRDEPVLAAILNKALQVIPPRDILQMTEKWSKISSQQIENWSQYSRQFYQLIAFALVLIAISLGWGLSLCREVRKRKDSQQRLEEELAQKEALSCALEREKDKAIQATKAKSRFLASMSHELRTPVSAIVGFLELLAKPELNVGQRKEAIELAGSTAQTLLGLIGNILDIDKIESGKYQVTPQWSDVAQLVSQQCHTFDALAQQKGIDLHYHNALQEGTMLWVDPQALRQILNNLIGNALKFTVEGAIQVSCRLTPANETQGELALMVSDSGCGISEAEQATLFHRYAQARQGRQQTGSGLGLVICKELVALMQGRLEMVSRPGVGTTFTITLPVKASRCAIHAPQASPARPQALPGLAILIADDHPTNRLLLKRQLSTIGYSVDEACDGEEAENKLASKHYDLLITDLNMPKKDGLALAASLRRRYPGLVIWGVTASALPQSREACLASGMNMCLFKPVSVQTLSHELSRLAVGRASPHATRHLKLSVLSENTGGDQALMNEMLETFRDASAADLQAAGQAIARHEPQIFLRALHRLHGSAQILGITALQQLCAPFEAKRPDSLTPASCLEVVQRITGVMREIDGEIDALIGR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

5
  • GO:0016772 Catalysis of the transfer of a phosphorus-containing group from one compound (donor) to another (acceptor).
  • 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.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

76 records
Show feature table
Start End DB Term Name
534 556 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
596 662 SMART SM00388 HisKA_10
596 662 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
971 1074 Gene3D G3DSA:1.20.120.160 HPT domain
971 1074 InterPro IPR036641 HPT domain superfamily
254 960 PANTHER PTHR43047 TWO-COMPONENT HISTIDINE PROTEIN KINASE
291 516 Gene3D G3DSA:3.40.190.10 -
938 1046 SUPERFAMILY SSF47226 Histidine-containing phosphotransfer domain, HPT domain
938 1046 InterPro IPR036641 HPT domain superfamily
661 826 Gene3D G3DSA:3.30.565.10 -
661 826 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
302 518 SUPERFAMILY SSF53850 Periplasmic binding protein-like II
557 1080 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
843 959 SUPERFAMILY SSF52172 CheY-like
843 959 InterPro IPR011006 CheY-like superfamily
661 825 FunFam G3DSA:3.30.565.10:FF:000010 Sensor histidine kinase RcsC
16 23 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
24 533 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
1 4 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
558 660 Gene3D G3DSA:1.10.287.130 -
56 275 Pfam PF00497 Bacterial extracellular solute-binding proteins, family 3
56 275 InterPro IPR001638 Solute-binding protein family 3/N-terminal domain of MltF
603 823 ProSiteProfiles PS50109 Histidine kinase domain profile.
603 823 InterPro IPR005467 Histidine kinase domain
652 821 SUPERFAMILY SSF55874 ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
652 821 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
846 955 CDD cd17546 REC_hyHK_CKI1_RcsC-like
1 23 SignalP_GRAM_POSITIVE SignalP-TM SignalP-TM
5 24 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 23 SignalP_EUK SignalP-noTM SignalP-noTM
844 955 SMART SM00448 REC_2
844 955 InterPro IPR001789 Signal transduction response regulator, receiver domain
5 15 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
1 23 Phobius SIGNAL_PEPTIDE Signal peptide region
987 1044 CDD cd00088 HPT
987 1044 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
846 953 Pfam PF00072 Response regulator receiver domain
846 953 InterPro IPR001789 Signal transduction response regulator, receiver domain
750 764 PRINTS PR00344 Bacterial sensor protein C-terminal signature
750 764 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
783 801 PRINTS PR00344 Bacterial sensor protein C-terminal signature
783 801 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
807 820 PRINTS PR00344 Bacterial sensor protein C-terminal signature
807 820 InterPro IPR004358 Signal transduction histidine kinase-related protein, C-terminal
989 1058 Pfam PF01627 Hpt domain
989 1058 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
386 479 Gene3D G3DSA:3.40.190.10 -
142 236 Gene3D G3DSA:3.40.190.10 -
596 662 Pfam PF00512 His Kinase A (phospho-acceptor) domain
299 517 CDD cd13707 PBP2_BvgS_D2
580 663 SUPERFAMILY SSF47384 Homodimeric domain of signal transducing histidine kinase
580 663 InterPro IPR036097 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily
709 823 SMART SM00387 HKATPase_4
709 823 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
48 275 SUPERFAMILY SSF53850 Periplasmic binding protein-like II
303 516 Pfam PF00497 Bacterial extracellular solute-binding proteins, family 3
303 516 InterPro IPR001638 Solute-binding protein family 3/N-terminal domain of MltF
595 656 CDD cd00082 HisKA
595 656 InterPro IPR003661 Signal transduction histidine kinase, dimerisation/phosphoacceptor domain
55 277 SMART SM00062 AABind_6
55 277 InterPro IPR001638 Solute-binding protein family 3/N-terminal domain of MltF
301 520 SMART SM00062 AABind_6
301 520 InterPro IPR001638 Solute-binding protein family 3/N-terminal domain of MltF
53 273 CDD cd13705 PBP2_BvgS_D1
559 589 Coils Coil Coil
979 1078 SMART SM00073 hpt_2
979 1078 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
710 821 Pfam PF02518 Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase
710 821 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
983 1077 ProSiteProfiles PS50894 Histidine-containing phosphotransfer (HPt) domain profile.
983 1077 InterPro IPR008207 Signal transduction histidine kinase, phosphotransfer (Hpt) domain
714 821 CDD cd16922 HATPase_EvgS-ArcB-TorS-like
845 959 ProSiteProfiles PS50110 Response regulatory domain profile.
845 959 InterPro IPR001789 Signal transduction response regulator, receiver domain
45 273 Gene3D G3DSA:3.40.190.10 -
835 962 Gene3D G3DSA:3.40.50.2300 -

3D structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; AlphaFold DB and ColabFold models typically cover the full protein but remain computational predictions.

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Pocket score High Medium Low
How colors and pocket overlays are used
Uniform protein color marks the displayed model as a single molecular object.
Experimental PDB structures may be colored by chain to distinguish subunits or copies present in the file.
Pocket colors and alpha spheres are evidence overlays for predicted binding cavities; they are not alternative protein chains.
'Alpha spheres' is FPocket's own cavity-shape geometry, imported when available and aligned with the loaded structure.
'Pocket atoms'/'Predicted site atoms' show the pocket's residue atoms instead: P2Rank reports residues rather than alpha spheres, and FPocket falls back to this when alpha-sphere geometry is unavailable or doesn't align.
'No pocket geometry' means neither alpha spheres nor residue-position data could be found for that pocket; the layer just highlights the same residues as 'Nearby residues'.
Pocket details Inspect a specific pocket, or open the full viewer

Binding pockets · P2Rank

Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Pocket 1 P2Rank #1
0.904
Likely same site as FPocket 3 2.4 Å 24 shared residues 92% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.395
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Surrounding area
Pocket 3 P2Rank #3
0.381
Likely same site as FPocket 1 0.9 Å 17 shared residues 100% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.329
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Surrounding area
Pocket 5 P2Rank #5
0.321
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Surrounding area

Binding pockets · FPocket

Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4

Pocket 1 FPocket #3
0.946
Likely same site as P2Rank 1 2.4 Å 24 shared residues 92% of smaller site
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Surrounding area
Pocket 2 FPocket #1
0.829
Likely same site as P2Rank 3 0.9 Å 17 shared residues 100% of smaller site
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Surrounding area
All structural evidence 0 experimental · 2 predicted

Structural evidence

0 + 2

Experimental PDB entries plus predicted AlphaFold DB or ColabFold models. Click Switch to display a different loaded structure in the viewer.

Entry Method Resolution Chain Coverage Links Status
AlphaFold DB AF_A0A0H3H398
AlphaFold DB full sequence Viewing
ColabFold VK055_3989
ColabFold full sequence Loaded

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
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 4 records from similar proteins
Structural ligands 4 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
ANP PDB via homolog 506.2 Da · LogP -2.06 · TPSA 281.9 Open detail RCSB PDB
BEF PDB via homolog Detail RCSB PDB
BTB PDB via homolog Detail RCSB PDB
PG0 PDB via homolog Detail RCSB PDB
ZINC1580161 ZINC proposed compound · Tanimoto 1.000 Detail ZINC

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 RCSB PDB 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 RCSB PDB O22267 66.0 Da LogP 0.88 TPSA 0.0 ✓ Ro5 ✓ Clean [Be-](F)(F)F
BTB RCSB PDB P0AEC6 209.2 Da LogP -3.01 TPSA 104.4 ✓ Ro5 ✓ Clean C(CO)N(CCO)C(CO)(CO)CO
PG0 RCSB PDB 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.

Cross-references

External database identifiers for this protein, its structures, ligands, and metabolic reactions.