KpKP13 Protein target profile

Inner membrane protein

Accession: KP13_03187

Gene: AHE43600.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3H0R5
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Length 567
Pocket druggability (P2Rank · AlphaFold DB model) 0.349
Functional annotation 1 EC 8 GO
Target summary

Target candidate with partial support; inspect missing evidence before prioritizing.

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

Main supporting evidence

No similar human protein detected The current BLAST sequence screen did not find a significant human match, lowering apparent off-target risk. Core gene across strains Marked as conserved by both pan-genome tools: Roary and CoreCruncher. Moderate predicted binding pocket FPocket selected-pocket score 0.61. This supports review but is not experimental validation. Structure available AlphaFold DB model + ColabFold model

Risks to review

Microbiome similarity 114 of 4744 screened genomes (2.4%) have a significant similarity hit. This target also has a predicted binding pocket (P2Rank 0.35) — check the ligand evidence before deprioritizing on off-target risk alone. Weak second pocket-predictor signal P2Rank predicted binding-site probability 0.35.

Evidence gaps

No metabolic context No SBML/network-derived reaction evidence is loaded for this protein. No ligand evidence No experimental PDB ligands, measured ChEMBL bioactivity, or proposed ZINC compound records are available.
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
2.4% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
88.15 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) 0.349
Structure A0A0H3H0R5
Pocket Pocket 1
Druggability (FPocket) 0.614
Structure A0A0H3H0R5
Pocket Pocket 12
ColabFold model
P2Rank 0.332 · Pocket 1
FPocket 0.65 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 114 / 4744 genomes with a hit
Prevalence 2.4%

Sequence

Primary amino-acid sequence viewer.

MWFAGMYEFDLVLLLLQQMCVFLVIAWLMSKTRLFIPLMQVTVRLPHKLLCYVTFSIFCIMGTYFGLHIEDSIANTRAIGAVMGGLLGGPVVGGLVGLTGGLHRYSLGGMTALSCMVSTIVEGLLGGLVHSVLVKRGRPDKVFSPLTAGAITFVAELVQMMIILLIARPFQDALHLVQSIAAPMMVTNTVGAALFMRILLDKRAMFEKYTSAFSATALKVAASTEGILRQGFNEENSMKVAQVLIQELDIGAVAITDRDKLLAFTGIGDDHHLPGKPISSSYTQRAIETGEVVYADGNEVPYRCSIHPHCKLGSTLVIPLRGENQRVIGTIKLYEAKNRLFSSINRTLGEGIAQLLSAQILAGQYERQKALLTQSEIKLLHAQVNPHFLFNALNTLKAVIRRDSDQAGQLVQYLSTFFRKNLKRPTEIVTLADEIEHVNAYLQIEKARFQANLQIQMAVPEGLAHHQLPAFTLQPIVENAIKHGTSQHLGVGEITIRASQDDRWLQLDIEDNAGLYRANPQASGLGMNLVDRRLRARFGADCGISVTCEPERFTRVTLRLPLEENAC

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 8 GO

Subcellular localization

Localization
CytoplasmicMembrane

Enzyme Commission (EC)

1

Gene Ontology (GO)

8
  • GO:0004673 Catalysis of the reaction: ATP + protein L-histidine = ADP + protein phospho-L-histidine.
  • GO:0071555 A process that results in the assembly, arrangement of constituent parts, or disassembly of the cell wall, the rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal and most prokaryotic cells, maintaining their shape and protecting them from osmotic lysis.
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0005515 Binding to a protein.
  • 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: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 domains and features

Domain and signature matches imported from InterPro and related databases.

36 records
Show feature table
Start End DB Term Name
179 200 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
79 98 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
49 68 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
376 451 Pfam PF06580 Histidine kinase
376 451 InterPro IPR010559 Signal transduction histidine kinase, internal region
429 562 SUPERFAMILY SSF55874 ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
429 562 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
173 195 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
77 564 PANTHER PTHR34220 SENSOR HISTIDINE KINASE YPDA
223 370 SMART SM00065 gaf_1
223 370 InterPro IPR003018 GAF domain
135 145 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
15 37 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
235 361 Gene3D G3DSA:3.30.450.40 -
235 361 InterPro IPR029016 GAF-like domain superfamily
428 562 Gene3D G3DSA:3.30.565.10 -
428 562 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
201 567 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
236 361 FunFam G3DSA:3.30.450.40:FF:000013 Sensor histidine kinase YehU
12 29 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
68 78 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
246 357 Pfam PF13185 GAF domain
246 357 InterPro IPR003018 GAF domain
33 200 Pfam PF07694 5TMR of 5TMR-LYT
33 200 InterPro IPR011620 Signal transduction histidine kinase, 5TM receptor LytS, transmembrane region
146 167 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
49 67 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
110 134 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 11 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
99 109 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
78 100 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
248 364 SUPERFAMILY SSF55781 GAF domain-like
168 178 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
144 166 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
107 129 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
30 48 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.

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
0.349
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Surrounding area
Pocket 2 P2Rank #2
0.331
Likely same site as FPocket 6 1.2 Å 14 shared residues 100% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.122
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Surrounding area
Pocket 4 P2Rank #4
0.019
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Surrounding area
Pocket 5 P2Rank #5
0.002
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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 #12
0.614
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Surrounding area
Pocket 2 FPocket #6
0.311
Likely same site as P2Rank 2 1.2 Å 14 shared residues 100% of smaller site
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Surrounding area
Pocket 3 FPocket #4
0.246
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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_A0A0H3H0R5
AlphaFold DB — — full sequence — Viewing
ColabFold KP13_03187
ColabFold — — full sequence — Loaded

Cross-references

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

Sequence

UniProt A0A0H3H0R5