Protein target profile

KP13_04229

Aquaporin Z

Genome: KpKP13 Gene: AHE45460.1 aqpZ 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GUX7
Length 241
Pocket druggability 0.945
Direct ligand evidence 0 63 total records
Functional annotation 0 EC 6 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.

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
Hit
Human identity (%)
41.935 Lower values reduce human off-target concern.
Human E-value
9.32e-07
Gut microbiome similarity
3.3% 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.

Localization

Localization
CytoplasmicMembrane

Structure confidence

ColabFold pLDDT
97.52 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket 0.945
Structure A0A0H3GUX7
Pocket Pocket 1
P2Rank 0.403
Structure A0A0H3GUX7
Pocket Pocket 1
ColabFold model
FPocket 0.566 · Pocket 2
P2Rank 0.318 · Pocket 1
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 155 / 4744 genomes with a hit
Prevalence 3.3%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MRVNNLIEVVMFRKLAAECFGTFWLVFGGCGSAVLAAAFPELGIGFAGVALAFGLTVLTMAFAVGHISGGHFNPAVTLGLWAGGRFPAKEVIGYIIAQVVGGIIAAAVLYVVASGKAGFDAAASGFASNGYGEHSPGGFSMLSAIVIEIVLTCGFLLVIHGATDKHAPAGFAPIAIGLALTLIHLISIPVTNTSVNPARSTAVAIFQGGWALQQLWLFWVMPIVGGILGGVLYRTLLEKRD

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

Gene Ontology (GO)

6
  • GO:0015267 Enables the energy-independent facilitated diffusion of a solute through a transmembrane aqueous pore or channel. Stereospecificity is not exhibited but this transport may be specific for a particular molecular species or class of molecules.
  • GO:0006833 The directed movement of water (H2O) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
  • GO:0015250 Enables the energy-independent facilitated diffusion of water through a transmembrane aqueous pore or channel.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

49 records
Show feature table
Start End DB Term Name
12 238 SUPERFAMILY SSF81338 Aquaporin-like
12 238 InterPro IPR023271 Aquaporin-like
1 19 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
13 236 CDD cd00333 MIP
13 236 InterPro IPR000425 Major intrinsic protein
160 170 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
177 199 PRINTS PR00783 Major intrinsic protein family signature
177 199 InterPro IPR000425 Major intrinsic protein
147 165 PRINTS PR00783 Major intrinsic protein family signature
147 165 InterPro IPR000425 Major intrinsic protein
13 32 PRINTS PR00783 Major intrinsic protein family signature
13 32 InterPro IPR000425 Major intrinsic protein
90 109 PRINTS PR00783 Major intrinsic protein family signature
90 109 InterPro IPR000425 Major intrinsic protein
216 236 PRINTS PR00783 Major intrinsic protein family signature
216 236 InterPro IPR000425 Major intrinsic protein
53 77 PRINTS PR00783 Major intrinsic protein family signature
53 77 InterPro IPR000425 Major intrinsic protein
12 240 Hamap MF_01146 Aquaporin Z [aqpZ].
12 240 InterPro IPR023743 Aquaporin Z
91 113 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
44 64 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
139 159 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
114 138 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
17 233 NCBIfam TIGR00861 MIP family channel protein
17 233 InterPro IPR000425 Major intrinsic protein
20 38 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
237 241 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
9 241 Gene3D G3DSA:1.20.1080.10 Glycerol uptake facilitator protein.
9 241 InterPro IPR023271 Aquaporin-like
39 43 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
215 237 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
191 215 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
65 90 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
166 188 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
171 190 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
11 239 PANTHER PTHR19139 AQUAPORIN TRANSPORTER
11 239 InterPro IPR034294 Aquaporin transporter
137 159 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 30 ProSiteProfiles PS51257 Prokaryotic membrane lipoprotein lipid attachment site profile.
11 241 FunFam G3DSA:1.20.1080.10:FF:000007 Aquaporin Z
43 65 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
71 79 ProSitePatterns PS00221 MIP family signature.
71 79 InterPro IPR022357 Major intrinsic protein, conserved site
216 236 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
91 113 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
9 233 Pfam PF00230 Major intrinsic protein
9 233 InterPro IPR000425 Major intrinsic protein
20 39 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.

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 · FPocket

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

Site 1 FPocket #1
0.945
Likely same site as P2Rank 1 5.1 Å 10 shared residues 56% of smaller site
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Surrounding area
Site 2 FPocket #5
0.757
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Surrounding area
Site 3 FPocket #7
0.35
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Surrounding area

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.403
Likely same site as FPocket 1 5.1 Å 10 shared residues 56% of smaller site
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Surrounding area
Site 2 P2Rank #2
0.362
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Surrounding area
Site 3 P2Rank #3
0.035
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Surrounding area
Site 4 P2Rank #4
0.012
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Surrounding area
Residue sets
UniProt: Site:174-174 Selectivity filter
UniProt: Site:183-183 Selectivity filter
UniProt: Site:189-189 Selectivity filter
UniProt: Site:20-20 Involved in tetramerization or stability of the tetramer
UniProt: Site:43-43 Selectivity filter
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_A0A0H3GUX7
AlphaFold DB full sequence Viewing
ColabFold KP13_04229
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.

63 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 13 records from similar proteins
Structural ligands 2 0 loaded crystals
Measured bioactivity 11 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
3PE PDB via homolog 748.1 Da · LogP 12.06 · TPSA 134.4 Open detail RCSB PDB
PS6 PDB via homolog Detail RCSB PDB
AZM ChEMBL via homolog Detail ChEMBL
CHEMBL121 ChEMBL via homolog Detail ChEMBL
CHEMBL128 ChEMBL via homolog Detail ChEMBL

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
3PE RCSB PDB Q6J8I9 748.1 Da LogP 12.06 TPSA 134.4 2 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN)OC…
PS6 RCSB PDB P55064 567.7 Da LogP 5.27 TPSA 171.7 2 viol. ✓ Clean CCCCCCCCCCCCCC(=O)OC[C@@H](CO[P@@](=O)(O)OC[C@H…

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.