KpATCC43816 Protein target profile

calcineurin-like phosphoesterase family protein

Accession: VK055_2087

Gene: AIK80692.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GP59
Length 550
Pocket druggability (P2Rank · AlphaFold DB model) 0.957
Direct ligand evidence 0 165 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
Hit
Human identity (%)
29.775 Lower values reduce human off-target concern.
Human E-value
1.49e-12
Gut microbiome similarity
2.7% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
94.48 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) 0.957
Structure A0A0H3GP59
Pocket Pocket 1
Druggability (FPocket) 0.968
Structure A0A0H3GP59
Pocket Pocket 1
ColabFold model
P2Rank 0.957 · Pocket 1
FPocket 0.929 · Pocket 2
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 127 / 4744 genomes with a hit
Prevalence 2.7%

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.

MHYFKHSVALALFAALSLGSLSAQAYEQDKTYKITILHTNDHHGHFWRNDYGEYGLAAQKTLVDGIRKEVAAEGGSVLLLSGGDINTGVPESDLQDAEPDFRGMNLIGYDAMAVGNHEFDNPLSVLRQQEKWAKFPFLSANIYQKSTGERLFKPWALFKRDGLKIAVIGLTTDDTAKIGNPEYFTDIEFRKPAEEAKLVIQELQQNEKPDVILATTHMGHYDNGNHGSNAPGDVEMARSLPAGSLAMIVGGHSQDPVCMAAENKKQVDYVPGTPCAPDRQNGIWIVQAHEWGKYVGRADFEFRNGEMKLVHYQLIPVNLKKKVTYDNGQSERVLYTPQIAENPQMMSLLTPFQNKGKAQLQVKIGSVNGHLEGDRSKVRFVQTNMGHLLLAAQMARSNADFAVMSGGGIRDSIEAGDITYKDVMKVQPFGNVLTYVDMNGKEVVDYLTAVAQMKPDSGAYPQFANVSFVAKDGKLNDLKIKGEPVDPAKTYRMATLSFNATGGDGYPNIADKPGYVNTGFIDAEVLKEYIEKNSPLDAAAYEPKGEVSWQ

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
Periplasmic

Gene Ontology (GO)

5
  • GO:0009166 The chemical reactions and pathways resulting in the breakdown of nucleotides, any nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the glycose moiety; may be mono-, di- or triphosphate; this definition includes cyclic-nucleotides (nucleoside cyclic phosphates).
  • GO:0016788 Catalysis of the hydrolysis of any ester bond.
  • GO:0046872 Binding to a metal ion.
  • GO:0000166 Binding to a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
  • GO:0016787 Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

40 records
Show feature table
Start End DB Term Name
26 362 FunFam G3DSA:3.60.21.10:FF:000025 Protein UshA
363 549 Gene3D G3DSA:3.90.780.10 -
363 549 InterPro IPR036907 5'-Nucleotidase, C-terminal domain superfamily
1 23 Phobius SIGNAL_PEPTIDE Signal peptide region
34 46 ProSitePatterns PS00785 5'-nucleotidase signature 1.
34 46 InterPro IPR006146 5'-Nucleotidase, conserved site
363 549 FunFam G3DSA:3.90.780.10:FF:000003 Protein UshA
24 550 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
34 320 CDD cd07405 MPP_UshA_N
109 120 ProSitePatterns PS00786 5'-nucleotidase signature 2.
109 120 InterPro IPR006146 5'-Nucleotidase, conserved site
1 25 SignalP_EUK SignalP-noTM SignalP-noTM
19 23 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
1 25 SignalP_GRAM_POSITIVE SignalP-TM SignalP-TM
26 362 Gene3D G3DSA:3.60.21.10 -
26 362 InterPro IPR029052 Metallo-dependent phosphatase-like
27 360 SUPERFAMILY SSF56300 Metallo-dependent phosphatases
27 360 InterPro IPR029052 Metallo-dependent phosphatase-like
238 261 PRINTS PR01607 Apyrase family signature
238 261 InterPro IPR006179 5'-Nucleotidase/apyrase
417 440 PRINTS PR01607 Apyrase family signature
417 440 InterPro IPR006179 5'-Nucleotidase/apyrase
207 224 PRINTS PR01607 Apyrase family signature
207 224 InterPro IPR006179 5'-Nucleotidase/apyrase
283 303 PRINTS PR01607 Apyrase family signature
283 303 InterPro IPR006179 5'-Nucleotidase/apyrase
484 503 PRINTS PR01607 Apyrase family signature
484 503 InterPro IPR006179 5'-Nucleotidase/apyrase
32 50 PRINTS PR01607 Apyrase family signature
32 50 InterPro IPR006179 5'-Nucleotidase/apyrase
35 254 Pfam PF00149 Calcineurin-like phosphoesterase
35 254 InterPro IPR004843 Calcineurin-like phosphoesterase domain, ApaH type
363 543 SUPERFAMILY SSF55816 5'-nucleotidase (syn. UDP-sugar hydrolase), C-terminal domain
363 543 InterPro IPR036907 5'-Nucleotidase, C-terminal domain superfamily
364 508 Pfam PF02872 5'-nucleotidase, C-terminal domain
364 508 InterPro IPR008334 5'-Nucleotidase, C-terminal
1 6 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
23 539 PANTHER PTHR11575 5'-NUCLEOTIDASE-RELATED
23 539 InterPro IPR006179 5'-Nucleotidase/apyrase
7 18 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.

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
0.957
Likely same site as FPocket 1 2.3 Å 27 shared residues 96% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.855
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.231
Show in viewer
Surrounding area
Pocket 4 P2Rank #4
0.064
Show in viewer
Surrounding area
Pocket 5 P2Rank #5
0.038
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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 #1
0.968 Unusual size
Likely same site as P2Rank 1 2.3 Å 27 shared residues 96% of smaller site
Show in viewer
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_A0A0H3GP59
AlphaFold DB full sequence Viewing
ColabFold VK055_2087
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.

165 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 115 records from similar proteins
Structural ligands 15 0 loaded crystals
Measured bioactivity 100 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
0XE PDB via homolog 446.4 Da · LogP 0.14 · TPSA 187.1 Open detail RCSB PDB
0YQ PDB via homolog Detail RCSB PDB
A12 PDB via homolog Detail RCSB PDB
ADN PDB via homolog Detail RCSB PDB
MTN PDB via homolog Detail RCSB PDB

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
0XE RCSB PDB P21589 446.4 Da LogP 0.14 TPSA 187.1 1 viol. Alert c1ccc(cc1)C2=CC(=O)c3c(cc(c(c3O)O)O[C@H]4[C@@H]…
0YQ RCSB PDB P21589 473.4 Da LogP -5.14 TPSA 240.6 2 viol. ✓ Clean C1=CN(C(=O)NC1=O)[C@H]2[C@@H]([C@@H]([C@H](O2)C…
A12 RCSB PDB P21589 425.2 Da LogP -1.64 TPSA 223.4 2 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
ADN RCSB PDB P21589 267.2 Da LogP -1.98 TPSA 139.5 ✓ Ro5 ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
MTN RCSB PDB P07024 264.4 Da LogP 1.82 TPSA 57.3 ✓ Ro5 ✓ Clean CC1(C=C(C(N1[O])(C)C)CSS(=O)(=O)C)C
NYW RCSB PDB P21589 440.2 Da LogP -2.05 TPSA 249.4 2 viol. ✓ Clean c1nc2c(nc(nc2n1[C@H]3[C@@H]([C@@H]([C@H](O3)COP…
NYZ RCSB PDB P21589 441.2 Da LogP -2.34 TPSA 243.3 2 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)COP(=O)(C…
O02 RCSB PDB P21589 455.3 Da LogP -2.35 TPSA 261.4 2 viol. ✓ Clean c1nc2c(nc(nc2n1[C@H]3[C@@H]([C@@H]([C@H](O3)COP…
O05 RCSB PDB P21589 510.4 Da LogP -3.25 TPSA 243.2 3 viol. ✓ Clean c1nc2c(nc(nc2n1[C@H]3[C@@H]([C@@H]([C@H](O3)COP…
O1T RCSB PDB P21589 580.8 Da LogP 2.35 TPSA 196.5 2 viol. ✓ Clean C[C@@H](c1ccc(cc1)F)Nc2cc(nc3c2cnn3[C@H]4[C@@H]…
OO2 RCSB PDB P21589 463.8 Da LogP 0.61 TPSA 172.1 ✓ Ro5 ✓ Clean c1nc2c(nc(nc2n1[C@H]3[C@@H]([C@@H]([C@H](O3)COC…
OO5 RCSB PDB P21589 463.8 Da LogP 0.61 TPSA 172.1 ✓ Ro5 ✓ Clean c1c2c(nc(nc2n(n1)[C@H]3[C@@H]([C@@H]([C@H](O3)C…
QCQ RCSB PDB P21589 551.8 Da LogP 2.03 TPSA 189.1 1 viol. ✓ Clean c1ccc(cc1)CNc2c3c(nc(n2)Cl)n(cn3)[C@H]4[C@H]([C…
THM RCSB PDB Q5SIP1 242.2 Da LogP -1.51 TPSA 104.6 ✓ Ro5 ✓ Clean CC1=CN(C(=O)NC1=O)[C@H]2C[C@@H]([C@H](O2)CO)O
WO4 RCSB PDB P07024 247.8 Da LogP -2.62 TPSA 80.3 ✓ Ro5 ✓ Clean [O-][W](=O)(=O)[O-]

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.

Chemistry

ChEMBL CHEMBL5431118 ChEMBL CHEMBL4749428 ChEMBL CHEMBL4776758 ChEMBL CHEMBL4740465 ChEMBL CHEMBL4746184 ChEMBL CHEMBL4797225 ChEMBL CHEMBL4790144 ChEMBL CHEMBL4745002 ChEMBL CHEMBL4784155 ChEMBL CHEMBL5984330 ChEMBL CHEMBL4777161 ChEMBL CHEMBL5929751 ChEMBL CHEMBL4753354 ChEMBL CHEMBL5786397 ChEMBL CHEMBL4758486 ChEMBL CHEMBL4763896 ChEMBL CHEMBL4743437 ChEMBL CHEMBL4744502 ChEMBL CHEMBL5867535 ChEMBL CHEMBL4780231 ChEMBL CHEMBL4788910 ChEMBL CHEMBL5956909 ChEMBL CHEMBL6017169 ChEMBL CHEMBL5624492 ChEMBL KYW ChEMBL CHEMBL4748647 ChEMBL CHEMBL4791237 ChEMBL CHEMBL5818615 ChEMBL CHEMBL5081267 ChEMBL CHEMBL5083600 ChEMBL CHEMBL5403339 ChEMBL CHEMBL5811144 ChEMBL CHEMBL5074970 ChEMBL CHEMBL4743237 ChEMBL CHEMBL4757563 ChEMBL CHEMBL4748576 ChEMBL CHEMBL5415675 ChEMBL CHEMBL5902623 ChEMBL CHEMBL5904355 ChEMBL CHEMBL6011116 ChEMBL CHEMBL5078828 ChEMBL CHEMBL4471306 ChEMBL CHEMBL5080841 ChEMBL CHEMBL4746820 ChEMBL CHEMBL4750588 ChEMBL CHEMBL5563097 ChEMBL CHEMBL4761534 ChEMBL CHEMBL5417110 ChEMBL CHEMBL5874964 ChEMBL CHEMBL5932150 ChEMBL CHEMBL6032196 ChEMBL CHEMBL5086866 ChEMBL CHEMBL4741516 ChEMBL CHEMBL5076916 ChEMBL CHEMBL5915270 ChEMBL CHEMBL5953037 ChEMBL CHEMBL4751244 ChEMBL CHEMBL4788790 ChEMBL CHEMBL5398515 ChEMBL CHEMBL5409033 ChEMBL CHEMBL5419527 ChEMBL CHEMBL5435185 ChEMBL CHEMBL5744820 ChEMBL CHEMBL5749222 ChEMBL CHEMBL5807648 ChEMBL CHEMBL5830846 ChEMBL CHEMBL5841536 ChEMBL CHEMBL5862626 ChEMBL CHEMBL5901745 ChEMBL CHEMBL5913187 ChEMBL CHEMBL5954987 ChEMBL CHEMBL5959508 ChEMBL CHEMBL6040545 ChEMBL CHEMBL6040621 ChEMBL CHEMBL5084248 ChEMBL CHEMBL4755101 ChEMBL CHEMBL5404795 ChEMBL CHEMBL6025425 ChEMBL CHEMBL5081442 ChEMBL CHEMBL5845965 ChEMBL CHEMBL5081604 ChEMBL CHEMBL4759136 ChEMBL CHEMBL4782655 ChEMBL CHEMBL4784951 ChEMBL CHEMBL4793370 ChEMBL CHEMBL4796737 ChEMBL CHEMBL4753731 ChEMBL CHEMBL4763785 ChEMBL CHEMBL5915147 ChEMBL CHEMBL4748342 ChEMBL CHEMBL5079813 ChEMBL CHEMBL5094601 ChEMBL CHEMBL4776829 ChEMBL CHEMBL5423764 ChEMBL CHEMBL6029916 ChEMBL CHEMBL5076275 ChEMBL CHEMBL5089752 ChEMBL CHEMBL5404674 ChEMBL CHEMBL6028872 ChEMBL CHEMBL6054267