KpATCC43816 Protein target profile

acetyltransferase family protein

Accession: VK055_4594

Gene: AIK83128.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GWA4
Length 883
Pocket druggability (P2Rank · AlphaFold DB model) 0.686
Direct ligand evidence 0 52 total records
Functional annotation 0 EC 2 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
2.6% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
89.85 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) 0.686
Structure A0A0H3GWA4
Pocket Pocket 1
Druggability (FPocket) 0.432
Structure A0A0H3GWA4
Pocket Pocket 27
ColabFold model
P2Rank 0.83 · Pocket 1
FPocket 0.783 · Pocket 68
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 121 / 4744 genomes with a hit
Prevalence 2.6%

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.

MSQRGLEALLRPKSIAVIGASMKPQRAGYLMMRNLLAGGFNGPVMPVTPAWKAVLGVLAWPTIESLPFTPDLAVLCTNARRNRELLEALGQKGCKTCIILSSQPEQYPALLECAARYQMRLLGPNSLGLLAPWQGLNASFSPVPIHRGKLAFISQSAAVSNTILDWAQQREMGFSYFIALGDSLDIDVDDLLDFLARDSKTSAILLYLEHLSDARRFVSAARSASRNKPILVIKSGRSPAAQKLLHANSGMDPAWDAAIQRAGLLRVQDTHELFSAVETLSHMRPLRGEKLMIVSNGAAPAALALDELWLRNGKLAALSEETRDALRQALPVGVEIANPLDLRDDASSEHYQRAVNVLLNSQDYDALLVIHSPSAAAPGTESALALIDALKHHPRGKYVTVLTNWCGEFSSQEARRLFSDAGLPTYRTPEGTITAFMHMVEYRRNQKQLRETPVLPDSLTANTSEAHALLQQAIEDGATTLDTHEVSPVLRAYGIHTLPTWIAADSAEAVHIAEQIGYPVALKLRSPDIPHKSEVQGVMLYLRTAAEVQQAADAMIDRVKLAWPQARIHGLLVQSMANRAGAQELRVVVEHDPVFGPLIMLGEGGVEWRAEDQAAVALPPLNMNLARYLVIQAIKNKKIRGRSALRPLDIAGLSQLLVQVSNLIVDCPEIQRLDIHPLLASGNEFTALDVTLGLAPFSGDSESRLAIRPYPHQLEEWVVMKNGDRCLFRPILPEDEPQLLAFIAQVTKEDLYYRYFSEINEFTHDDLANMTQIDYDREMAFVAVRTSAEKSEILGVTRAISDPDNIDAEFAVLVRSDLKGLGLGRRLLEKLIAYTQSHGLQRLNGITMPNNRGMIGLARKLGFTVDIQLEDGIVSLSLPLNQG

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

2 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

2
  • GO:0016747 Catalysis of the transfer of an acyl group, other than amino-acyl, from one compound (donor) to another (acceptor).
  • 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.

32 records
Show feature table
Start End DB Term Name
615 866 SUPERFAMILY SSF55729 Acyl-CoA N-acyltransferases (Nat)
615 866 InterPro IPR016181 Acyl-CoA N-acyltransferase
13 129 Pfam PF13380 CoA binding domain
13 129 InterPro IPR003781 CoA-binding
285 454 Gene3D G3DSA:3.40.50.261 -
285 454 InterPro IPR016102 Succinyl-CoA synthetase-like
125 286 SUPERFAMILY SSF52210 Succinyl-CoA synthetase domains
125 286 InterPro IPR016102 Succinyl-CoA synthetase-like
499 576 FunFam G3DSA:3.30.1490.20:FF:000020 Protein lysine acetyltransferase
472 692 Pfam PF13549 ATP-grasp domain
762 863 Pfam PF00583 Acetyltransferase (GNAT) family
762 863 InterPro IPR000182 GNAT domain
481 685 SUPERFAMILY SSF56059 Glutathione synthetase ATP-binding domain-like
499 576 Gene3D G3DSA:3.30.1490.20 -
499 576 InterPro IPR013815 ATP-grasp fold, subdomain 1
126 282 FunFam G3DSA:3.40.50.261:FF:000009 Protein lysine acetyltransferase
147 280 Pfam PF13607 Succinyl-CoA ligase like flavodoxin domain
147 280 InterPro IPR032875 Succinyl-CoA synthetase-like, flavodoxin domain
479 690 Gene3D G3DSA:3.30.470.20 -
126 282 Gene3D G3DSA:3.40.50.261 -
126 282 InterPro IPR016102 Succinyl-CoA synthetase-like
9 104 SMART SM00881 CoA_binding_2
9 104 InterPro IPR003781 CoA-binding
1 695 PANTHER PTHR43334 ACETATE--COA LIGASE [ADP-FORMING]
717 883 Gene3D G3DSA:3.40.630.30 -
2 136 SUPERFAMILY SSF51735 NAD(P)-binding Rossmann-fold domains
2 136 InterPro IPR036291 NAD(P)-binding domain superfamily
4 125 Gene3D G3DSA:3.40.50.720 -
726 881 ProSiteProfiles PS51186 Gcn5-related N-acetyltransferase (GNAT) domain profile.
726 881 InterPro IPR000182 GNAT domain
287 447 SUPERFAMILY SSF52210 Succinyl-CoA synthetase domains
287 447 InterPro IPR016102 Succinyl-CoA synthetase-like

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
0.686
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.393
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.191
Show in viewer
Surrounding area
Pocket 4 P2Rank #4
0.175
Show in viewer
Surrounding area
Pocket 5 P2Rank #5
0.156
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #27
0.432 Unusual size
Show in viewer
Surrounding area
Pocket 2 FPocket #13
0.268 Unusual size
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_A0A0H3GWA4
AlphaFold DB full sequence Viewing
ColabFold VK055_4594
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.

52 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 2 records from similar proteins
Structural ligands 2 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
A12 PDB via homolog 425.2 Da · LogP -1.64 · TPSA 223.4 Open detail RCSB PDB
ACP PDB via homolog Detail RCSB PDB
ZINC105469665 ZINC proposed compound · Tanimoto 0.873 Detail ZINC
ZINC13527614 ZINC proposed compound · Tanimoto 0.873 Detail ZINC
ZINC219330894 ZINC proposed compound · Tanimoto 0.873 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
A12 RCSB PDB B1L7P8 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)…
ACP RCSB PDB B1L3C9 505.2 Da LogP -1.52 TPSA 269.9 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…

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.