KpATCC43816 Protein target profile

ATP-dependent RNA helicase, specific for 23S rRNA

Accession: VK055_1062

Gene: AIK79685.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GSK5
Length 457
Pocket druggability (P2Rank · AlphaFold DB model) 0.67
Direct ligand evidence 0 56 total records
Functional annotation 1 EC 8 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 (%)
50.538 Lower values reduce human off-target concern.
Human E-value
6.67e-20
Gut microbiome similarity
3.0% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
43.62 Higher values support similarity to known essential genes.
DEG E-value
1.16e-80 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
93.6 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) 0.67
Structure A0A0H3GSK5
Pocket Pocket 1
Druggability (FPocket) 0.797
Structure A0A0H3GSK5
Pocket Pocket 2
ColabFold model
P2Rank 0.801 · Pocket 1
FPocket 0.422 · Pocket 37
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 142 / 4744 genomes with a hit
Prevalence 3.0%

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.

MTAFSTLTVLPAAQLANLNELGYLSMTPVQAAALPAILAGKDVRVQAKTGSGKTAAFGLGLLQHIDPARFETQSLVLCPTRELADQVAGELRRLARCLPNIKILMLCGGQPFGAQRDSLQHAPHIIVATPGRLLDHLQKGTVSLDALQTLVMDEADRMLDMGFSDAIDEVIRFAPADRQTLLFSATWPAAIAAISGRVQRNPQTIEIDTVDALPAIEQQFFEVSRHGKIALLQRLLSQHQPASCVVFCNTKRDCQAVCDALNAAGQSALSLHGDLEQRDRDQTLVRFANGSVRVLVATDVAARGLDIKSLALVVNFELAWDPEVHVHRIGRTARAGEQGLAISFCAPEEAQRATILADMLQLSLNWLPAPTGNTIAPLTAEMATLCIDGGKKAKMRPGDVLGALTGDMGFDGADIGKITVHPAHVYVAIRQNMAQKAYKQLQNGKIKGKSCRVRLLK

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 8 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

8
  • GO:0000027 The aggregation, arrangement and bonding together of constituent RNAs and proteins to form the large ribosomal subunit.
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0003676 Binding to a nucleic acid.
  • GO:0003724 Unwinding of an RNA helix, driven by ATP hydrolysis.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0034458 Unwinding of an RNA helix in the 3' to 5' direction, driven by ATP hydrolysis.
  • GO:0016887 Catalysis of the reaction: ATP + H2O = ADP + H+ phosphate. ATP hydrolysis is used in some reactions as an energy source, for example to catalyze a reaction or drive transport against a concentration gradient.
  • GO:0003723 Binding to an RNA molecule or a portion thereof.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

37 records
Show feature table
Start End DB Term Name
255 336 SMART SM00490 helicmild6
255 336 InterPro IPR001650 Helicase, C-terminal
216 345 CDD cd18787 SF2_C_DEAD
15 206 CDD cd00268 DEADc
1 208 Gene3D G3DSA:3.40.50.300 -
1 208 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
1 2 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
32 457 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
3 13 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
384 454 Pfam PF03880 DbpA RNA binding domain
384 454 InterPro IPR005580 DEAD box helicase DbpA/CsdA, RNA-binding domain
231 375 ProSiteProfiles PS51194 Superfamilies 1 and 2 helicase C-terminal domain profile.
231 375 InterPro IPR001650 Helicase, C-terminal
27 190 Pfam PF00270 DEAD/DEAH box helicase
27 190 InterPro IPR011545 DEAD/DEAH box helicase domain
5 457 Hamap MF_00965 ATP-dependent RNA helicase DbpA [dbpA].
5 457 InterPro IPR028619 ATP-dependent RNA helicase DbpA
3 358 PANTHER PTHR47959 ATP-DEPENDENT RNA HELICASE RHLE-RELATED
228 336 Pfam PF00271 Helicase conserved C-terminal domain
228 336 InterPro IPR001650 Helicase, C-terminal
151 159 ProSitePatterns PS00039 DEAD-box subfamily ATP-dependent helicases signature.
151 159 InterPro IPR000629 ATP-dependent RNA helicase DEAD-box, conserved site
34 205 ProSiteProfiles PS51192 Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile.
34 205 InterPro IPR014001 Helicase superfamily 1/2, ATP-binding domain
72 350 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
72 350 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
384 456 FunFam G3DSA:3.30.70.330:FF:000254 ATP-dependent RNA helicase DbpA
384 456 CDD cd12501 RRM_EcDbpA_like
14 31 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
212 379 FunFam G3DSA:3.40.50.300:FF:001245 ATP-dependent RNA helicase DbpA
1 31 Phobius SIGNAL_PEPTIDE Signal peptide region
384 456 Gene3D G3DSA:3.30.70.330 -
384 456 InterPro IPR012677 Nucleotide-binding alpha-beta plait domain superfamily
212 365 Gene3D G3DSA:3.40.50.300 -
212 365 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
22 219 SMART SM00487 ultradead3
22 219 InterPro IPR014001 Helicase superfamily 1/2, ATP-binding domain

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
0.67
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Surrounding area
Pocket 2 P2Rank #2
0.351
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Surrounding area
Pocket 3 P2Rank #3
0.328
Likely same site as FPocket 2 2.3 Å 17 shared residues 100% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.099
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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 #2
0.797 Unusual size
Likely same site as P2Rank 3 2.3 Å 17 shared residues 100% 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_A0A0H3GSK5
AlphaFold DB full sequence Viewing
ColabFold VK055_1062
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.

56 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 6 records from similar proteins
Structural ligands 6 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
8OD PDB via homolog 443.2 Da · LogP -2.45 · TPSA 252.6 Open detail RCSB PDB
8OP PDB via homolog Detail RCSB PDB
8OX PDB via homolog Detail RCSB PDB
AF3 PDB via homolog Detail RCSB PDB
ANP 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
8OD RCSB PDB Q72GF3 443.2 Da LogP -2.45 TPSA 252.6 2 viol. ✓ Clean c1nc(c2c(n1)N(C(=O)N2)[C@H]3[C@@H]([C@@H]([C@H]…
8OP RCSB PDB Q72GF3 363.2 Da LogP -2.57 TPSA 206.0 1 viol. ✓ Clean c1nc(c2c(n1)N(C(=O)N2)[C@H]3[C@@H]([C@@H]([C@H]…
8OX RCSB PDB Q72GF3 283.2 Da LogP -2.69 TPSA 159.5 ✓ Ro5 ✓ Clean c1nc(c2c(n1)N(C(=O)N2)[C@H]3[C@@H]([C@@H]([C@H]…
AF3 RCSB PDB P38919 84.0 Da LogP 0.88 TPSA 0.0 ✓ Ro5 ✓ Clean F[Al](F)F
ANP RCSB PDB O01378 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)…
LMR RCSB PDB Q9UJV9 134.1 Da LogP -1.09 TPSA 94.8 ✓ Ro5 ✓ Clean C([C@@H](C(=O)O)O)C(=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.