KpATCC43816 Protein target profile

primosomal protein N'

Accession: VK055_3246

Gene: priA AIK81807.1 3D evidence: Experimental + ColabFold model Metabolism Not in network UniProt A6TGC5
Length 731
Pocket druggability (P2Rank · Experimental) 0.661
Direct ligand evidence 0 51 total records
Functional annotation 0 EC 6 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
3.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
88.661 Higher values support similarity to known essential genes.
DEG E-value
0.0 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
90.69 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

PDB experimental structure

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) 0.661
Structure 6DGD
Pocket Pocket 1
Druggability (FPocket) 0.962
Structure 6DGD
Pocket Pocket 48
ColabFold model
P2Rank 0.88 · Pocket 1
FPocket 0.688 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 150 / 4744 genomes with a hit
Prevalence 3.2%

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.

MSVAHVALPVPLPRTFDYLLPEGMAVKAGCRVRVPFGKQERIGIVAAVSERSELPLDELKPVAEALDDEPVFSTTVWRLLMWAAEYYHHPIGDVLFHALPVMLRQGKPASATPLWYWFATEQGQVVDLNGLKRSRKQQQALAALRQGKIWRHQVGELEFNEAALQALRGKGLAELACEAPALTDWRSAYSVAGERLRLNTEQATAVGAIHSAADRFSAWLLAGITGSGKTEVYLSVLENVLAQGRQALVMVPEIGLTPQTIARFRQRFNAPVEVLHSGLNDSERLSAWLKAKNGEAAIVIGTRSSLFTPFKDLGVIVIDEEHDSSYKQQEGWRYHARDLAVWRAHSEQIPIILGSATPALETLHNVRQGKYRQLTLSKRAGNARPAQQHVLDLKGQPLQAGLSPALISRMRQHLQADNQVILFLNRRGFAPALLCHDCGWIAECPRCDSYYTLHQAQHHLRCHHCDSQRPIPRQCPSCGSTHLVPVGIGTEQLEQALAPLFPEVPISRIDRDTTSRKGALEEHLAAVHRGGARILIGTQMLAKGHHFPDVTLVSLLDVDGALFSADFRSAERFAQLYTQVSGRAGRAGKQGEVILQTHHPEHPLLQTLLYKGYDAFAEQALAERQTMQLPPWTSHVLIRAEDHNNQQAPLFLQQLRNLLQASPLADEKLWVLGPVPALAPKRGGRWRWQILLQHPSRVRLQHIVSGTLALINTLPEARKVKWVLDVDPIEG

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

Subcellular localization

Localization
Cytoplasmic

Gene Ontology (GO)

6
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0003676 Binding to a nucleic acid.
  • GO:0006260 The cellular metabolic process in which a cell duplicates one or more molecules of DNA. DNA replication begins when specific sequences, known as origins of replication, are recognized and bound by the origin recognition complex, and ends when the original DNA molecule has been completely duplicated and the copies topologically separated. The unit of replication usually corresponds to the genome of the cell, an organelle, or a virus. The template for replication can either be an existing DNA molecule or RNA.
  • GO:0003678 Unwinding of a DNA helix, driven by ATP hydrolysis.
  • GO:0032508 OBSOLETE. The process in which interchain hydrogen bonds between two strands of DNA are broken or 'melted', generating a region of unpaired single strands.
  • GO:0003677 Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

34 records
Show feature table
Start End DB Term Name
631 728 Pfam PF18074 Primosomal protein N C-terminal domain
631 728 InterPro IPR041236 Primosomal protein N, C-terminal domain
220 729 NCBIfam TIGR00595 primosomal protein N'
220 729 InterPro IPR005259 Primosomal protein N'
202 379 CDD cd17929 DEXHc_priA
491 588 SMART SM00490 helicmild6
491 588 InterPro IPR001650 Helicase, C-terminal
6 731 Hamap MF_00983 Probable primosomal protein N' [priA].
6 731 InterPro IPR005259 Primosomal protein N'
490 651 FunFam G3DSA:3.40.50.300:FF:001397 Primosomal protein N'
186 378 FunFam G3DSA:3.40.50.300:FF:000489 Primosome assembly protein PriA
389 625 CDD cd18804 SF2_C_priA
218 363 Pfam PF00270 DEAD/DEAH box helicase
218 363 InterPro IPR011545 DEAD/DEAH box helicase domain
2 112 Gene3D G3DSA:3.40.1440.60 -
2 112 InterPro IPR042115 Primosomal protein N', 3' DNA-binding domain superfamily
470 637 ProSiteProfiles PS51194 Superfamilies 1 and 2 helicase C-terminal domain profile.
470 637 InterPro IPR001650 Helicase, C-terminal
6 100 Pfam PF17764 3'DNA-binding domain (3'BD)
6 100 InterPro IPR041222 Primosomal protein N', 3' DNA-binding domain
402 624 Gene3D G3DSA:3.40.50.300 -
402 624 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
183 378 Gene3D G3DSA:3.40.50.300 -
183 378 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
210 376 ProSiteProfiles PS51192 Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile.
210 376 InterPro IPR014001 Helicase superfamily 1/2, ATP-binding domain
212 600 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
212 600 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
3 110 FunFam G3DSA:3.40.1440.60:FF:000001 Primosomal protein N
444 470 Pfam PF18319 PriA DNA helicase Cys-rich region (CRR) domain
444 470 InterPro IPR040498 PriA DNA helicase, Cys-rich region (CRR) domain
194 389 SMART SM00487 ultradead3
194 389 InterPro IPR014001 Helicase superfamily 1/2, ATP-binding domain
1 729 PANTHER PTHR30580 PRIMOSOMAL PROTEIN N

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
0.661
Likely same site as FPocket 48 1.3 Å 26 shared residues 96% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.634
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Surrounding area
Pocket 3 P2Rank #3
0.154
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Surrounding area
Pocket 4 P2Rank #4
0.153
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Surrounding area
Pocket 5 P2Rank #5
0.115
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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 #48
0.962 Unusual size
Likely same site as P2Rank 1 1.3 Å 26 shared residues 96% of smaller site
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Surrounding area
Pocket 2 FPocket #1
0.681 Unusual size
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Surrounding area
Pocket 3 FPocket #46
0.614 Unusual size
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Surrounding area
Pocket 4 FPocket #38
0.514
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Surrounding area
All structural evidence 3 experimental · 1 predicted

Structural evidence

3 + 1

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
PDB 4NL4
X-ray A Loaded
PDB 4NL8
X-ray A Loaded
PDB 6DGD
X-ray A Viewing
ColabFold VK055_3246
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.

51 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 1 records from similar proteins
Structural ligands 1 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
AGS PDB via homolog 523.2 Da · LogP -1.51 · TPSA 262.1 Open detail RCSB PDB
ZINC12360002 ZINC proposed compound · Tanimoto 0.855 Detail ZINC
ZINC12360703 ZINC proposed compound · Tanimoto 0.855 Detail ZINC
ZINC12503599 ZINC proposed compound · Tanimoto 0.855 Detail ZINC
ZINC16546165 ZINC proposed compound · Tanimoto 0.855 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
AGS RCSB PDB Q72KB4 523.2 Da LogP -1.51 TPSA 262.1 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.