KpATCC43816 Protein target profile

preprotein translocase, SecA subunit

Accession: VK055_2469

Gene: AIK81066.1 secA 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GJB0
Length 901
Pocket druggability (P2Rank · AlphaFold DB model) 0.701
Direct ligand evidence 0 54 total records
Functional annotation 1 EC 12 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
11.7% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
87.04 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) 0.701
Structure A0A0H3GJB0
Pocket Pocket 1
Druggability (FPocket) 0.259
Structure A0A0H3GJB0
Pocket Pocket 68
ColabFold model
P2Rank 0.685 · Pocket 1
FPocket 0.803 · Pocket 58
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 556 / 4744 genomes with a hit
Prevalence 11.7%

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.

MLIKMLTKVFGSRNDRTLRRMRKVVNIINGMEPAMEKLSDDELKAKTAEFRARLEKGETLESLIPEAFAVVREASKRVFGMRHFDVQLLGGMVLNDRCIAEMRTGEGKTLTATLPAYLNALTGKGVHVVTVNDYLAQRDAENNRPLFEFLGMTVGINMSGLPAPAKREAYAADITYGTNNEYGFDYLRDNMAFSPEERVQRKLHYALVDEVDSILIDEARTPLIISGPAEDSSEMYRKVNKIIPHLIRQEKEDSDTFTGEGHFSVDEKARQVNLTERGLVLIEELLVQEGIMDEGESLYSPTNIMLMHHVTAALRAHALFTRDVDYIVKDGEVIIVDEHTGRTMQGRRWSDGLHQAVEAKEGVEIQNENQTLASITFQNYFRLYEKLAGMTGTADTEAFEFSSIYKLDTVVVPTNRPMIRKDMADLVYMTEAEKIQAIIEDIKTRTAAGQPVLVGTISIEKSEVVSRELTKAGIKHNVLNAKFHASEADIVAQAGYPSAVTIATNMAGRGTDIMLGGSWQAEVAALENPTPEQIEKIKADWQVRHDAVLAAGGLHIIGTERHESRRIDNQLRGRAGRQGDAGSSRFYLSMEDALMRIFASDRVSGMMRKLGMKPGEAIEHPWVTKAIANAQRKVESRNFDIRKQLLEYDDVANDQRRAIYTQRNELLDVSDVSETINSIREDVFKATIDAHIPPQSLEEMWDIEGLQERLKNDFDLDLPIKEWLDKEPELHEETLRERILQSAVETYQRKEEVVGAEMMRHFEKGVMLQTLDSLWKEHLAAMDYLRQGIHLRGYAQKDPKQEYKRESFSMFAAMLESLKYEVISTLSKVQVRMPEEVEAMEQQRREEAERLAQMQQLSHQSDDEAAAQDLAAQTGERKVGRNDPCPCGSGKKYKQCHGRLS

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 12 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

12
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0017038 The targeting and directed movement of proteins into a cell or organelle. Not all import involves an initial targeting event.
  • GO:0006886 The directed movement of proteins in a cell, including the movement of proteins between specific compartments or structures within a cell, such as organelles of a eukaryotic cell.
  • GO:0006605 The process of targeting specific proteins to particular regions of the cell, typically membrane-bounded subcellular organelles. Usually requires an organelle specific protein sequence motif.
  • GO:0031522 A transmembrane protein complex involved in the translocation of proteins across the cytoplasmic membrane. In Gram-negative bacteria, Sec-translocated proteins are subsequently secreted via the type II, IV, or V secretion systems. Sec complex components include SecA, D, E, F, G, Y and YajC.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
  • GO:0046872 Binding to a metal ion.
  • GO:0008564 Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O + protein+(in) = ADP + phosphate + protein+(out); drives the concomitant secretion of proteins.
  • GO:0065002 The directed movement of proteins in a cell, from one side of a membrane to another by means of some agent such as a transporter or pore.
  • GO:0043952 The process in which unfolded proteins are transported across the cytoplasmic membrane in Gram-positive and Gram-negative bacteria by the Sec complex, in a process involving proteolytic cleavage of an N-terminal signal peptide.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

63 records
Show feature table
Start End DB Term Name
232 358 Pfam PF01043 SecA preprotein cross-linking domain
232 358 InterPro IPR011130 SecA, preprotein cross-linking domain
621 833 Gene3D G3DSA:1.10.3060.10 Helical scaffold and wing domains of SecA
231 370 Gene3D G3DSA:3.90.1440.10 -
881 899 Pfam PF02810 SEC-C motif
881 899 InterPro IPR004027 SEC-C motif
852 901 MobiDBLite mobidb-lite consensus disorder prediction
21 240 FunFam G3DSA:3.40.50.300:FF:000081 Preprotein translocase subunit SecA
621 833 FunFam G3DSA:1.10.3060.10:FF:000001 Preprotein translocase subunit SecA
4 415 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
4 415 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
837 857 Coils Coil Coil
434 635 ProSiteProfiles PS51194 Superfamilies 1 and 2 helicase C-terminal domain profile.
434 635 InterPro IPR001650 Helicase, C-terminal
89 247 ProSiteProfiles PS51192 Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile.
89 247 InterPro IPR014001 Helicase superfamily 1/2, ATP-binding domain
3 870 PANTHER PTHR30612 SECA INNER MEMBRANE COMPONENT OF SEC PROTEIN SECRETION SYSTEM
3 870 InterPro IPR000185 Protein translocase subunit SecA
228 358 SMART SM00958 SecA_PP_bind_2
228 358 InterPro IPR011130 SecA, preprotein cross-linking domain
229 368 FunFam G3DSA:3.90.1440.10:FF:000001 Preprotein translocase subunit SecA
28 817 NCBIfam TIGR00963 preprotein translocase subunit SecA
28 817 InterPro IPR000185 Protein translocase subunit SecA
417 620 FunFam G3DSA:3.40.50.300:FF:000113 Preprotein translocase subunit SecA
420 589 CDD cd18803 SF2_C_secA
420 589 InterPro IPR044722 SecA, C-terminal helicase domain
227 368 SUPERFAMILY SSF81767 Pre-protein crosslinking domain of SecA
227 368 InterPro IPR036670 SecA, preprotein cross-linking domain superfamily
417 620 Gene3D G3DSA:3.40.50.300 -
417 620 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
617 830 Pfam PF07516 SecA Wing and Scaffold domain
617 830 InterPro IPR011116 SecA Wing/Scaffold
620 889 SUPERFAMILY SSF81886 Helical scaffold and wing domains of SecA
620 889 InterPro IPR036266 SecA, Wing/Scaffold superfamily
7 402 Pfam PF07517 SecA DEAD-like domain
7 402 InterPro IPR011115 SecA DEAD-like, N-terminal
170 190 PRINTS PR00906 SecA protein signature
170 190 InterPro IPR000185 Protein translocase subunit SecA
376 393 PRINTS PR00906 SecA protein signature
376 393 InterPro IPR000185 Protein translocase subunit SecA
63 87 PRINTS PR00906 SecA protein signature
63 87 InterPro IPR000185 Protein translocase subunit SecA
101 115 PRINTS PR00906 SecA protein signature
101 115 InterPro IPR000185 Protein translocase subunit SecA
339 361 PRINTS PR00906 SecA protein signature
339 361 InterPro IPR000185 Protein translocase subunit SecA
117 127 PRINTS PR00906 SecA protein signature
117 127 InterPro IPR000185 Protein translocase subunit SecA
413 426 PRINTS PR00906 SecA protein signature
413 426 InterPro IPR000185 Protein translocase subunit SecA
416 618 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
416 618 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
5 832 Hamap MF_01382 Protein translocase subunit SecA [secA].
5 832 InterPro IPR000185 Protein translocase subunit SecA
23 416 Gene3D G3DSA:3.40.50.300 -
23 416 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
500 515 ProSitePatterns PS01312 SecA family signature.
500 515 InterPro IPR020937 SecA conserved site
3 619 ProSiteProfiles PS51196 SecA family profile.
3 619 InterPro IPR014018 SecA motor DEAD
6 402 SMART SM00957 SecA_DEAD_2
6 402 InterPro IPR011115 SecA DEAD-like, N-terminal
42 414 CDD cd17928 DEXDc_SecA

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
0.701
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Surrounding area
Pocket 2 P2Rank #2
0.595
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Surrounding area
Pocket 3 P2Rank #3
0.549
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Surrounding area
Pocket 4 P2Rank #4
0.538
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Surrounding area
Pocket 5 P2Rank #5
0.234
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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 #68
0.259
Show in viewer
Surrounding area
Residue sets
UniProt: Binding site:105-109
UniProt: Binding site:512-512
UniProt: Binding site:87-87
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_A0A0H3GJB0
AlphaFold DB full sequence Viewing
ColabFold VK055_2469
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.

54 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 4 records from similar proteins
Structural ligands 4 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
ANP PDB via homolog Detail RCSB PDB
BEF PDB via homolog Detail RCSB PDB
PGV PDB via homolog Detail RCSB PDB
ZINC102191119 ZINC proposed compound · Tanimoto 0.875 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 Q183M9 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)…
ANP RCSB PDB P10408 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)…
BEF RCSB PDB P28366 66.0 Da LogP 0.88 TPSA 0.0 ✓ Ro5 ✓ Clean [Be-](F)(F)F
PGV RCSB PDB P28366 749.0 Da LogP 10.45 TPSA 148.8 2 viol. ✓ Clean CCCCCCCCCCCCCCCC(=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.

Cross-references

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