KpATCC43816 Protein target profile

protein-export membrane protein SecF

Accession: VK055_2194

Gene: secF AIK80799.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GKD2
Length 323
Pocket druggability (P2Rank · AlphaFold DB model) 0.677
Direct ligand evidence 0 52 total records
Functional annotation 0 EC 6 GO
Target summary

Strong target candidate with converging metabolic, structural and chemical evidence.

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
2.7% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
84.13 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) 0.677
Structure A0A0H3GKD2
Pocket Pocket 1
Druggability (FPocket) 0.957
Structure A0A0H3GKD2
Pocket Pocket 1
ColabFold model
P2Rank 0.463 · Pocket 1
FPocket 0.735 · Pocket 25
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 126 / 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.

MAQEYTVEQLNHGRKVWDFMRWDYWAFGISGFLLIVSIAIIGVRGFNWGLDFTGGTVIEITLEKPVDLDQMRDSLQKAGFEEPQVQNFGSSRDIMVRMPPVHDANGSQELGSKVVTVINESTSQNAAVKRIEFVGPSVGADLAQTGALALIAALVCILIYVGFRFEWRLAAGVVIALAHDVVITMGVLSLFHIEIDLTIVASLMSVIGYSLNDSIVVSDRIRENFRKIRRGTPYEIFNVSLTQTLHRTLITSGTTLMVILMLFLFGGPILEGFSLTMLIGVSIGTASSIYVASALALKLGMKREHLIQQKVEKEGADQPSILP

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

6
  • GO:0015450 Primary active carrier-mediated transport of a protein across a membrane, driven by the hydrolysis of the diphosphate bond of inorganic pyrophosphate, ATP, or another nucleoside triphosphate. The transport protein may or may not be transiently phosphorylated, but the substrate is not phosphorylated.
  • 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:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated 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: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: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.

42 records
Show feature table
Start End DB Term Name
105 310 Gene3D G3DSA:1.20.1640.10 Multidrug efflux transporter AcrB transmembrane domain
197 217 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
143 162 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
24 46 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
170 191 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
44 59 PRINTS PR01755 Bacterial translocase SecF protein signature
44 59 InterPro IPR022645 Protein-export membrane protein SecD/SecF, bacterial
208 226 PRINTS PR01755 Bacterial translocase SecF protein signature
208 226 InterPro IPR022645 Protein-export membrane protein SecD/SecF, bacterial
160 174 PRINTS PR01755 Bacterial translocase SecF protein signature
160 174 InterPro IPR022645 Protein-export membrane protein SecD/SecF, bacterial
240 255 PRINTS PR01755 Bacterial translocase SecF protein signature
240 255 InterPro IPR022645 Protein-export membrane protein SecD/SecF, bacterial
248 270 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 23 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
275 297 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
110 311 FunFam G3DSA:1.20.1640.10:FF:000006 Protein-export membrane protein SecF
117 301 Pfam PF02355 Protein export membrane protein
117 301 InterPro IPR022813 Protein-export membrane protein SecD/SecF, archaeal and bacterial
142 163 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
192 196 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
218 248 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
169 191 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
17 303 Hamap MF_01464_B Protein-export membrane protein SecF [secF].
17 303 InterPro IPR005665 Protein-export membrane protein SecF, bacterial
249 269 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
298 323 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
44 141 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
270 274 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
275 297 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
78 303 SUPERFAMILY SSF82866 Multidrug efflux transporter AcrB transmembrane domain
24 43 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
40 66 Pfam PF07549 SecD/SecF GG Motif
40 66 InterPro IPR022646 Protein-export membrane protein SecD/SecF/SecDF, conserved site
195 217 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
18 298 NCBIfam TIGR00966 protein translocase subunit SecF
18 298 InterPro IPR005665 Protein-export membrane protein SecF, bacterial
18 297 PANTHER PTHR30081 PROTEIN-EXPORT MEMBRANE PROTEIN SEC
18 297 InterPro IPR022813 Protein-export membrane protein SecD/SecF, archaeal and bacterial
164 169 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
126 289 NCBIfam TIGR00916 SecD/SecF family protein translocase subunit
126 289 InterPro IPR022645 Protein-export membrane protein SecD/SecF, bacterial

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
0.677
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Surrounding area
Pocket 2 P2Rank #2
0.391
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Surrounding area
Pocket 3 P2Rank #3
0.136
Likely same site as FPocket 1 4.3 Å 10 shared residues 91% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.026
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Surrounding area
Pocket 5 P2Rank #5
0.016
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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
0.957
Likely same site as P2Rank 3 4.3 Å 10 shared residues 91% of smaller site
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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_A0A0H3GKD2
AlphaFold DB full sequence Viewing
ColabFold VK055_2194
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
15P PDB via homolog 1529.8 Da · LogP 0.17 · TPSA 334.1 Open detail RCSB PDB
OLC PDB via homolog Detail RCSB PDB
ZINC1501016272 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1501016273 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1501016315 ZINC proposed compound · Tanimoto 1.000 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
15P RCSB PDB Q9RTE3 1529.8 Da LogP 0.17 TPSA 334.1 2 viol. ✓ Clean COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO…
OLC RCSB PDB Q5SKE6 356.5 Da LogP 4.92 TPSA 66.8 ✓ Ro5 ✓ Clean CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](CO)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.