KpATCC43816 Protein target profile

lamB porin family protein

Accession: VK055_2117

Gene: AIK80722.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A6T5L4
Length 423
Pocket druggability (P2Rank · AlphaFold DB model) 0.668
Functional annotation 0 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
No hit
Gut microbiome similarity
0.5% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
93.32 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) 0.668
Structure A6T5L4
Pocket Pocket 1
Druggability (FPocket) 0.802
Structure A6T5L4
Pocket Pocket 16
ColabFold model
P2Rank 0.453 · Pocket 1
FPocket 0.374 · Pocket 15
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 25 / 4744 genomes with a hit
Prevalence 0.5%

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.

MNTTLRALSVALAAALIAPSAFAATAAIPTIDFHGYMRAGVGVSGDGSEAEWQKNKLGRLGNESDTYGELELGSEVYKKDDVSFYLDSMVSMVSDGSNDNETTLNDDAQFGLRQLNLQIKGLIPGDPNAVIWGGKRYYQRHDLHIIDTKYWNISGSGAGVENYTLGPGAVSLAWIRGDANDVDYRVDGDSNVNINYIDLRYAGWKPWAGSWTEFGIDYAMPNTTKKQDSYGGLYDADNGVMLTGEISQDMLGGYNKTVLQYANKGLAQNMVSQGGGWYDMWNYVNDATGYRVINTGLIPITEKFSINHVLTWGSADDITDYTDKTRMLSLVARGQYQFTDYVRLIGEVGGFYQKDSYNNGTSYKQAGEKYTIALGLADGPDFMSRPELRIFASYLNDSEDGKPFEDQTANNTWNFGVQVEAWW

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

8 GO

Subcellular localization

Localization
OuterMembrane

Gene Ontology (GO)

8
  • GO:0015768 The directed movement of maltose into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Maltose is the disaccharide 4-O-alpha-D-glucopyranosyl-D-glucopyranose, an intermediate in the catabolism of glycogen and starch.
  • GO:0015288 Enables the transfer of substances, sized less than 1000 Da, from one side of a membrane to the other. The transmembrane portions of porins consist exclusively of beta-strands which form a beta-barrel. They are found in the outer membranes of Gram-negative bacteria, mitochondria, plastids and possibly acid-fast Gram-positive bacteria.
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0009279 A lipid bilayer that forms the outermost membrane of the cell envelope; enriched in polysaccharide and protein; the outer leaflet of the membrane contains specific lipopolysaccharide structures.
  • GO:0042956 The directed movement of maltodextrin, any polysaccharide of glucose residues in beta-(1,4) linkage, across a membrane.
  • GO:0042958 Enables the transfer of maltodextrin, any polysaccharide of glucose residues in beta-(1,4) linkage, from one side of a membrane to the other.
  • GO:0015481 Enables the transfer of maltose from one side of a membrane to the other. Maltose is the disaccharide 4-O-alpha-D-glucopyranosyl-D-glucopyranose, an intermediate in the enzymatic breakdown of glycogen and starch. This transporter is a porin so enables the energy independent passage of substances, sized less than 1000 Da, across a membrane. The transmembrane portions of porins consist exclusively of beta-strands which form a beta-barrel. They are found in the outer membranes of Gram-negative bacteria, mitochondria, plastids and possibly acid-fast Gram-positive bacteria.
  • GO:0034219 The process in which a carbohydrate is transported across a membrane.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

18 records
Show feature table
Start End DB Term Name
1 23 SignalP_GRAM_POSITIVE SignalP-TM SignalP-TM
2 423 Hamap MF_01301 Maltoporin [lamB].
2 423 InterPro IPR023738 Maltoporin
1 23 Phobius SIGNAL_PEPTIDE Signal peptide region
24 423 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
1 23 SignalP_EUK SignalP-noTM SignalP-noTM
1 423 PANTHER PTHR38762 CRYPTIC OUTER MEMBRANE PORIN BGLH-RELATED
33 423 Pfam PF02264 LamB porin
33 423 InterPro IPR003192 Porin, LamB-type
19 23 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
31 423 SUPERFAMILY SSF56935 Porins
31 423 CDD cd01346 Maltoporin-like
31 423 InterPro IPR003192 Porin, LamB-type
1 6 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
31 423 Gene3D G3DSA:2.40.170.10 Porin, LamB type
31 423 InterPro IPR036998 Porin, LamB-type superfamily
7 18 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
7 29 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.

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
0.668
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Surrounding area
Pocket 2 P2Rank #2
0.184
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Surrounding area
Pocket 3 P2Rank #3
0.113
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Surrounding area
Pocket 4 P2Rank #4
0.092
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Surrounding area
Pocket 5 P2Rank #5
0.068
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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 #16
0.802
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Surrounding area
Pocket 2 FPocket #15
0.498
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Surrounding area
Pocket 3 FPocket #2
0.375
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Surrounding area
Residue sets
UniProt: Site:254-254 Greasy slide, important in sugar transport
UniProt: Site:36-36 Greasy slide, important in sugar transport
UniProt: Site:422-422 Greasy slide, important in sugar transport
UniProt: Site:67-67 Greasy slide, important in sugar transport
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_A6T5L4
AlphaFold DB full sequence Viewing
ColabFold VK055_2117
ColabFold full sequence Loaded

Cross-references

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