KpATCC43816 Protein target profile

transcription-repair coupling factor

Accession: VK055_1352

Gene: mfd AIK79975.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GMV4
Length 1148
Pocket druggability (P2Rank · AlphaFold DB model) 0.901
Direct ligand evidence 0 51 total records
Functional annotation 1 EC 9 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
3.5% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
83.33 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) 0.901
Structure A0A0H3GMV4
Pocket Pocket 1
Druggability (FPocket) 0.894
Structure A0A0H3GMV4
Pocket Pocket 95
ColabFold model
P2Rank 0.975 · Pocket 1
FPocket 0.39 · Pocket 22
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 166 / 4744 genomes with a hit
Prevalence 3.5%

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.

MPEQYRYSLPVKAGDQRQLGELTGAACATLVAEMAERHKGPVVLVAPDMQNALRLNDEIRQFTDSMVMGLADWETLPYDSFSPHQDIISSRLATLYQLPTMQRGVLIVPVSTLMQRVCPHSFLHGHALVMKKGQRLSRDALRDQLEGAGYRHVDQVMEHGEYATRGALLDLFPMGSDQPYRLDFFDDEIDSLRLFDVDSQRTLEEVAAINLLPAHEFPTDQTAIELFRSQWRDRFEVKRDAEHIYQQVSKGTLPAGIEYWQPLFFSEPLPPLFSYFPASTLIVNTGDLEASAERFQNEARARFENRGVDPMRPLLPPELLWLRSDELFSELKKWPRVQLKTERLADKAANTNLGYQTLPDLAVQAQNKAPLDNLRRFLESFTGPVIFSVESEGRREALSEMLARIKVAPKHVLRLEEATGNGRYLMIGAAEHGFIDSQRGLALICESDLLGERVARRRQDSRRTINPDTLIRNLAELHIGQPVVHLEHGVGRYAGMTTLEAGGITGEYLMLTYANDAKLYVPVSSLHLISRYAGGAEENAPLHKLGGDAWTRARQKAAEKVRDVAAELLDIYAQRAAKAGFAFKHDREQYQLFCDGFPFETTPDQAQAINAVLSDMCQPLAMDRLVCGDVGFGKTEVAMRAAFLAVENHKQVAVLVPTTLLAQQHYDNFRDRFANWPVRIEMLSRFRSAKEQAQILEQAAEGKIDILIGTHKLLQSEVKLRDLGLLIVDEEHRFGVRHKERIKAMRADVDILTLTATPIPRTLNMAMSGMRDLSIIATPPARRLAVKTFVREYDALVVREAILRETLRGGQVYYLFNDVENIQKAADKLAELVPEARIAIGHGQMRERELERVMNDFHHQRFNVLVCTTIIETGIDIPTANTIIIERADHFGLAQLHQLRGRVGRSHHQAYAWLLTPHPKAMTTDAQKRLEAIASLEDLGAGFALATHDLEIRGAGELLGEDQSGQMETIGFSLYMELLENAVDALKAGREPSLEDLTSQQTEVELRMPSLLPDDFIPDVNTRLSFYKRIASAKNEQDLEEIKVELIDRFGRLPDAARNLLDIARLRQQAQKLGIRKLESNEKGGVIEFNEKNNVNPVWLIGLLQKQPQHFRLDGPTRLKFMQDLEERKTRMDWVRQFMRQLEENAVA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 9 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

9
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0006281 The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.
  • GO:0003676 Binding to a nucleic acid.
  • GO:0003684 Binding to damaged DNA.
  • GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
  • GO:0003678 Unwinding of a DNA helix, driven by ATP hydrolysis.
  • GO:0016787 Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc.
  • GO:0006355 Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
  • GO:0000716 The identification of lesions on the actively transcribed strand of the DNA duplex as well as a small subset of lesions not recognized by the general nucleotide-excision repair pathway.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

57 records
Show feature table
Start End DB Term Name
1006 1097 Pfam PF03461 TRCF domain
1006 1097 InterPro IPR005118 Transcription-repair-coupling factor, C-terminal domain
475 987 Gene3D G3DSA:3.40.50.300 -
475 987 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
9 340 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
9 340 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
577 984 PANTHER PTHR47964 ATP-DEPENDENT DNA HELICASE HOMOLOG RECG, CHLOROPLASTIC
577 984 InterPro IPR047112 ATP-dependent DNA helicase RecG/Transcription-repair-coupling factor
148 1079 NCBIfam TIGR00580 transcription-repair coupling factor
148 1079 InterPro IPR004576 Transcription-repair coupling factor
128 213 FunFam G3DSA:3.30.2060.10:FF:000002 Transcription-repair-coupling factor
520 780 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
520 780 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
24 335 Gene3D G3DSA:3.40.50.11180 -
480 538 Gene3D G3DSA:2.40.10.170 -
1005 1105 SMART SM00982 TRCF_a_2_a
1005 1105 InterPro IPR005118 Transcription-repair-coupling factor, C-terminal domain
797 951 ProSiteProfiles PS51194 Superfamilies 1 and 2 helicase C-terminal domain profile.
797 951 InterPro IPR001650 Helicase, C-terminal
477 572 Pfam PF02559 CarD-like/TRCF domain
477 572 InterPro IPR003711 CarD-like/TRCF, RNAP-interacting domain
129 217 Pfam PF17757 UvrB interaction domain
129 217 InterPro IPR041471 UvrB, interaction domain
467 545 SUPERFAMILY SSF141259 CarD-like
467 545 InterPro IPR036101 CarD-like/TRCF, RNAP-interacting domain superfamily
476 573 SMART SM01058 CarD_TRCF_2
476 573 InterPro IPR003711 CarD-like/TRCF, RNAP-interacting domain
615 776 ProSiteProfiles PS51192 Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile.
615 776 InterPro IPR014001 Helicase superfamily 1/2, ATP-binding domain
354 450 Gene3D G3DSA:3.40.50.11140 -
777 987 FunFam G3DSA:3.40.50.300:FF:000300 Transcription-repair-coupling factor
1001 1148 FunFam G3DSA:3.90.1150.50:FF:000001 Transcription-repair-coupling factor
992 1144 SUPERFAMILY SSF143517 TRCF domain-like
992 1144 InterPro IPR037235 TRCF-like, C-terminal D7 domain
597 787 SMART SM00487 ultradead3
597 787 InterPro IPR014001 Helicase superfamily 1/2, ATP-binding domain
539 776 FunFam G3DSA:3.40.50.300:FF:000546 Transcription-repair-coupling factor
586 778 CDD cd17991 DEXHc_TRCF
802 906 Pfam PF00271 Helicase conserved C-terminal domain
802 906 InterPro IPR001650 Helicase, C-terminal
779 987 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
779 987 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
602 762 Pfam PF00270 DEAD/DEAH box helicase
602 762 InterPro IPR011545 DEAD/DEAH box helicase domain
28 1127 Hamap MF_00969 Transcription-repair-coupling factor [mfd].
28 1127 InterPro IPR004576 Transcription-repair coupling factor
539 778 Gene3D G3DSA:3.40.50.300 -
539 778 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
785 935 CDD cd18810 SF2_C_TRCF
1001 1148 Gene3D G3DSA:3.90.1150.50 -
1001 1148 InterPro IPR037235 TRCF-like, C-terminal D7 domain
823 907 SMART SM00490 helicmild6
823 907 InterPro IPR001650 Helicase, C-terminal
351 463 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
351 463 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
128 213 Gene3D G3DSA:3.30.2060.10 -
480 538 FunFam G3DSA:2.40.10.170:FF:000007 Transcription-repair-coupling factor

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
0.901
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Surrounding area
Pocket 2 P2Rank #2
0.561
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Surrounding area
Pocket 3 P2Rank #3
0.55
Likely same site as FPocket 95 3.9 Å 12 shared residues 86% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.418
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Surrounding area
Pocket 5 P2Rank #5
0.342
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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 #95
0.894
Likely same site as P2Rank 3 3.9 Å 12 shared residues 86% of smaller site
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Surrounding area
Pocket 2 FPocket #104
0.469 Unusual size
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Surrounding area
Pocket 3 FPocket #59
0.257
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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_A0A0H3GMV4
AlphaFold DB full sequence Viewing
ColabFold VK055_1352
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.