Protein target profile

VK055_0098

ribosomal RNA small subunit methyltransferase F

Genome: KpATCC43816 Gene: AIK78726.1 rsmF 3D evidence: AlphaFold DB model + ColabFold model Metabolism 1 reaction UniProt A0A0H3GQ38
Length 462
Pocket druggability 0.477
Metabolic reactions 1
Chokepoint No
Direct ligand evidence 0 55 total records
Functional annotation 1 EC 9 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
Hit
Human identity (%)
39.205 Lower values reduce human off-target concern.
Human E-value
6.19e-26
Gut microbiome similarity
1.9% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Localization

Localization
Cytoplasmic

Structure confidence

ColabFold pLDDT
94.54 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket 0.477
Structure A0A0H3GQ38
Pocket Pocket 9
P2Rank 0.551
Structure A0A0H3GQ38
Pocket Pocket 1
ColabFold model
FPocket 0.548 · Pocket 1
P2Rank 0.301 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 88 / 4744 genomes with a hit
Prevalence 1.9%

Cross-references

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

Metabolic context

Reactions catalyzed, pathway membership, and centrality in the genome-scale metabolic network.

Explore metabolic network
Relative network centrality 0.0% more central than 0.0% of genes in this genome
Chokepoint Not a chokepoint
Pathways

No specific KEGG pathway assigned - this reaction either has no KEGG mapping, or only matches a generic overview map with no route-level information.

Catalyzed reaction

1 reaction mapped to this gene in the metabolic model. Open the full network to see each one, with substrates/products and the reaction-reaction map.

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MRAAMPAHLSFDDFIAACQRPLRRSIRVNTLKIGVDDFLSLVAPYGWQLAPVPWCAEGFWIEREDDDALPLGSTAEHLSGLFYIQEASSMLPVAALFADNRQPERVMDVAAAPGSKTTQIAARMGNAGGILANEFSASRVKVLHANISRCGISNVALTHFDGRVFGAALPETFDAILLDAPCSGEGVVRKDADALKNWSPESNLDIAATQRELIDSAFHALRPGGTLVYSTCTLNREENQSVIEWLLSRYPQAVEILPLGELFPGAADALTAEGFLHVFPQIYDCEGFFVARLRKTAAIDPLPAPGYKVGKFPFTPLKDREAAAVTAAARAVGLEWDAGHTLWQRDKELWLFPLALEPLFGKVRFSRIGVRLAELHNKGYRWQHEAVIAFAAPQRAFELSQEEAEEWYRGRDVYPQTAPGQDETIVTFQGVPLGLAKRVGSRLKNSYPRELVRDGKLFAGKV

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 9 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

9
  • GO:0006396 Any process involved in the conversion of one or more primary RNA transcripts into one or more mature RNA molecules.
  • GO:0008649 Catalysis of the transfer of a methyl group from S-adenosyl-L-methionine to a nucleoside residue in an rRNA molecule. The methyl group can be transfered to the nucleobase or to the ribose group of the nucleoside.
  • GO:0001510 Posttranscriptional addition of a methyl group to either a nucleotide or 2'-O ribose in a polyribonucleotide. Usually uses S-adenosylmethionine as a cofactor.
  • GO:0008757 Catalysis of the transfer of a methyl group from S-adenosyl-L-methionine to a substrate.
  • GO:0008168 Catalysis of the transfer of a methyl group to an acceptor molecule.
  • GO:0003723 Binding to an RNA molecule or a portion thereof.
  • GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
  • GO:0009383 Catalysis of the transfer of a methyl group from S-adenosyl-L-methionine to cytosine to form 5-methylcytosine in small subunit ribosomal RNA.
  • GO:0070475 The addition of a methyl group to an atom in the nucleoside base portion of a nucleotide residue in an rRNA molecule.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

34 records
Show feature table
Start End DB Term Name
14 296 ProSiteProfiles PS51686 SAM-dependent MTase RsmB/NOP-type domain profile.
14 296 InterPro IPR001678 SAM-dependent methyltransferase RsmB/NOP2-type
105 230 CDD cd02440 AdoMet_MTases
26 295 NCBIfam TIGR00446 NOL1/NOP2/sun family putative RNA methylase
26 295 InterPro IPR011023 Nop2p
1 458 Hamap MF_01579 Ribosomal RNA small subunit methyltransferase F [rsmF].
1 458 InterPro IPR023545 rRNA small subunit methyltransferase F
296 462 Gene3D G3DSA:3.10.450.720 -
173 184 ProSitePatterns PS01153 NOL1/NOP2/sun family signature.
173 184 InterPro IPR018314 Bacterial Fmu (Sun)/eukaryotic nucleolar NOL1/Nop2p, conserved site
107 117 PRINTS PR02008 RNA (C5-cytosine) methyltransferase signature
107 117 InterPro IPR023267 RNA (C5-cytosine) methyltransferase
76 90 PRINTS PR02008 RNA (C5-cytosine) methyltransferase signature
76 90 InterPro IPR023267 RNA (C5-cytosine) methyltransferase
174 186 PRINTS PR02008 RNA (C5-cytosine) methyltransferase signature
174 186 InterPro IPR023267 RNA (C5-cytosine) methyltransferase
278 295 PRINTS PR02008 RNA (C5-cytosine) methyltransferase signature
278 295 InterPro IPR023267 RNA (C5-cytosine) methyltransferase
224 240 PRINTS PR02008 RNA (C5-cytosine) methyltransferase signature
224 240 InterPro IPR023267 RNA (C5-cytosine) methyltransferase
6 297 PANTHER PTHR22807 NOP2 YEAST -RELATED NOL1/NOP2/FMU SUN DOMAIN-CONTAINING
6 297 InterPro IPR023267 RNA (C5-cytosine) methyltransferase
404 453 Pfam PF13636 RNA-binding PUA-like domain of methyltransferase RsmF
404 453 InterPro IPR027391 rRNA small subunit methyltransferase F, RNA-binding PUA-like domain
1 295 Gene3D G3DSA:3.40.50.150 Vaccinia Virus protein VP39
1 295 InterPro IPR029063 S-adenosyl-L-methionine-dependent methyltransferase superfamily
1 90 Pfam PF17125 N-terminal domain of 16S rRNA methyltransferase RsmF
1 90 InterPro IPR031341 Ribosomal RNA small subunit methyltransferase F, N-terminal
10 295 SUPERFAMILY SSF53335 S-adenosyl-L-methionine-dependent methyltransferases
10 295 InterPro IPR029063 S-adenosyl-L-methionine-dependent methyltransferase superfamily
1 295 FunFam G3DSA:3.40.50.150:FF:000079 Ribosomal RNA small subunit methyltransferase F
296 462 FunFam G3DSA:3.10.450.720:FF:000001 Ribosomal RNA small subunit methyltransferase F
100 294 Pfam PF01189 16S rRNA methyltransferase RsmB/F
100 294 InterPro IPR001678 SAM-dependent methyltransferase RsmB/NOP2-type

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 · FPocket

Druggability: high ≥ 0.7 · medium 0.4–0.69 · low < 0.4

Site 1 FPocket #9
0.477
Likely same site as P2Rank 2 2.3 Å 11 shared residues 100% of smaller site
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Surrounding area
Site 2 FPocket #7
0.323
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Surrounding area

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.551
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Surrounding area
Site 2 P2Rank #2
0.129
Likely same site as FPocket 9 2.3 Å 11 shared residues 100% of smaller site
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Surrounding area
Site 3 P2Rank #3
0.114
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Surrounding area
Site 4 P2Rank #4
0.065
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Surrounding area
Site 5 P2Rank #5
0.04
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Surrounding area
Residue sets
UniProt: Active site:247-247 Nucleophile
UniProt: Binding site:125-131
UniProt: Binding site:149-149
UniProt: Binding site:176-176
UniProt: Binding site:194-194
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_A0A0H3GQ38
AlphaFold DB full sequence Viewing
ColabFold VK055_0098
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.

55 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 5 records from similar proteins
Structural ligands 1 0 loaded crystals
Measured bioactivity 4 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
SFG PDB via homolog 381.4 Da · LogP -2.06 · TPSA 208.7 Open detail RCSB PDB
DXH ChEMBL via homolog · pchembl 9.69 (~0.2 nM) Detail ChEMBL
DWT ChEMBL via homolog · pchembl 6.44 (~363.1 nM) Detail ChEMBL
CHEMBL5565987 ChEMBL via homolog Detail ChEMBL
CHEMBL5566600 ChEMBL via homolog Detail ChEMBL

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
SFG RCSB PDB O57712 381.4 Da LogP -2.06 TPSA 208.7 2 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.