KpATCC43816 Protein target profile

histidine--tRNA ligase

Accession: VK055_4656

Gene: hisS AIK83190.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 2 reactions UniProt A0A0H3H1G0

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Length 414

Pocket druggability (P2Rank · AlphaFold DB model) 0.87

Metabolic reactions 2

Chokepoint Yes

Direct ligand evidence 0 53 total records

Functional annotation 1 EC 4 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.

Main supporting evidence

Metabolic chokepoint Catalyzes a reaction that is the only producer or consumer of a metabolite in the imported metabolic model. No isoenzyme backup detected Imported GPR rules do not show an alternative enzyme for the catalyzed reaction set. Core gene across strains Marked as conserved by both pan-genome tools: Roary and CoreCruncher. Moderate predicted binding pocket FPocket selected-pocket score 0.65. This supports review but is not experimental validation. Review the complete evidence below

Risks to review

Evidence coverage

Core evidence streams are available for this target.

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 (%): 25.269 Lower values reduce human off-target concern.
Human E-value: 6.21e-11
Gut microbiome similarity: 5.6% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG): Y
DEG identity (%): 91.304 Higher values support similarity to known essential genes.
DEG E-value: 0.0 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT: 94.63 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) 0.87

Structure A0A0H3H1G0

Pocket Pocket 1

Druggability (FPocket) 0.645

Structure A0A0H3H1G0

Pocket Pocket 6

ColabFold model

P2Rank 0.84 · Pocket 1

FPocket 0.207 · Pocket 3

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 267 / 4744 genomes with a hit

Prevalence 5.6%

Metabolic context

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

Explore metabolic network

Attractive metabolic target: catalyzes a producing chokepoint reaction in Aminoacyl-tRNA biosynthesis, no isoenzyme backup detected.

Relative network centrality 0.0% more central than 0.0% of genes in this genome

Chokepoint Chokepoint gene

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MNDYLPGETALWQRIEGSLKQVLGSYGYSEIRLPIVEQTPLFKRAIGEVTDVVEKEMYTFEDRNGDSLTLRPEGTAGCVRAGIEHGLLYNQEQRLWYVGPMFRHERPQKGRYRQFHQIGAEVFGLQGPDIDAELIMLTARWWRELGISEHVSLELNSIGSLEARANYRDALVAYLEQFTDKLDEDSKRRMYTNPLRVLDSKNPDVQALLNDAPALGDYLDEESKAHFAGLCALLDDAGIRYTVNQRLVRGLDYYNRTVFEWVTTSLGSQGTVCAGGRYDGLVEQLGGRATPGVGFAMGLERLVLLVQAVNPEFKADPVVDIYLVASGTDTQSAAMRLAEQVRDALPGVKLMTNHGGGNFKKQFARADKWGARVALVVGESEIADGNVVVKDLRSGEQTTVTQESVAAHLRTLLG

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 4 GO

Subcellular localization

Localization: Cytoplasmic

Enzyme Commission (EC)

6.1.1.21

Gene Ontology (GO)

GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
GO:0006427 The process of coupling histidine to histidyl-tRNA, catalyzed by histidyl-tRNA synthetase. The histidyl-tRNA synthetase is a class-II synthetase. The activated amino acid is transferred to the 3''-OH group of a histidine-accetping tRNA.
GO:0004821 Catalysis of the reaction: ATP + L-histidine + tRNA(His) = AMP + diphosphate + L-histidyl-tRNA(His).
GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

27 records

Show feature table

Start	End	DB	Term	Name
316	413	FunFam	G3DSA:3.40.50.800:FF:000007	Histidine--tRNA ligase
328	410	Pfam	PF03129	Anticodon binding domain
328	410	InterPro	IPR004154	Anticodon-binding
1	413	PIRSF	PIRSF001549	His-tRNA_synth
1	413	InterPro	IPR004516	Histidine-tRNA ligase/ATP phosphoribosyltransferase regulatory subunit
1	302	Pfam	PF13393	Histidyl-tRNA synthetase
1	302	InterPro	IPR041715	Class II Histidinyl-tRNA synthetase (HisRS)-like catalytic core domain
1	312	Gene3D	G3DSA:3.30.930.10	Bira Bifunctional Protein; Domain 2
1	312	InterPro	IPR045864	Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL)
1	404	PANTHER	PTHR43707	HISTIDYL-TRNA SYNTHETASE
1	404	InterPro	IPR004516	Histidine-tRNA ligase/ATP phosphoribosyltransferase regulatory subunit
319	413	SUPERFAMILY	SSF52954	Class II aaRS ABD-related
318	410	CDD	cd00859	HisRS_anticodon
318	410	InterPro	IPR033656	Histidyl-anticodon-binding
316	413	Gene3D	G3DSA:3.40.50.800	-
316	413	InterPro	IPR036621	Anticodon-binding domain superfamily
1	313	FunFam	G3DSA:3.30.930.10:FF:000005	Histidine--tRNA ligase
8	307	CDD	cd00773	HisRS-like_core
8	307	InterPro	IPR041715	Class II Histidinyl-tRNA synthetase (HisRS)-like catalytic core domain
1	317	ProSiteProfiles	PS50862	Aminoacyl-transfer RNA synthetases class-II family profile.
1	317	InterPro	IPR006195	Aminoacyl-tRNA synthetase, class II
1	401	NCBIfam	TIGR00442	histidine--tRNA ligase
1	401	InterPro	IPR015807	Histidine-tRNA ligase
1	308	SUPERFAMILY	SSF55681	Class II aaRS and biotin synthetases
1	308	InterPro	IPR045864	Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL)
1	411	Hamap	MF_00127	Histidine--tRNA ligase [hisS].
1	411	InterPro	IPR015807	Histidine-tRNA ligase

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

0.87

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Surrounding area

Pocket 2 P2Rank #2

0.115

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Surrounding area

Pocket 3 P2Rank #3

0.089

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Surrounding area

Pocket 4 P2Rank #4

0.01

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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 #6

0.645

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Surrounding area

Pocket 2 FPocket #22

0.357

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Surrounding area

Residue sets

UniProt: Binding site:103-103

UniProt: Binding site:117-117

UniProt: Binding site:121-121

UniProt: Binding site:249-249

UniProt: Binding site:253-254

UniProt: Binding site:73-75

Binding pockets · P2Rank

Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Pocket 1 P2Rank #1

0.84

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Surrounding area

Pocket 2 P2Rank #2

0.112

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Surrounding area

Pocket 3 P2Rank #3

0.05

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Surrounding area

Pocket 4 P2Rank #4

0.044

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Surrounding area

Pocket 5 P2Rank #5

0.012

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Surrounding area

Residue sets

UniProt: Binding site:103-103

UniProt: Binding site:117-117

UniProt: Binding site:121-121

UniProt: Binding site:249-249

UniProt: Binding site:253-254

UniProt: Binding site:73-75

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_A0A0H3H1G0	AlphaFold DB	—	—	full sequence	—	Viewing
ColabFold VK055_4656	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.

53 records

Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records

Transferred evidence 3 records from similar proteins

Structural ligands 3 0 loaded crystals

Measured bioactivity 0 direct and transferred ChEMBL records

Proposed compounds 50 similarity-based ZINC candidates

Best available ligand signal

HAM PDB via homolog 484.4 Da · LogP -3.37 · TPSA 251.3 Open detail RCSB PDB

HSO PDB via homolog Detail RCSB PDB

HSS PDB via homolog Detail RCSB PDB

ZINC1083817667 ZINC proposed compound · Tanimoto 0.716 Detail ZINC

ZINC936069053 ZINC proposed compound · Tanimoto 0.716 Detail ZINC

Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in Target, use Open crystal to inspect it in the structure viewer.

No PDB structure with a co-crystallized ligand found for this exact protein.

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.

Ligand	Source crystal	UniProt (homolog)	MW · LogP · TPSA	Lipinski	PAINS	SMILES
HAM RCSB PDB	1KMM	P60906	484.4 Da LogP -3.37 TPSA 251.3	1 viol.	✓ Clean	`c1c(nc[nH]1)C[C@@H](C(=O)O[P@](=O)([O-])OC[C@@H…`
HSO RCSB PDB	1KMN	P60906	142.2 Da LogP -1.31 TPSA 76.2	✓ Ro5	✓ Clean	`c1c([nH+]c[nH]1)C[C@@H](CO)N`
HSS RCSB PDB	2EL9	P60906	483.5 Da LogP -3.30 TPSA 246.5	2 viol.	✓ Clean	`c1c([nH]cn1)C[C@@H](C(=O)NS(=O)(=O)OC[C@@H]2[C@…`

Experimental bioactivity from ChEMBL measured directly on this protein. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

No ChEMBL bioactivity data found for this exact protein.

Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

No ChEMBL hits found through similar proteins.

Proposed virtual-screening candidates from ZINC. Score = Tanimoto similarity to a known binder (0–1; higher = more similar).

Ligand	Tanimoto	MW · LogP · TPSA	Lipinski	PAINS	SMILES
ZINC1083817667 ZINC	0.716	459.5 Da LogP -2.22 TPSA 217.8	1 viol.	✓ Clean	`CC(C)C[C@@H](N)C(=O)NS(=O)(=O)OC[C@H]1O[C@@H](n…`
ZINC936069053 ZINC	0.716	459.5 Da LogP -2.22 TPSA 217.8	1 viol.	✓ Clean	`CC(C)C[C@@H](N)C(=O)NS(=O)(=O)OC[C@@H]1O[C@H](n…`
ZINC168710640 ZINC	0.707	474.5 Da LogP -4.00 TPSA 260.9	2 viol.	✓ Clean	`NC(=O)CC[C@H](N)C(=O)NS(=O)(=O)OC[C@H]1O[C@@H](…`
ZINC168710738 ZINC	0.707	474.5 Da LogP -4.00 TPSA 260.9	2 viol.	✓ Clean	`NC(=O)CC[C@H](N)C(=O)NS(=O)(=O)OC[C@H]1O[C@@H](…`
ZINC936069043 ZINC	0.671	459.5 Da LogP -2.22 TPSA 217.8	1 viol.	✓ Clean	`CC[C@@H](C)[C@@H](N)C(=O)NS(=O)(=O)OC[C@@H]1O[C…`
ZINC14967098 ZINC	0.658	403.4 Da LogP -3.64 TPSA 217.8	1 viol.	✓ Clean	`NCC(=O)NS(=O)(=O)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc…`
ZINC218033334 ZINC	0.658	403.4 Da LogP -3.64 TPSA 217.8	1 viol.	✓ Clean	`NCC(=O)NS(=O)(=O)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc…`
ZINC218033425 ZINC	0.658	403.4 Da LogP -3.64 TPSA 217.8	1 viol.	✓ Clean	`NCC(=O)NS(=O)(=O)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc…`
ZINC218033503 ZINC	0.658	403.4 Da LogP -3.64 TPSA 217.8	1 viol.	✓ Clean	`NCC(=O)NS(=O)(=O)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc…`
ZINC12405780 ZINC	0.600	346.3 Da LogP -2.75 TPSA 188.7	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COS(N)(=O)=O)[C@@H]…`
ZINC12502832 ZINC	0.600	346.3 Da LogP -2.75 TPSA 188.7	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COS(N)(=O)=O)[C@@H]…`
ZINC79460727 ZINC	0.600	346.3 Da LogP -2.75 TPSA 188.7	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COS(N)(=O)=O)[C@H](…`
ZINC79460732 ZINC	0.600	346.3 Da LogP -2.75 TPSA 188.7	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COS(N)(=O)=O)[C@H](…`
ZINC31475423 ZINC	0.592	434.3 Da LogP -2.99 TPSA 238.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](CO[P@@](=O)(O)OC(=O)…`
ZINC105372833 ZINC	0.592	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@H](O…`
ZINC105372837 ZINC	0.592	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@H](O…`
ZINC13518964 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@H](…`
ZINC1532515 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@H](O…`
ZINC1571045 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@@H]…`
ZINC17107643 ZINC	0.592	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@@H](…`
ZINC1842158 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@H](O…`
ZINC204538551 ZINC	0.592	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@@H](…`
ZINC2046931 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@H](…`
ZINC2126310 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC3201891 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@@H]…`
ZINC3201893 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@@H](…`
ZINC3830180 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@@H](…`
ZINC3860156 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC3977897 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](COP(=O)(O)O)[C@@H](O…`
ZINC4806442 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@H](O…`
ZINC8613167 ZINC	0.592	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@H](O…`
ZINC4096224 ZINC	0.583	346.2 Da LogP -1.90 TPSA 191.9	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](N)(=O)O)[C@@…`
ZINC14967079 ZINC	0.582	461.4 Da LogP -2.95 TPSA 258.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COS(=O)(=O)/N=C(\O)…`
ZINC31516918 ZINC	0.570	446.4 Da LogP -1.33 TPSA 218.2	1 viol.	✓ Clean	`CC(C)[C@H](N)C(=O)O[P@](=O)(O)OC[C@H]1O[C@@H](n…`
ZINC5615251 ZINC	0.568	375.3 Da LogP -0.55 TPSA 164.1	1 viol.	✓ Clean	`COP(=O)(OC)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc32)[C@…`
ZINC5615253 ZINC	0.568	375.3 Da LogP -0.55 TPSA 164.1	1 viol.	✓ Clean	`COP(=O)(OC)OC[C@@H]1O[C@@H](n2cnc3c(N)ncnc32)[C…`
ZINC5615258 ZINC	0.568	375.3 Da LogP -0.55 TPSA 164.1	1 viol.	✓ Clean	`COP(=O)(OC)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc32)[C@…`
ZINC5615263 ZINC	0.568	375.3 Da LogP -0.55 TPSA 164.1	1 viol.	✓ Clean	`COP(=O)(OC)OC[C@@H]1O[C@@H](n2cnc3c(N)ncnc32)[C…`
ZINC31539924 ZINC	0.561	494.4 Da LogP -0.74 TPSA 218.2	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OC(=O…`
ZINC105469665 ZINC	0.560	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)CP(=O…`
ZINC12360002 ZINC	0.560	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC13527614 ZINC	0.560	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)CP(=O)…`
ZINC1582675 ZINC	0.560	403.3 Da LogP 0.23 TPSA 164.1	1 viol.	✓ Clean	`CCOP(=O)(OCC)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc32)[…`
ZINC219330894 ZINC	0.560	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)CP(=O)…`
ZINC31977053 ZINC	0.560	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)OP(=O)…`
ZINC3873853 ZINC	0.560	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@](=O)(O)CP(=O…`
ZINC53683898 ZINC	0.560	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC5486730 ZINC	0.560	403.3 Da LogP 0.23 TPSA 164.1	1 viol.	✓ Clean	`CCOP(=O)(OCC)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc32)[…`
ZINC5486734 ZINC	0.560	403.3 Da LogP 0.23 TPSA 164.1	1 viol.	✓ Clean	`CCOP(=O)(OCC)OC[C@@H]1O[C@@H](n2cnc3c(N)ncnc32)…`
ZINC8586019 ZINC	0.560	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)OP(=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.

Sequence

UniProt A0A0H3H1G0

Pathways

KEGG R03655 BioCyc HISTIDINE--TRNA-LIGASE-RXN BioCyc RXN-23888