Protein profile

KP13_03260

Nicotinamide riboside transporter pnuC

Genome: KpKP13

Gene: pnuC AHE45639.1 Structure source: AlphaFold + ColabFold UniProt A0A2W0KGQ5

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Amino acids 239

Annotations 4

Features 27

PDB binders 2

Druggability 0.857

Overview

Basic information about this protein and its source genome.

Accession: KP13_03260
Assembly: Klebsiella pneumoniae subsp. pneumoniae Kp13, complete sequence
Gene: pnuC AHE45639.1
Status: annotated
Amino acids: 239
Structure source: AlphaFold + ColabFold

GO:0034258 The directed movement of a nicotinamide riboside, which is a pyridine-3-carboxamide covalently bonded to a ribose sugar, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it. GO:0034257 Enables the transfer of nicotinamide riboside, which is a pyridine-3-carboxamide covalently bonded to a ribose sugar, from one side of a membrane to the other. GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Target profile

Computed evidence for target prioritization.

Human off-target: No hit
Human identity (%): 0.0
Gut microbiome off-target: hit
Essential (DEG): N
DEG identity (%): 0.0
Localization: CytoplasmicMembrane
ColabFold pLDDT: 87.7

Selected Druggability evidence

AlphaFold / UniProt model

Selected Druggability is the FPocket score chosen for ranking using the curated structure priority. The 3D viewer may show a different loaded structure, so its visible pockets can differ.

FPocket 0.857

Structure A0A2W0KGQ5

Pocket Pocket 2

P2Rank 0.973

Structure A0A2W0KGQ5

Pocket Pocket 1

ColabFold model

FPocket 0.341 · Pocket 7

P2Rank 0.987 · Pocket 1

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 117 / 4744 genomes with a hit

Normalized 0.025

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Gene Ontology (GO)

GO:0034258 The directed movement of a nicotinamide riboside, which is a pyridine-3-carboxamide covalently bonded to a ribose sugar, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
GO:0034257 Enables the transfer of nicotinamide riboside, which is a pyridine-3-carboxamide covalently bonded to a ribose sugar, from one side of a membrane to the other.
GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Sequence Features

Domain/signature hits from InterPro and related databases.

27 records

Show feature table

Start	End	DB	Term	Name
209	226	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
49	68	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
1	21	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
204	208	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
23	226	Pfam	PF04973	Nicotinamide mononucleotide transporter
23	226	InterPro	IPR006419	Nicotinamide mononucleotide transporter PnuC
109	139	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
159	178	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
158	177	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
22	40	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
71	88	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
140	158	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
41	46	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
110	132	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
1	235	PANTHER	PTHR36122	NICOTINAMIDE RIBOSIDE TRANSPORTER PNUC
1	235	InterPro	IPR006419	Nicotinamide mononucleotide transporter PnuC
227	239	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
184	206	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
22	231	NCBIfam	TIGR01528	nicotinamide riboside transporter PnuC
22	231	InterPro	IPR006419	Nicotinamide mononucleotide transporter PnuC
66	70	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
179	184	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
185	203	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
20	42	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
47	65	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
89	108	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
72	89	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; predicted models typically cover the full protein.

Loading 3D structure...

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Structural evidence

0 + 2

Experimental PDB entries and predicted models. Click Switch to display a different structure in the viewer.

Entry	Method	Resolution	Chain	Coverage	Links	Status
AlphaFold AF_A0A2W0KGQ5	AlphaFold	—	—	full sequence	—	Viewing
ColabFold KP13_03260	ColabFold	—	—	full sequence	—	Loaded

Pocket details FPocket · P2Rank — toggle visibility and zoom from here, or open full viewer

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET	Sticks	Spheres	Surfaces	Druggability	Labels	Zoom	Positions
2				0.857
8				0.815
5				0.328
9				0.286

Pockets (P2RANK)

Showing top-ranked P2Rank candidates by probability. Probability is color-coded per P2Rank calibration: high (≥ 0.5), medium (0.2 – 0.49), low (< 0.2).

P2RANK	Score	Probability
1	38.37	0.96
2	2.64	0.077
3	2.34	0.061
4	2.19	0.053
5	1.69	0.029

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET	Sticks	Spheres	Surfaces	Druggability	Labels	Zoom	Positions
7				0.341

Pockets (P2RANK)

Showing top-ranked P2Rank candidates by probability. Probability is color-coded per P2Rank calibration: high (≥ 0.5), medium (0.2 – 0.49), low (< 0.2).

P2RANK	Score	Probability
1	52.58	0.982
2	2.24	0.055
3	2.14	0.05
4	1.83	0.035

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

Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in TPW, 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
BOG	4QTN	D2ZZC1	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1)CO)…`
NNR	4QTN	D2ZZC1	255.2 Da LogP -2.32 TPSA 116.9	✓ Ro5	✓ Clean	`c1cc(c[n+](c1)[C@H]2[C@@H]([C@@H]([C@H](O2)CO)O…`

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
ZINC100034925	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](…`
ZINC100050848	1.000	376.5 Da LogP 2.50 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](…`
ZINC100056252	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[…`
ZINC100622858	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O…`
ZINC100622862	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](…`
ZINC100623033	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)…`
ZINC100623036	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O…`
ZINC100623039	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)…`
ZINC100623040	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O…`
ZINC106384623	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC118906329	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[…`
ZINC118906375	1.000	264.3 Da LogP -0.62 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@H]1O`
ZINC118911500	1.000	278.3 Da LogP -0.23 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@H]…`
ZINC118911909	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@…`
ZINC140958235	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)…`
ZINC140974145	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@…`
ZINC141152247	1.000	264.3 Da LogP -0.62 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@H]…`
ZINC141261234	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C…`
ZINC141262250	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@…`
ZINC14613564	1.000	255.2 Da LogP -2.32 TPSA 116.9	✓ Ro5	✓ Clean	`NC(=O)c1ccc[n+]([C@@H]2O[C@H](CO)[C@@H](O)[C@@H…`
ZINC14880349	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[…`
ZINC14880350	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[C…`
ZINC15609263	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC1849674	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1O[C@@H](CO)[C@H](O)[C@@H](O)[C@@…`
ZINC2046837	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@H]1O[C@@H](CO)[C@H](O)[C@@H](O)[C@…`
ZINC248251557	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@@H](CO)[C@H](O)[C@@H](O)[C…`
ZINC34633968	1.000	255.2 Da LogP -2.32 TPSA 116.9	✓ Ro5	✓ Clean	`NC(=O)c1ccc[n+]([C@H]2O[C@H](CO)[C@@H](O)[C@H]2…`
ZINC40165555	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H…`
ZINC4096036	1.000	255.2 Da LogP -2.32 TPSA 116.9	✓ Ro5	✓ Clean	`NC(=O)c1ccc[n+]([C@@H]2O[C@H](CO)[C@@H](O)[C@H]…`
ZINC49878456	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[C…`
ZINC49878458	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[…`
ZINC58538417	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C…`
ZINC58563863	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]…`
ZINC65748069	1.000	255.2 Da LogP -2.32 TPSA 116.9	✓ Ro5	✓ Clean	`NC(=O)c1ccc[n+]([C@@H]2O[C@H](CO)[C@H](O)[C@H]2…`
ZINC65748073	1.000	255.2 Da LogP -2.32 TPSA 116.9	✓ Ro5	✓ Clean	`NC(=O)c1ccc[n+]([C@@H]2O[C@H](CO)[C@H](O)[C@@H]…`
ZINC66122924	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@@H…`
ZINC71788562	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC71788563	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC71788565	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C…`
ZINC71788566	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C…`
ZINC76945547	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@…`
ZINC85478989	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC85590873	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[…`
ZINC85590876	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)…`
ZINC85590883	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[…`
ZINC85590888	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)…`
ZINC85605815	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[…`
ZINC901659	1.000	255.2 Da LogP -2.32 TPSA 116.9	✓ Ro5	✓ Clean	`NC(=O)c1ccc[n+]([C@H]2O[C@@H](CO)[C@H](O)[C@@H]…`
ZINC94437834	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O`
ZINC95713698	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](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.