Protein profile

KP13_31491

Polyribonucleotide nucleotidyltransferase

Genome: KpKP13

Gene: AHE42512.1 pnp Structure source: AlphaFold + ColabFold UniProt A0A0H3GY04

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Amino acids 711

Annotations 9

Features 60

PDB binders 5

Druggability 0.435

Overview

Basic information about this protein and its source genome.

Accession: KP13_31491
Assembly: Klebsiella pneumoniae subsp. pneumoniae Kp13, complete sequence
Gene: AHE42512.1 pnp
Status: annotated
Amino acids: 711
Structure source: AlphaFold + ColabFold

2.7.7.8

GO:0004654 Catalysis of the reaction: RNA(n+1) + phosphate = RNA(n) + a nucleoside diphosphate. GO:0003676 Binding to a nucleic acid. GO:0006396 Any process involved in the conversion of one or more primary RNA transcripts into one or more mature RNA molecules. GO:0003723 Binding to an RNA molecule or a portion thereof. GO:0006402 The chemical reactions and pathways resulting in the breakdown of mRNA, messenger RNA, which is responsible for carrying the coded genetic 'message', transcribed from DNA, to sites of protein assembly at the ribosomes. GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

Target profile

Computed evidence for target prioritization.

Human off-target: hit
Human identity (%): 44.578
Human E-value: 2.39e-08
Gut microbiome off-target: hit
Essential (DEG): Y
DEG identity (%): 96.062
DEG E-value: 0.0
Localization: Cytoplasmic
ColabFold pLDDT: 93.13

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 0.435

Structure A0A0H3GY04

Pocket Pocket 11

P2Rank 0.878

Structure A0A0H3GY04

Pocket Pocket 1

ColabFold model

FPocket 0.088 · Pocket 27

P2Rank 0.791 · Pocket 1

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 542 / 4744 genomes with a hit

Normalized 0.114

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 8 GO

Enzyme Commission (EC)

2.7.7.8

Gene Ontology (GO)

GO:0004654 Catalysis of the reaction: RNA(n+1) + phosphate = RNA(n) + a nucleoside diphosphate.
GO:0003676 Binding to a nucleic acid.
GO:0006396 Any process involved in the conversion of one or more primary RNA transcripts into one or more mature RNA molecules.
GO:0003723 Binding to an RNA molecule or a portion thereof.
GO:0006402 The chemical reactions and pathways resulting in the breakdown of mRNA, messenger RNA, which is responsible for carrying the coded genetic 'message', transcribed from DNA, to sites of protein assembly at the ribosomes.
GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
GO:0000175 Catalysis of the sequential cleavage of mononucleotides from a free 3' terminus of an RNA molecule.
GO:0000287 Binding to a magnesium (Mg) ion.

Sequence Features

Domain/signature hits from InterPro and related databases.

60 records

Show feature table

Start	End	DB	Term	Name
145	235	SUPERFAMILY	SSF55666	Ribonuclease PH domain 2-like
145	235	InterPro	IPR036345	Exoribonuclease, PH domain 2 superfamily
5	233	CDD	cd11363	RNase_PH_PNPase_1
10	691	NCBIfam	TIGR03591	polyribonucleotide nucleotidyltransferase
10	691	InterPro	IPR012162	Polyribonucleotide nucleotidyltransferase
2	234	Gene3D	G3DSA:3.30.230.70	-
2	234	InterPro	IPR027408	PNPase/RNase PH domain superfamily
242	320	Pfam	PF03726	Polyribonucleotide nucleotidyltransferase, RNA binding domain
242	320	InterPro	IPR015848	Polyribonucleotide nucleotidyltransferase, RNA-binding domain
622	689	CDD	cd04472	S1_PNPase
226	325	SUPERFAMILY	SSF46915	Polynucleotide phosphorylase/guanosine pentaphosphate synthase (PNPase/GPSI), domain 3
226	325	InterPro	IPR036456	Polyribonucleotide nucleotidyltransferase, RNA-binding domain superfamily
550	620	Gene3D	G3DSA:3.30.1370.10	K Homology domain, type 1
550	620	InterPro	IPR036612	K Homology domain, type 1 superfamily
16	144	Pfam	PF01138	3' exoribonuclease family, domain 1
16	144	InterPro	IPR001247	Exoribonuclease, phosphorolytic domain 1
324	456	Pfam	PF01138	3' exoribonuclease family, domain 1
324	456	InterPro	IPR001247	Exoribonuclease, phosphorolytic domain 1
550	618	FunFam	G3DSA:3.30.1370.10:FF:000001	Polyribonucleotide nucleotidyltransferase
3	693	Hamap	MF_01595	Polyribonucleotide nucleotidyltransferase [pnp].
3	693	InterPro	IPR012162	Polyribonucleotide nucleotidyltransferase
622	690	ProSiteProfiles	PS50126	S1 domain profile.
622	690	InterPro	IPR003029	S1 domain
619	690	Pfam	PF00575	S1 RNA binding domain
619	690	InterPro	IPR003029	S1 domain
621	691	Gene3D	G3DSA:2.40.50.140	-
621	691	InterPro	IPR012340	Nucleic acid-binding, OB-fold
147	210	Pfam	PF03725	3' exoribonuclease family, domain 2
147	210	InterPro	IPR015847	Exoribonuclease, phosphorolytic domain 2
460	527	Pfam	PF03725	3' exoribonuclease family, domain 2
460	527	InterPro	IPR015847	Exoribonuclease, phosphorolytic domain 2
3	234	FunFam	G3DSA:3.30.230.70:FF:000001	Polyribonucleotide nucleotidyltransferase
2	698	PANTHER	PTHR11252	POLYRIBONUCLEOTIDE NUCLEOTIDYLTRANSFERASE
2	698	InterPro	IPR012162	Polyribonucleotide nucleotidyltransferase
235	549	Gene3D	G3DSA:3.30.230.70	-
235	549	InterPro	IPR027408	PNPase/RNase PH domain superfamily
689	711	MobiDBLite	mobidb-lite	consensus disorder prediction
3	144	SUPERFAMILY	SSF54211	Ribosomal protein S5 domain 2-like
3	144	InterPro	IPR020568	Ribosomal protein S5 domain 2-type fold
554	622	SUPERFAMILY	SSF54791	Eukaryotic type KH-domain (KH-domain type I)
554	622	InterPro	IPR036612	K Homology domain, type 1 superfamily
552	617	SMART	SM00322	kh_6
552	617	InterPro	IPR004087	K Homology domain
551	620	CDD	cd02393	KH-I_PNPase
1	710	PIRSF	PIRSF005499	PNPase
1	710	InterPro	IPR012162	Polyribonucleotide nucleotidyltransferase
553	612	ProSiteProfiles	PS50084	Type-1 KH domain profile.
608	692	SUPERFAMILY	SSF50249	Nucleic acid-binding proteins
608	692	InterPro	IPR012340	Nucleic acid-binding, OB-fold
450	548	SUPERFAMILY	SSF55666	Ribonuclease PH domain 2-like
450	548	InterPro	IPR036345	Exoribonuclease, PH domain 2 superfamily
235	549	FunFam	G3DSA:3.30.230.70:FF:000002	Polyribonucleotide nucleotidyltransferase
324	544	CDD	cd11364	RNase_PH_PNPase_2
622	692	FunFam	G3DSA:2.40.50.140:FF:000023	Polyribonucleotide nucleotidyltransferase
556	614	Pfam	PF00013	KH domain
556	614	InterPro	IPR004088	K Homology domain, type 1
301	492	SUPERFAMILY	SSF54211	Ribosomal protein S5 domain 2-like
301	492	InterPro	IPR020568	Ribosomal protein S5 domain 2-type fold
620	690	SMART	SM00316	S1_6
620	690	InterPro	IPR022967	RNA-binding domain, S1

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_A0A0H3GY04	AlphaFold	—	—	full sequence	—	Viewing
ColabFold KP13_31491	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
11				0.435
9				0.43
4				0.202

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	18.96	0.832
2	7.32	0.382
3	2.11	0.048
4	1.18	0.01
5	1.08	0.007

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	14.38	0.721
2	2.59	0.074
3	2.12	0.049
4	2.08	0.047

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

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
5GP	3GCM	A7ZS61	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)COP(=O)(O…`
FLC	3GCM	A7ZS61	189.1 Da LogP -5.25 TPSA 140.6	✓ Ro5	✓ Clean	`C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O`
PPV	5XEX	Q2FZ20	178.0 Da LogP -0.81 TPSA 124.3	✓ Ro5	✓ Clean	`OP(=O)(O)OP(=O)(O)O`
VGL	4NNI	P9WH43	124.1 Da LogP 0.17 TPSA 63.1	✓ Ro5	✓ Clean	`c1cnc(cn1)C(=O)O`
WO4	3H1C	P05055	247.8 Da LogP -2.62 TPSA 80.3	✓ Ro5	✓ Clean	`[O-][W](=O)(=O)[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
ZINC12501413	1.000	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](COP(=O)(O)O)[C@@H](O)…`
ZINC12958448	1.000	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](COP(=O)(O)O)[C@H](O)[…`
ZINC1532555	1.000	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](COP(=O)(O)O)[C@H](O)[…`
ZINC16546189	1.000	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](COP(=O)(O)O)[C@H](O)[…`
ZINC2159505	1.000	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](COP(=O)(O)O)[C@@H](O)…`
ZINC3073318	1.000	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](COP(=O)(O)O)[C@@H](O)…`
ZINC3869963	1.000	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](COP(=O)(O)O)[C@@H](O)…`
ZINC3869965	1.000	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@@H](COP(=O)(O)O)[C@@H](O…`
ZINC9334496	1.000	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](COP(=O)(O)O)[C@H](O)[…`
ZINC104869865	0.857	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(O…`
ZINC12504289	0.857	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(…`
ZINC34541308	0.857	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(…`
ZINC35000839	0.857	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](CO[P@@](=O)(O)OP(=O)(…`
ZINC45284491	0.857	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](CO[P@@](=O)(O)OP(=O)(…`
ZINC80639694	0.857	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(…`
ZINC8215481	0.857	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(…`
ZINC33979258	0.800	364.2 Da LogP -2.45 TPSA 200.2	1 viol.	✓ Clean	`O=c1[nH]c(O)nc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)…`
ZINC33979259	0.800	364.2 Da LogP -2.45 TPSA 200.2	1 viol.	✓ Clean	`O=c1[nH]c(O)nc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)…`
ZINC78920152	0.800	364.2 Da LogP -2.45 TPSA 200.2	1 viol.	✓ Clean	`O=c1[nH]c(O)nc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)…`
ZINC71774763	0.758	432.3 Da LogP -2.23 TPSA 198.3	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@](=O)(O)N3CCOCC3…`
ZINC12296728	0.741	347.2 Da LogP -1.54 TPSA 185.8	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@H]2C[C@@H](O)[C@@H](COP(=O)(O)O)…`
ZINC13527599	0.741	347.2 Da LogP -1.54 TPSA 185.8	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@@H]2C[C@@H](O)[C@@H](COP(=O)(O)O…`
ZINC13527603	0.741	347.2 Da LogP -1.54 TPSA 185.8	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@@H]2C[C@H](O)[C@@H](COP(=O)(O)O)…`
ZINC1532627	0.741	347.2 Da LogP -1.54 TPSA 185.8	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@@H]2C[C@@H](O)[C@H](COP(=O)(O)O)…`
ZINC1730395	0.741	347.2 Da LogP -1.54 TPSA 185.8	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@H]2C[C@H](O)[C@@H](COP(=O)(O)O)O…`
ZINC3869846	0.741	347.2 Da LogP -1.54 TPSA 185.8	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@@H]2C[C@H](O)[C@H](COP(=O)(O)O)O…`
ZINC3869847	0.741	347.2 Da LogP -1.54 TPSA 185.8	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@H]2C[C@H](O)[C@H](COP(=O)(O)O)O2…`
ZINC3869848	0.741	347.2 Da LogP -1.54 TPSA 185.8	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@H]2C[C@@H](O)[C@H](COP(=O)(O)O)O…`
ZINC4743771	0.741	361.3 Da LogP -2.70 TPSA 182.6	1 viol.	✓ Clean	`CS(=O)(=O)OC[C@H]1O[C@@H](n2cnc3c(=O)[nH]c(N)nc…`
ZINC4743772	0.741	361.3 Da LogP -2.70 TPSA 182.6	1 viol.	✓ Clean	`CS(=O)(=O)OC[C@@H]1O[C@@H](n2cnc3c(=O)[nH]c(N)n…`
ZINC4743774	0.741	361.3 Da LogP -2.70 TPSA 182.6	1 viol.	✓ Clean	`CS(=O)(=O)OC[C@H]1O[C@@H](n2cnc3c(=O)[nH]c(N)nc…`
ZINC4743775	0.741	361.3 Da LogP -2.70 TPSA 182.6	1 viol.	✓ Clean	`CS(=O)(=O)OC[C@@H]1O[C@@H](n2cnc3c(=O)[nH]c(N)n…`
ZINC14951284	0.732	348.2 Da LogP -2.15 TPSA 180.0	✓ Ro5	✓ Clean	`O=c1[nH]cnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C…`
ZINC1532551	0.732	348.2 Da LogP -2.15 TPSA 180.0	✓ Ro5	✓ Clean	`O=c1[nH]cnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@…`
ZINC16969369	0.732	348.2 Da LogP -2.15 TPSA 180.0	✓ Ro5	✓ Clean	`O=c1[nH]cnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@…`
ZINC4228242	0.732	348.2 Da LogP -2.15 TPSA 180.0	✓ Ro5	✓ Clean	`O=c1[nH]cnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@…`
ZINC4353761	0.732	348.2 Da LogP -2.15 TPSA 180.0	✓ Ro5	✓ Clean	`O=c1[nH]cnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C…`
ZINC8614392	0.732	348.2 Da LogP -2.15 TPSA 180.0	✓ Ro5	✓ Clean	`O=c1[nH]cnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C…`
ZINC12503440	0.729	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@@H](OP(=O)(O)O)…`
ZINC1530370	0.729	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@H](OP(=O)(O)O)[…`
ZINC28631009	0.729	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@H](OP(=O)(O)O)[…`
ZINC3872740	0.729	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@@H](OP(=O)(O)O)…`
ZINC3872741	0.729	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@@H](CO)[C@@H](OP(=O)(O)O…`
ZINC3872742	0.729	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@@H](OP(=O)(O)O)…`
ZINC3872743	0.729	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@@H](CO)[C@@H](OP(=O)(O)O…`
ZINC1570863	0.722	283.2 Da LogP -2.69 TPSA 159.5	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@H](CO)[C@@H](O)[C@H]2O)c(…`
ZINC38580950	0.722	282.3 Da LogP -2.72 TPSA 165.3	✓ Ro5	✓ Clean	`NC[C@H]1O[C@@H](n2cnc3c(=O)[nH]c(N)nc32)[C@H](O…`
ZINC3869969	0.722	283.2 Da LogP -2.69 TPSA 159.5	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@@H](O)[C@@H]2O)…`
ZINC4990802	0.722	282.3 Da LogP -2.72 TPSA 165.3	✓ Ro5	✓ Clean	`NC[C@@H]1O[C@@H](n2cnc3c(=O)[nH]c(N)nc32)[C@@H]…`
ZINC8613125	0.722	283.2 Da LogP -2.69 TPSA 159.5	✓ Ro5	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@H](O)[C@@H]2O)c…`

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.