Protein profile

VK055_0379

CRISPR-associated helicase Cas3

Genome: KpATCC43816

Gene: cas3 AIK79005.1 Structure source: AlphaFold + ColabFold UniProt A0A9J6S524

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Amino acids 798

Annotations 8

Features 23

PDB binders 2

Druggability 0.687

Overview

Basic information about this protein and its source genome.

Accession: VK055_0379
Assembly: Klebsiella pneumoniae subsp. pneumoniae strain ATCC 43816 KPPR1, complete genome
Gene: cas3 AIK79005.1
Status: annotated
Amino acids: 798
Structure source: AlphaFold + ColabFold

GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator. GO:0003676 Binding to a nucleic acid. GO:0016787 Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. GO:0046872 Binding to a metal ion. GO:0004518 Catalysis of the cleavage of ester linkages within nucleic acids. GO:0003723 Binding to an RNA molecule or a portion thereof.

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: Cytoplasmic
ColabFold pLDDT: 88.07

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 0.687

Structure A0A9J6S524

Pocket Pocket 1

P2Rank 0.701

Structure A0A9J6S524

Pocket Pocket 1

ColabFold model

FPocket 0.152 · Pocket 65

P2Rank 0.657 · Pocket 1

Core conservation Accessory gene

Roary accessory

CoreCruncher accessory

Gut microbiome 2 / 4744 genomes with a hit

Normalized 0

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

8 GO

Gene Ontology (GO)

GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
GO:0003676 Binding to a nucleic acid.
GO:0016787 Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc.
GO:0046872 Binding to a metal ion.
GO:0004518 Catalysis of the cleavage of ester linkages within nucleic acids.
GO:0003723 Binding to an RNA molecule or a portion thereof.
GO:0003724 Unwinding of an RNA helix, driven by ATP hydrolysis.
GO:0051607 Reactions triggered in response to the presence of a virus that act to protect the cell or organism.

Sequence Features

Domain/signature hits from InterPro and related databases.

23 records

Show feature table

Start	End	DB	Term	Name
2	141	CDD	cd09641	Cas3''_I
176	385	Gene3D	G3DSA:3.40.50.300	-
176	385	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
186	370	Pfam	PF00270	DEAD/DEAH box helicase
186	370	InterPro	IPR011545	DEAD/DEAH box helicase domain
198	376	CDD	cd17930	DEXHc_cas3
453	542	SMART	SM00490	helicmild6
453	542	InterPro	IPR001650	Helicase, C-terminal
200	543	SUPERFAMILY	SSF52540	P-loop containing nucleoside triphosphate hydrolases
200	543	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
201	546	NCBIfam	TIGR01587	CRISPR-associated helicase Cas3'
201	546	InterPro	IPR006474	Helicase Cas3, CRISPR-associated, core
1	134	ProSiteProfiles	PS51643	HD Cas3-type domain profile.
1	134	InterPro	IPR006483	CRISPR-associated Cas3-type HD domain
1	175	Gene3D	G3DSA:1.10.3210.30	-
1	175	InterPro	IPR038257	CRISPR-associated Cas3-type HD domain superfamily
3	138	Pfam	PF18019	HD domain
3	138	InterPro	IPR006483	CRISPR-associated Cas3-type HD domain
110	545	PANTHER	PTHR47963	DEAD-BOX ATP-DEPENDENT RNA HELICASE 47, MITOCHONDRIAL
180	404	SMART	SM00487	ultradead3
180	404	InterPro	IPR014001	Helicase superfamily 1/2, ATP-binding domain
405	574	Gene3D	G3DSA:3.40.50.300	-
405	574	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase

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_A0A9J6S524	AlphaFold	—	—	full sequence	—	Viewing
ColabFold VK055_0379	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
68				0.212
70				0.131
55				0.004
66				0.0

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	16.46	0.701
2	15.11	0.663
3	13.94	0.621
4	8.62	0.393
5	7.13	0.31

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
54				0.04
67				0.003
61				0.0
71				0.0

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	14.94	0.657
2	13.96	0.622
3	11.71	0.538
4	7.45	0.329
5	4.58	0.163

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
ANP	4QQZ	Q47PJ0	506.2 Da LogP -2.06 TPSA 281.9	3 viol.	✓ Clean	`c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…`
DTP	4Q2D	D1CGD0	491.2 Da LogP -0.60 TPSA 258.9	2 viol.	✓ Clean	`c1nc(c2c(n1)n(cn2)[C@H]3C[C@@H]([C@H](O3)CO[P@]…`

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
ZINC13434879	1.000	491.2 Da LogP -0.60 TPSA 258.9	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@H](O)[C@H](CO[P@@](=O)…`
ZINC13434881	1.000	491.2 Da LogP -0.60 TPSA 258.9	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@H](O)[C@H](CO[P@@](=O)(…`
ZINC13434883	1.000	491.2 Da LogP -0.60 TPSA 258.9	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@@H](O)[C@H](CO[P@@](=O…`
ZINC13434884	1.000	491.2 Da LogP -0.60 TPSA 258.9	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@@H](O)[C@H](CO[P@@](=O)…`
ZINC8215662	1.000	491.2 Da LogP -0.60 TPSA 258.9	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@H](O)[C@@H](CO[P@@](=O)…`
ZINC8664605	1.000	491.2 Da LogP -0.60 TPSA 258.9	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@H](O)[C@@H](CO[P@@](=O…`
ZINC12495199	0.981	411.2 Da LogP -0.72 TPSA 212.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@H](O)[C@@H](CO[P@@](=O…`
ZINC13434873	0.981	411.2 Da LogP -0.72 TPSA 212.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@H](O)[C@H](CO[P@@](=O)…`
ZINC13434875	0.981	411.2 Da LogP -0.72 TPSA 212.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@H](O)[C@H](CO[P@@](=O)(…`
ZINC13434876	0.981	411.2 Da LogP -0.72 TPSA 212.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@@H](O)[C@H](CO[P@](=O)…`
ZINC13434878	0.981	411.2 Da LogP -0.72 TPSA 212.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@@H](O)[C@H](CO[P@@](=O)…`
ZINC8215728	0.981	411.2 Da LogP -0.72 TPSA 212.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@H](O)[C@@H](CO[P@@](=O)…`
ZINC196576711	0.842	490.2 Da LogP -0.63 TPSA 264.7	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@H](N)[C@H](CO[P@@](=O)…`
ZINC12958401	0.833	331.2 Da LogP -0.83 TPSA 165.8	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@@H](O)[C@@H](COP(=O)(O)…`
ZINC13538980	0.833	331.2 Da LogP -0.83 TPSA 165.8	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@@H](O)[C@@H](COP(=O)(O…`
ZINC13538982	0.833	331.2 Da LogP -0.83 TPSA 165.8	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@H](O)[C@@H](COP(=O)(O)…`
ZINC1532626	0.833	331.2 Da LogP -0.83 TPSA 165.8	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@@H](O)[C@H](COP(=O)(O)…`
ZINC1713574	0.833	331.2 Da LogP -0.83 TPSA 165.8	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@H](O)[C@@H](COP(=O)(O)O…`
ZINC3869813	0.833	331.2 Da LogP -0.83 TPSA 165.8	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1C[C@H](O)[C@H](COP(=O)(O)O…`
ZINC3869814	0.833	331.2 Da LogP -0.83 TPSA 165.8	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@H](O)[C@H](COP(=O)(O)O)…`
ZINC3869815	0.833	331.2 Da LogP -0.83 TPSA 165.8	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1C[C@@H](O)[C@H](COP(=O)(O)O…`
ZINC12501218	0.733	491.2 Da LogP -0.60 TPSA 258.9	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)O[P@@…`
ZINC12501706	0.733	475.2 Da LogP 0.43 TPSA 238.7	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1CC[C@@H](CO[P@](=O)(O)O[P@@…`
ZINC12501708	0.733	475.2 Da LogP 0.43 TPSA 238.7	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1CC[C@H](CO[P@@](=O)(O)O[P@…`
ZINC13540909	0.733	491.2 Da LogP -0.60 TPSA 258.9	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)O[P@@…`
ZINC12360002	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC12360703	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC12503599	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC16546165	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](CO[P@](=O)(O)OP(=O)(…`
ZINC31977053	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)OP(=O)…`
ZINC4806433	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC53683898	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC8586019	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)OP(=O)…`
ZINC8586020	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC8586021	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@@](=O)(O)OP(=O…`
ZINC8586022	0.729	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC13518964	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@H](…`
ZINC1532515	0.607	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	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@@H]…`
ZINC1842158	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@H](O…`
ZINC2046931	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@H](…`
ZINC2126310	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC3201891	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@@H]…`
ZINC3201893	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@@H](…`
ZINC3830180	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@@H](…`
ZINC3860156	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC3977897	0.607	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	0.607	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	0.607	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@H](O…`
ZINC79671663	0.603	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)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.