Protein profile

VK055_4600

srmB, DEAD-box RNA helicase

Genome: KpATCC43816

Gene: AIK83134.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GWV4

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Amino acids 443

Annotations 7

Features 31

PDB binders 8

Druggability 0.181

Overview

Basic information about this protein and its source genome.

Accession: VK055_4600
Assembly: Klebsiella pneumoniae subsp. pneumoniae strain ATCC 43816 KPPR1, complete genome
Gene: AIK83134.1
Status: annotated
Amino acids: 443
Structure source: AlphaFold + ColabFold

3.6.4.13

GO:0000027 The aggregation, arrangement and bonding together of constituent RNAs and proteins to form the large ribosomal subunit. GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator. GO:0003676 Binding to a nucleic acid. GO:0003724 Unwinding of an RNA helix, driven by ATP hydrolysis. GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. GO:0016887 Catalysis of the reaction: ATP + H2O = ADP + H+ phosphate. ATP hydrolysis is used in some reactions as an energy source, for example to catalyze a reaction or drive transport against a concentration gradient.

Target profile

Computed evidence for target prioritization.

Human off-target: hit
Human identity (%): 56.452
Human E-value: 2.89e-14
Gut microbiome off-target: hit
Essential (DEG): Y
DEG identity (%): 90.766
DEG E-value: 0.0
Localization: Cytoplasmic
ColabFold pLDDT: 85.79

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 0.181

Structure A0A0H3GWV4

Pocket Pocket 7

P2Rank 0.85

Structure A0A0H3GWV4

Pocket Pocket 1

ColabFold model

FPocket 0.566 · Pocket 33

P2Rank 0.919 · Pocket 1

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 146 / 4744 genomes with a hit

Normalized 0.031

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 6 GO

Enzyme Commission (EC)

3.6.4.13

Gene Ontology (GO)

GO:0000027 The aggregation, arrangement and bonding together of constituent RNAs and proteins to form the large ribosomal subunit.
GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
GO:0003676 Binding to a nucleic acid.
GO:0003724 Unwinding of an RNA helix, driven by ATP hydrolysis.
GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
GO:0016887 Catalysis of the reaction: ATP + H2O = ADP + H+ phosphate. ATP hydrolysis is used in some reactions as an energy source, for example to catalyze a reaction or drive transport against a concentration gradient.

Sequence Features

Domain/signature hits from InterPro and related databases.

31 records

Show feature table

Start	End	DB	Term	Name
222	352	CDD	cd18787	SF2_C_DEAD
411	426	MobiDBLite	mobidb-lite	consensus disorder prediction
219	388	Gene3D	G3DSA:3.40.50.300	-
219	388	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
219	388	FunFam	G3DSA:3.40.50.300:FF:000555	ATP-dependent RNA helicase SrmB
382	443	MobiDBLite	mobidb-lite	consensus disorder prediction
28	198	Pfam	PF00270	DEAD/DEAH box helicase
28	198	InterPro	IPR011545	DEAD/DEAH box helicase domain
262	343	SMART	SM00490	helicmild6
262	343	InterPro	IPR001650	Helicase, C-terminal
1	213	FunFam	G3DSA:3.40.50.300:FF:000291	ATP-dependent RNA helicase SrmB
5	412	PANTHER	PTHR47959	ATP-DEPENDENT RNA HELICASE RHLE-RELATED
4	427	Hamap	MF_00967	ATP-dependent RNA helicase SrmB [srmB].
4	427	InterPro	IPR028621	ATP-dependent RNA helicase SrmB
235	343	Pfam	PF00271	Helicase conserved C-terminal domain
235	343	InterPro	IPR001650	Helicase, C-terminal
234	387	ProSiteProfiles	PS51194	Superfamilies 1 and 2 helicase C-terminal domain profile.
234	387	InterPro	IPR001650	Helicase, C-terminal
23	223	SMART	SM00487	ultradead3
23	223	InterPro	IPR014001	Helicase superfamily 1/2, ATP-binding domain
1	213	Gene3D	G3DSA:3.40.50.300	-
1	213	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
76	358	SUPERFAMILY	SSF52540	P-loop containing nucleoside triphosphate hydrolases
76	358	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
20	211	CDD	cd00268	DEADc
155	163	ProSitePatterns	PS00039	DEAD-box subfamily ATP-dependent helicases signature.
155	163	InterPro	IPR000629	ATP-dependent RNA helicase DEAD-box, conserved site
4	32	ProSiteProfiles	PS51195	DEAD-box RNA helicase Q motif profile.
4	32	InterPro	IPR014014	RNA helicase, DEAD-box type, Q motif
35	209	ProSiteProfiles	PS51192	Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile.
35	209	InterPro	IPR014001	Helicase superfamily 1/2, ATP-binding domain

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_A0A0H3GWV4	AlphaFold	—	—	full sequence	—	Viewing
ColabFold VK055_4600	ColabFold	—	—	full sequence	—	Loaded

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

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	12.45	0.651
2	4.36	0.182
3	1.61	0.026
4	1.58	0.025

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
33				0.566
11				0.544

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	18.29	0.819
2	3.54	0.13
3	1.76	0.032
4	1.19	0.01
5	1.0	0.005

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.

58 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
8OD	3NBF	Q72GF3	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`c1nc(c2c(n1)N(C(=O)N2)[C@H]3[C@@H]([C@@H]([C@H]…`
8OP	3MWK	Q72GF3	363.2 Da LogP -2.57 TPSA 206.0	1 viol.	✓ Clean	`c1nc(c2c(n1)N(C(=O)N2)[C@H]3[C@@H]([C@@H]([C@H]…`
8OX	3MWL	Q72GF3	283.2 Da LogP -2.69 TPSA 159.5	✓ Ro5	✓ Clean	`c1nc(c2c(n1)N(C(=O)N2)[C@H]3[C@@H]([C@@H]([C@H]…`
ANP	4D25	O01378	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)…`
BEF	6UV1	Q92841	66.0 Da LogP 0.88 TPSA 0.0	✓ Ro5	✓ Clean	`[Be-](F)(F)F`
CXS	4NHO	Q9BUQ8	221.3 Da LogP 1.19 TPSA 66.4	✓ Ro5	✓ Clean	`C1CCC(CC1)NCCCS(=O)(=O)O`
IHP	6QX9	Q9BUQ8	660.0 Da LogP -3.13 TPSA 400.6	3 viol.	✓ Clean	`C1(C(C(C(C(C1OP(=O)(O)O)OP(=O)(O)O)OP(=O)(O)O)O…`
M7M	6QX9	Q9BUQ8	487.3 Da LogP -2.28 TPSA 218.4	2 viol.	✓ Clean	`CN1CN(C2=C1C(=O)N=C(N2)N(C)C)[C@H]3[C@@H]([C@@H…`

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
ZINC2004372	1.000	221.3 Da LogP 1.19 TPSA 66.4	✓ Ro5	✓ Clean	`O=S(=O)(O)CCCNC1CCCCC1`
ZINC38364153	0.926	235.3 Da LogP 1.58 TPSA 66.4	✓ Ro5	✓ Clean	`O=S(=O)(O)CCCCNC1CCCCC1`
ZINC16546165	0.810	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](CO[P@](=O)(O)OP(=O)(…`
ZINC1710230	0.786	207.3 Da LogP 0.80 TPSA 66.4	✓ Ro5	✓ Clean	`O=S(=O)(O)CCNC1CCCCC1`
ZINC113264413	0.778	317.4 Da LogP 3.98 TPSA 63.3	✓ Ro5	✓ Clean	`N[C@@H](Cc1ccc(-c2ccc(-c3ccccc3)cc2)cc1)C(=O)O`
ZINC113264415	0.778	317.4 Da LogP 3.98 TPSA 63.3	✓ Ro5	✓ Clean	`N[C@H](Cc1ccc(-c2ccc(-c3ccccc3)cc2)cc1)C(=O)O`
ZINC2244337	0.778	241.3 Da LogP 2.31 TPSA 63.3	✓ Ro5	✓ Clean	`N[C@@H](Cc1ccc(-c2ccccc2)cc1)C(=O)O`
ZINC2244338	0.778	241.3 Da LogP 2.31 TPSA 63.3	✓ Ro5	✓ Clean	`N[C@H](Cc1ccc(-c2ccccc2)cc1)C(=O)O`
ZINC104199549	0.771	265.2 Da LogP -1.64 TPSA 131.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1[nH]c(=O)n2[C@H]1O[C@@H](CO)[C@@H]2O[…`
ZINC104199552	0.771	265.2 Da LogP -1.64 TPSA 131.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1[nH]c(=O)n2[C@@H]1O[C@@H](CO)[C@@H]2O…`
ZINC1566227	0.771	265.2 Da LogP -1.64 TPSA 131.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1[nH]c(=O)n2[C@H]1O[C@@H](CO)[C@@H]2O[…`
ZINC5389846	0.771	265.2 Da LogP -1.64 TPSA 131.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1[nH]c(=O)n2[C@@H]1O[C@@H](CO)[C@@H]2O…`
ZINC1834294	0.769	252.3 Da LogP -0.40 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@@H](Cc1cccc(C[C@H](N)C(=O)O)c1)C(=O)O`
ZINC1834295	0.769	252.3 Da LogP -0.40 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@@H](Cc1cccc(C[C@@H](N)C(=O)O)c1)C(=O)O`
ZINC1834297	0.769	252.3 Da LogP -0.40 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@H](Cc1cccc(C[C@@H](N)C(=O)O)c1)C(=O)O`
ZINC39351856	0.731	328.4 Da LogP 1.26 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@@H](Cc1ccc(-c2ccc(C[C@H](N)C(=O)O)cc2)cc1)C…`
ZINC4096224	0.729	346.2 Da LogP -1.90 TPSA 191.9	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](N)(=O)O)[C@@…`
ZINC2561081	0.724	269.3 Da LogP 1.87 TPSA 80.4	✓ Ro5	✓ Clean	`N[C@H](Cc1ccc(C(=O)c2ccccc2)cc1)C(=O)O`
ZINC2561082	0.724	269.3 Da LogP 1.87 TPSA 80.4	✓ Ro5	✓ Clean	`N[C@@H](Cc1ccc(C(=O)c2ccccc2)cc1)C(=O)O`
ZINC13556870	0.722	420.1 Da LogP -3.48 TPSA 261.0	1 viol.	✓ Clean	`O=P(O)(O)O[C@H]1[C@@H](O)[C@@H](O)[C@H](O)[C@@H…`
ZINC71789368	0.722	420.1 Da LogP -3.48 TPSA 261.0	1 viol.	✓ Clean	`O=P(O)(O)O[C@H]1[C@H](OP(=O)(O)O)[C@@H](O)[C@H]…`
ZINC71792243	0.722	420.1 Da LogP -3.48 TPSA 261.0	1 viol.	✓ Clean	`O=P(O)(O)O[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H…`
ZINC105372833	0.712	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	0.712	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@H](O…`
ZINC17107643	0.712	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@@H](…`
ZINC204538551	0.712	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@@H](…`
ZINC100015956	0.706	420.1 Da LogP -3.48 TPSA 261.0	1 viol.	✓ Clean	`O=P(O)(O)O[C@H]1[C@H](O)[C@@H](OP(=O)(O)O)[C@H]…`
ZINC100015959	0.706	420.1 Da LogP -3.48 TPSA 261.0	1 viol.	✓ Clean	`O=P(O)(O)O[C@H]1[C@H](O)[C@@H](OP(=O)(O)O)[C@H]…`
ZINC100016166	0.706	340.1 Da LogP -3.60 TPSA 214.4	1 viol.	✓ Clean	`O=P(O)(O)O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](OP(=O…`
ZINC100590871	0.706	420.1 Da LogP -3.48 TPSA 261.0	1 viol.	✓ Clean	`O=P(O)(O)O[C@H]1[C@H](O)[C@H](OP(=O)(O)O)[C@H](…`
ZINC1501016356	0.706	420.1 Da LogP -3.48 TPSA 261.0	1 viol.	✓ Clean	`O=P(O)(O)OC1C(O)[C@H](OP(=O)(O)O)C(O)[C@H](OP(=…`
ZINC31475423	0.703	434.3 Da LogP -2.99 TPSA 238.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](CO[P@@](=O)(O)OC(=O)…`
ZINC113539705	0.700	265.3 Da LogP 2.04 TPSA 63.3	✓ Ro5	✓ Clean	`N[C@@H](Cc1ccc(C#Cc2ccccc2)cc1)C(=O)O`
ZINC113539708	0.700	265.3 Da LogP 2.04 TPSA 63.3	✓ Ro5	✓ Clean	`N[C@H](Cc1ccc(C#Cc2ccccc2)cc1)C(=O)O`
ZINC116910786	0.700	269.3 Da LogP 3.06 TPSA 88.0	✓ Ro5	Alert	`N[C@@H](Cc1ccc(/N=N/c2ccccc2)cc1)C(=O)O`
ZINC29566843	0.700	241.3 Da LogP 2.31 TPSA 63.3	✓ Ro5	✓ Clean	`N[C@H](Cc1cccc(-c2ccccc2)c1)C(=O)O`
ZINC29570997	0.700	241.3 Da LogP 2.31 TPSA 63.3	✓ Ro5	✓ Clean	`N[C@@H](Cc1cccc(-c2ccccc2)c1)C(=O)O`
ZINC44283581	0.700	257.3 Da LogP 2.43 TPSA 72.5	✓ Ro5	✓ Clean	`N[C@@H](Cc1ccc(Oc2ccccc2)cc1)C(=O)O`
ZINC44283583	0.700	257.3 Da LogP 2.43 TPSA 72.5	✓ Ro5	✓ Clean	`N[C@H](Cc1ccc(Oc2ccccc2)cc1)C(=O)O`
ZINC105469665	0.694	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)CP(=O…`
ZINC13527614	0.694	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)CP(=O)…`
ZINC219330894	0.694	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)CP(=O)…`
ZINC3873852	0.694	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)CP(=O)…`
ZINC3873853	0.694	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@](=O)(O)CP(=O…`
ZINC3873854	0.694	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)CP(=O)…`
ZINC3873855	0.694	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@](=O)(O)CP(=O…`
ZINC2111574	0.692	252.3 Da LogP -0.40 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@@H](Cc1ccccc1C[C@H](N)C(=O)O)C(=O)O`
ZINC2111575	0.692	252.3 Da LogP -0.40 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@@H](Cc1ccccc1C[C@@H](N)C(=O)O)C(=O)O`
ZINC2111578	0.692	252.3 Da LogP -0.40 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@H](Cc1ccccc1C[C@@H](N)C(=O)O)C(=O)O`
ZINC12648269	0.690	237.3 Da LogP 0.73 TPSA 100.6	✓ Ro5	✓ Clean	`N[C@H](C[C@@H](Cc1ccccc1)C(=O)O)C(=O)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.