Protein profile

PA3903

peptide chain release factor 3

Genome: NC_002516.2

Gene: prfC PA3903 Structure source: AlphaFold UniProt Q9HXB0

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Amino acids 527

Annotations 9

Features 47

PDB binders 5

Druggability 0.229

Overview

Basic information about this protein and its source genome.

Accession: PA3903
Assembly: Pseudomonas aeruginosa PAO1, complete genome
Gene: prfC PA3903
Status: annotated
Amino acids: 527
Structure source: AlphaFold

GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. GO:0005525 Binding to GTP, guanosine triphosphate. GO:0003924 Catalysis of the reaction: GTP + H2O = GDP + H+ + phosphate. GO:0097216 Binding to guanosine tetraphosphate (5'-ppGpp-3'), a guanosine bisphosphate having diphosphate groups at both the 3' and 5'-positions. GO:0016150 A translation release factor that is not specific to particular codons; binds to guanine nucleotides. GO:0016149 A translation release factor that is specific for one or more particular termination codons; acts at the ribosomal A-site and require polypeptidyl-tRNA at the P-site.

Target profile

Computed evidence for target prioritization.

Human off-target: hit
Human identity (%): 42.857
Human E-value: 6.74e-07
Gut microbiome off-target: hit
Essential (DEG): Y
Localization: Cytoplasmic

Selected Druggability evidence

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 0.229

Structure –

Pocket –

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

9 GO

Gene Ontology (GO)

GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
GO:0005525 Binding to GTP, guanosine triphosphate.
GO:0003924 Catalysis of the reaction: GTP + H2O = GDP + H+ + phosphate.
GO:0097216 Binding to guanosine tetraphosphate (5'-ppGpp-3'), a guanosine bisphosphate having diphosphate groups at both the 3' and 5'-positions.
GO:0016150 A translation release factor that is not specific to particular codons; binds to guanine nucleotides.
GO:0016149 A translation release factor that is specific for one or more particular termination codons; acts at the ribosomal A-site and require polypeptidyl-tRNA at the P-site.
GO:0006449 Any process that modulates the frequency, rate or extent of translational termination.
GO:0006415 The process resulting in the release of a polypeptide chain from the ribosome, usually in response to a termination codon (UAA, UAG, or UGA in the universal genetic code).
GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

Sequence Features

Domain/signature hits from InterPro and related databases.

47 records

Show feature table

Start	End	DB	Term	Name
19	272	Gene3D	G3DSA:3.40.50.300	-
19	272	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
10	276	CDD	cd04169	RF3
10	276	InterPro	IPR041732	Peptide chain release factor 3, GTP-binding domain
278	387	FunFam	G3DSA:2.40.30.10:FF:000040	Peptide chain release factor 3
135	144	PRINTS	PR00315	GTP-binding elongation factor signature
135	144	InterPro	IPR000795	Translational (tr)-type GTP-binding domain
13	26	PRINTS	PR00315	GTP-binding elongation factor signature
13	26	InterPro	IPR000795	Translational (tr)-type GTP-binding domain
83	93	PRINTS	PR00315	GTP-binding elongation factor signature
83	93	InterPro	IPR000795	Translational (tr)-type GTP-binding domain
99	110	PRINTS	PR00315	GTP-binding elongation factor signature
99	110	InterPro	IPR000795	Translational (tr)-type GTP-binding domain
63	71	PRINTS	PR00315	GTP-binding elongation factor signature
63	71	InterPro	IPR000795	Translational (tr)-type GTP-binding domain
2	277	FunFam	G3DSA:3.40.50.300:FF:000542	Peptide chain release factor 3
384	511	Pfam	PF16658	Class II release factor RF3, C-terminal domain
384	511	InterPro	IPR032090	Peptide chain release factor 3, C-terminal
4	526	NCBIfam	TIGR00503	peptide chain release factor 3
4	526	InterPro	IPR004548	Peptide chain release factor 3
311	376	Pfam	PF03144	Elongation factor Tu domain 2
311	376	InterPro	IPR004161	Translation elongation factor EFTu-like, domain 2
56	71	ProSitePatterns	PS00301	Translational (tr)-type guanine nucleotide-binding (G) domain signature.
56	71	InterPro	IPR031157	Tr-type G domain, conserved site
9	277	ProSiteProfiles	PS51722	Translational (tr)-type guanine nucleotide-binding (G) domain profile.
9	277	InterPro	IPR000795	Translational (tr)-type GTP-binding domain
2	524	Hamap	MF_00072	Peptide chain release factor 3 [prfC].
2	524	InterPro	IPR004548	Peptide chain release factor 3
392	461	CDD	cd16259	RF3_III
259	390	SUPERFAMILY	SSF50447	Translation proteins
259	390	InterPro	IPR009000	Translation protein, beta-barrel domain superfamily
8	274	SUPERFAMILY	SSF52540	P-loop containing nucleoside triphosphate hydrolases
8	274	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
387	526	Gene3D	G3DSA:3.30.70.3280	Peptide chain release factor 3, domain III
387	526	InterPro	IPR038467	Peptide chain release factor 3, domain III superfamily
12	375	Gene3D	G3DSA:3.40.50.300	-
12	375	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
390	465	SUPERFAMILY	SSF54980	EF-G C-terminal domain-like
390	465	InterPro	IPR035647	EF-G domain III/V-like
13	146	NCBIfam	TIGR00231	small GTP-binding protein domain
13	146	InterPro	IPR005225	Small GTP-binding protein domain
293	379	CDD	cd03689	RF3_II
11	274	Pfam	PF00009	Elongation factor Tu GTP binding domain
11	274	InterPro	IPR000795	Translational (tr)-type GTP-binding domain
2	526	PANTHER	PTHR43556	PEPTIDE CHAIN RELEASE FACTOR RF3
2	526	InterPro	IPR004548	Peptide chain release factor 3
387	526	FunFam	G3DSA:3.30.70.3280:FF:000001	Peptide chain release factor 3

3D Structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; predicted models typically cover the full protein.

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Structural evidence

0 + 1

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

Entry	Method	Resolution	Chain	Coverage	Links	Status
AlphaFold PA3903	AlphaFold	—	—	full sequence	—	Viewing

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
3				0.229

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.

57 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	6YDP	Q96RP9	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…`
G4P	3VR1	B8DIL5	603.2 Da LogP -2.22 TPSA 345.6	3 viol.	✓ Clean	`c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=O…`
GCP	4V8O	B1XFI4	521.2 Da LogP -2.22 TPSA 289.9	3 viol.	✓ Clean	`c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=O…`
GNP	4V85	P0A7I4	522.2 Da LogP -2.76 TPSA 301.9	3 viol.	✓ Clean	`c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=O…`
SPM	6YDP	Q96RP9	202.3 Da LogP -0.36 TPSA 76.1	✓ Ro5	✓ Clean	`C(CCNCCCN)CNCCCN`

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).

Ligand	UniProt (homolog)	pchembl	MW · LogP · TPSA	Lipinski	PAINS	SMILES
CHEMBL1256987	P68790	—	538.7 Da LogP 1.34 TPSA 106.9	1 viol.	✓ Clean	`CC(=O)O[C@H]1C[C@@]2(C)[C@@H](C[C@@H](O)[C@H]3[…`
FUA	P68790	—	516.7 Da LogP 5.67 TPSA 104.1	2 viol.	✓ Clean	`C[C@H]1[C@@H]2CC[C@]3([C@H]([C@]2(CC[C@H]1O)C)[…`

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)[…`
ZINC1532734	1.000	202.3 Da LogP -0.36 TPSA 76.1	✓ Ro5	✓ Clean	`NCCCNCCCCNCCCN`
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)[…`
ZINC27564039	0.867	202.3 Da LogP -0.36 TPSA 76.1	✓ Ro5	✓ Clean	`NCCCCNCCCNCCCN`
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)(…`
ZINC13377742	0.857	230.4 Da LogP 0.42 TPSA 76.1	✓ Ro5	✓ Clean	`NCCCCNCCCCNCCCCN`
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)(…`
ZINC34541308	0.850	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)(…`
ZINC1598087	0.800	215.4 Da LogP 1.61 TPSA 64.1	✓ Ro5	✓ Clean	`NCCCCCCNCCCCCCN`
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(…`

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.