Protein profile

PA3746

signal recognition particle protein Ffh

Genome: NC_002516.2

Gene: ffh PA3746 Structure source: AlphaFold UniProt Q9HXP8

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Amino acids 457

Annotations 7

Features 32

PDB binders 4

Druggability 0.626

Overview

Basic information about this protein and its source genome.

Accession: PA3746
Assembly: Pseudomonas aeruginosa PAO1, complete genome
Gene: ffh PA3746
Status: annotated
Amino acids: 457
Structure source: AlphaFold

3.6.5.4

GO:0048500 A complex of protein and RNA which facilitates translocation of proteins across membranes. GO:0008312 Binding to a 7S RNA, the RNA component of the signal recognition particle (SRP). GO:0005525 Binding to GTP, guanosine triphosphate. GO:0003924 Catalysis of the reaction: GTP + H2O = GDP + H+ + phosphate. GO:0006614 The targeting of proteins to a membrane that occurs during translation and is dependent upon two key components, the signal-recognition particle (SRP) and the SRP receptor. SRP is a cytosolic particle that transiently binds to the endoplasmic reticulum (ER) signal sequence in a nascent protein, to the large ribosomal unit, and to the SRP receptor in the ER membrane. 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 (%): 34.67
Human E-value: 1.49e-56
Gut microbiome off-target: hit
Essential (DEG): Y
Localization: CytoplasmicMembrane

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 0.626

Structure –

Pocket –

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)

3.6.5.4

Gene Ontology (GO)

GO:0048500 A complex of protein and RNA which facilitates translocation of proteins across membranes.
GO:0008312 Binding to a 7S RNA, the RNA component of the signal recognition particle (SRP).
GO:0005525 Binding to GTP, guanosine triphosphate.
GO:0003924 Catalysis of the reaction: GTP + H2O = GDP + H+ + phosphate.
GO:0006614 The targeting of proteins to a membrane that occurs during translation and is dependent upon two key components, the signal-recognition particle (SRP) and the SRP receptor. SRP is a cytosolic particle that transiently binds to the endoplasmic reticulum (ER) signal sequence in a nascent protein, to the large ribosomal unit, and to the SRP receptor in the ER membrane.
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.

32 records

Show feature table

Start	End	DB	Term	Name
92	285	FunFam	G3DSA:3.40.50.300:FF:000022	Signal recognition particle 54 kDa subunit
297	324	Coils	Coil	Coil
100	296	Pfam	PF00448	SRP54-type protein, GTPase domain
100	296	InterPro	IPR000897	Signal recognition particle, SRP54 subunit, GTPase domain
100	296	SMART	SM00962	SRP54_3
101	294	CDD	cd18539	SRP_G
1	86	SMART	SM00963	SRP54_N_2
1	86	InterPro	IPR013822	Signal recognition particle SRP54, helical bundle
329	433	SUPERFAMILY	SSF47446	Signal peptide-binding domain
329	433	InterPro	IPR036891	Signal recognition particle, SRP54 subunit, M-domain superfamily
269	282	ProSitePatterns	PS00300	SRP54-type proteins GTP-binding domain signature.
269	282	InterPro	IPR000897	Signal recognition particle, SRP54 subunit, GTPase domain
99	247	SMART	SM00382	AAA_5
99	247	InterPro	IPR003593	AAA+ ATPase domain
2	432	NCBIfam	TIGR00959	signal recognition particle protein
2	432	InterPro	IPR004780	Signal recognition particle protein
1	441	PANTHER	PTHR11564	SIGNAL RECOGNITION PARTICLE 54K PROTEIN SRP54
1	441	InterPro	IPR022941	Signal recognition particle, SRP54 subunit
310	448	Gene3D	G3DSA:1.10.260.30	-
310	448	InterPro	IPR036891	Signal recognition particle, SRP54 subunit, M-domain superfamily
5	443	Hamap	MF_00306	Signal recognition particle 54 kDa protein [srp54].
5	443	InterPro	IPR022941	Signal recognition particle, SRP54 subunit
5	82	Pfam	PF02881	SRP54-type protein, helical bundle domain
5	82	InterPro	IPR013822	Signal recognition particle SRP54, helical bundle
90	285	Gene3D	G3DSA:3.40.50.300	-
90	285	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
4	306	Gene3D	G3DSA:1.20.120.140	-
4	306	InterPro	IPR042101	Signal recognition particle SRP54, N-terminal domain superfamily
329	430	Pfam	PF02978	Signal peptide binding domain
329	430	InterPro	IPR004125	Signal recognition particle, SRP54 subunit, M-domain
42	354	SUPERFAMILY	SSF52540	P-loop containing nucleoside triphosphate hydrolases
42	354	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.

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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 PA3746	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
1				0.292

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.

54 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
ALF	4C7O	P0AGD7	103.0 Da LogP 1.30 TPSA 0.0	✓ Ro5	✓ Clean	`F[Al-](F)(F)F`
GCP	1RJ9	O07347	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	1JPJ	O07347	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…`
OXY	1LS1	O07347	32.0 Da LogP 0.07 TPSA 34.1	✓ Ro5	✓ Clean	`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
ZINC80639694	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)(…`
ZINC104869865	0.836	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	0.836	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	0.836	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	0.836	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	0.836	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	0.836	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)(…`
ZINC12501413	0.770	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	0.770	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	0.770	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	0.770	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	0.770	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	0.770	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	0.770	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	0.770	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	0.770	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)[…`
ZINC71774763	0.671	432.3 Da LogP -2.23 TPSA 198.3	1 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@](=O)(O)N3CCOCC3…`
ZINC4743771	0.652	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	0.652	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	0.652	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	0.652	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…`
ZINC12503703	0.638	427.2 Da LogP -1.42 TPSA 232.3	2 viol.	✓ Clean	`Nc1nc2c(ncn2[C@@H]2C[C@H](O)[C@@H](CO[P@@](=O)(…`
ZINC8215878	0.638	427.2 Da LogP -1.42 TPSA 232.3	2 viol.	✓ Clean	`Nc1nc2c(ncn2[C@H]2C[C@H](O)[C@@H](CO[P@@](=O)(O…`
ZINC100058967	0.632	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc(=O)c2ncn([C@H]3O[C@H](CO[P@](=O)(O)OP(=O)…`
ZINC12504287	0.632	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc(=O)c2ncn([C@@H]3O[C@@H](CO[P@@](=O)(O)OP(…`
ZINC12504288	0.632	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc(=O)c2ncn([C@H]3O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC31308647	0.632	443.2 Da LogP -2.45 TPSA 252.6	2 viol.	✓ Clean	`Nc1nc(=O)c2ncn([C@@H]3O[C@@H](CO[P@@](=O)(O)OP(…`
ZINC1532637	0.629	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…`
ZINC1550030	0.629	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…`
ZINC1570863	0.629	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(…`
ZINC1698205	0.629	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…`
ZINC2020098	0.629	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	0.629	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…`
ZINC3869967	0.629	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…`
ZINC3869968	0.629	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)…`
ZINC3869969	0.629	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)…`
ZINC3869970	0.629	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…`
ZINC4990799	0.629	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…`
ZINC4990800	0.629	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](…`
ZINC4990801	0.629	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](…`
ZINC4990802	0.629	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]…`
ZINC5605239	0.629	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…`
ZINC6119283	0.629	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(…`
ZINC6585367	0.629	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)…`
ZINC8613125	0.629	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…`
ZINC97973759	0.629	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…`
ZINC97973760	0.629	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](…`
ZINC12958393	0.627	428.2 Da LogP -2.03 TPSA 226.5	2 viol.	✓ Clean	`O=c1[nH]cnc2c1ncn2[C@@H]1O[C@@H](CO[P@](=O)(O)O…`
ZINC4261903	0.627	428.2 Da LogP -2.03 TPSA 226.5	2 viol.	✓ Clean	`O=c1[nH]cnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)O…`
ZINC95921560	0.627	428.2 Da LogP -2.03 TPSA 226.5	2 viol.	✓ Clean	`O=c1[nH]cnc2c1ncn2[C@H]1O[C@@H](CO[P@@](=O)(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.