Protein profile

KP13_02166

Chromosome initiation inhibitor

Genome: KpKP13

Gene: iciA AHE42736.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GV81

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Amino acids 297

Annotations 3

Features 26

PDB binders 2

Druggability 0.435

Overview

Basic information about this protein and its source genome.

Accession: KP13_02166
Assembly: Klebsiella pneumoniae subsp. pneumoniae Kp13, complete sequence
Gene: iciA AHE42736.1
Status: annotated
Amino acids: 297
Structure source: AlphaFold + ColabFold

GO:0006355 Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription. GO:0003700 A transcription regulator activity that modulates transcription of gene sets via selective and non-covalent binding to a specific double-stranded genomic DNA sequence (sometimes referred to as a motif) within a cis-regulatory region. Regulatory regions include promoters (proximal and distal) and enhancers. Genes are transcriptional units, and include bacterial operons. GO:0043565 Binding to DNA of a specific nucleotide composition, e.g. GC-rich DNA binding, or with a specific sequence motif or type of DNA e.g. promotor binding or rDNA binding.

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: 90.77

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 A0A0H3GV81

Pocket Pocket 8

P2Rank 0.64

Structure A0A0H3GV81

Pocket Pocket 1

ColabFold model

FPocket 0.236 · Pocket 19

P2Rank 0.407 · Pocket 1

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 117 / 4744 genomes with a hit

Normalized 0.025

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

3 GO

Gene Ontology (GO)

GO:0006355 Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
GO:0003700 A transcription regulator activity that modulates transcription of gene sets via selective and non-covalent binding to a specific double-stranded genomic DNA sequence (sometimes referred to as a motif) within a cis-regulatory region. Regulatory regions include promoters (proximal and distal) and enhancers. Genes are transcriptional units, and include bacterial operons.
GO:0043565 Binding to DNA of a specific nucleotide composition, e.g. GC-rich DNA binding, or with a specific sequence motif or type of DNA e.g. promotor binding or rDNA binding.

Sequence Features

Domain/signature hits from InterPro and related databases.

26 records

Show feature table

Start	End	DB	Term	Name
1	296	PANTHER	PTHR30579	TRANSCRIPTIONAL REGULATOR
92	289	SUPERFAMILY	SSF53850	Periplasmic binding protein-like II
78	297	FunFam	G3DSA:3.40.190.290:FF:000002	HTH-type transcriptional regulator ArgP
5	293	NCBIfam	TIGR03298	ArgP/LysG family DNA-binding transcriptional regulator
5	293	InterPro	IPR017685	HTH-type transcriptional regulator ArgP
4	111	SUPERFAMILY	SSF46785	Winged helix DNA-binding domain
4	111	InterPro	IPR036390	Winged helix DNA-binding domain superfamily
2	77	Gene3D	G3DSA:1.10.10.10	-
2	77	InterPro	IPR036388	Winged helix-like DNA-binding domain superfamily
93	286	CDD	cd08428	PBP2_IciA_ArgP
78	297	Gene3D	G3DSA:3.40.190.290	-
1	296	Hamap	MF_00513	HTH-type transcriptional regulator ArgP [argP].
1	296	InterPro	IPR023490	HTH-type transcriptional regulator ArgP, gammaproteobacteria
4	60	ProSiteProfiles	PS50931	LysR-type HTH domain profile.
4	60	InterPro	IPR000847	Transcription regulator HTH, LysR
2	78	FunFam	G3DSA:1.10.10.10:FF:000061	HTH-type transcriptional regulator ArgP
21	32	PRINTS	PR00039	LysR bacterial regulatory protein HTH signature
21	32	InterPro	IPR000847	Transcription regulator HTH, LysR
32	42	PRINTS	PR00039	LysR bacterial regulatory protein HTH signature
32	42	InterPro	IPR000847	Transcription regulator HTH, LysR
42	53	PRINTS	PR00039	LysR bacterial regulatory protein HTH signature
42	53	InterPro	IPR000847	Transcription regulator HTH, LysR
7	64	Pfam	PF00126	Bacterial regulatory helix-turn-helix protein, lysR family
7	64	InterPro	IPR000847	Transcription regulator HTH, LysR
93	287	Pfam	PF03466	LysR substrate binding domain
93	287	InterPro	IPR005119	LysR, substrate-binding

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_A0A0H3GV81	AlphaFold	—	—	full sequence	—	Viewing
ColabFold KP13_02166	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
8				0.435
1				0.378

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	10.88	0.584
2	1.17	0.01
3	1.16	0.009
4	0.94	0.005

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
19				0.236

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	Sticks	Spheres	Surfaces	Score	Probability	Labels	Zoom	Positions
1				7.48	0.393
2				1.07	0.007

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
FLC	5ZZO	A0A0D1IHL7	189.1 Da LogP -5.25 TPSA 140.6	✓ Ro5	✓ Clean	`C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O`
P33	3FD3	A9CJQ0	326.4 Da LogP -0.93 TPSA 95.8	✓ Ro5	✓ Clean	`C(COCCOCCOCCOCCOCCOCCO)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
ZINC12501520	1.000	458.5 Da LogP -0.88 TPSA 123.5	1 viol.	✓ Clean	`OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC3874716	1.000	414.5 Da LogP -0.90 TPSA 114.3	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC4283769	1.000	238.3 Da LogP -0.96 TPSA 77.4	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCCO`
ZINC4521548	1.000	282.3 Da LogP -0.95 TPSA 86.6	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCCOCCO`
ZINC5178829	1.000	326.4 Da LogP -0.93 TPSA 95.8	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCCOCCOCCO`
ZINC5178830	1.000	370.4 Da LogP -0.91 TPSA 105.1	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC115086873	0.688	209.2 Da LogP -1.08 TPSA 83.2	✓ Ro5	✓ Clean	`NOCCOCCOCCOCCO`
ZINC137432264	0.688	457.6 Da LogP -0.91 TPSA 129.3	1 viol.	✓ Clean	`NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC146143823	0.688	237.3 Da LogP -1.00 TPSA 83.2	✓ Ro5	✓ Clean	`NCCOCCOCCOCCOCCO`
ZINC1542984442	0.688	413.5 Da LogP -0.93 TPSA 120.1	✓ Ro5	✓ Clean	`NCCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC1565503710	0.688	254.3 Da LogP -0.03 TPSA 57.2	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCCS`
ZINC1580161	0.688	208.3 Da LogP -0.33 TPSA 57.2	✓ Ro5	✓ Clean	`COCCOCCOCCOCCO`
ZINC16052118	0.688	340.4 Da LogP -0.28 TPSA 84.8	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCO`
ZINC16052257	0.688	384.5 Da LogP -0.26 TPSA 94.1	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC1857792028	0.688	430.6 Da LogP 0.04 TPSA 94.1	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCCOCCOCCOCCOCCS`
ZINC1857792057	0.688	474.6 Da LogP 0.06 TPSA 103.3	1 viol.	✓ Clean	`OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCS`
ZINC230494776	0.688	325.4 Da LogP -0.96 TPSA 101.6	✓ Ro5	✓ Clean	`NCCOCCOCCOCCOCCOCCOCCO`
ZINC34317654	0.688	472.6 Da LogP -0.23 TPSA 112.5	1 viol.	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC38917157	0.688	210.3 Da LogP -0.04 TPSA 47.9	✓ Ro5	✓ Clean	`OCCOCCOCCOCCS`
ZINC44076059	0.688	428.5 Da LogP -0.24 TPSA 103.3	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC5210101	0.688	252.3 Da LogP -0.31 TPSA 66.4	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCO`
ZINC5650743	0.688	222.3 Da LogP 0.07 TPSA 57.2	✓ Ro5	✓ Clean	`CCOCCOCCOCCOCCO`
ZINC5997860	0.688	296.4 Da LogP -0.29 TPSA 75.6	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCO`
ZINC6403917	0.688	354.4 Da LogP 0.11 TPSA 84.8	✓ Ro5	✓ Clean	`CCOCCOCCOCCOCCOCCOCCOCCO`
ZINC77271182	0.688	281.3 Da LogP -0.98 TPSA 92.4	✓ Ro5	✓ Clean	`NCCOCCOCCOCCOCCOCCO`
ZINC83253921	0.688	369.5 Da LogP -0.95 TPSA 110.9	✓ Ro5	✓ Clean	`NCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC90741446	0.688	386.5 Da LogP 0.02 TPSA 84.8	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCCOCCOCCOCCS`
ZINC90741447	0.688	298.4 Da LogP -0.01 TPSA 66.4	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCCOCCS`
ZINC144169243	0.647	281.3 Da LogP -1.37 TPSA 89.4	✓ Ro5	✓ Clean	`OCCOCCOCCNCCOCCOCCO`
ZINC205758716	0.647	457.6 Da LogP -1.31 TPSA 126.3	1 viol.	✓ Clean	`OCCOCCOCCOCCOCCNCCOCCOCCOCCOCCO`
ZINC575441396	0.647	369.5 Da LogP -1.34 TPSA 107.9	✓ Ro5	✓ Clean	`OCCOCCOCCOCCNCCOCCOCCOCCO`
ZINC27644247	0.618	230.3 Da LogP 0.09 TPSA 111.2	✓ Ro5	✓ Clean	`CCCCNC(=N)NCCC[C@H](N)C(=O)O`
ZINC1644613	0.611	206.3 Da LogP 0.83 TPSA 47.9	✓ Ro5	✓ Clean	`CCCCOCCOCCOCCO`
ZINC258839852	0.611	276.3 Da LogP 0.61 TPSA 57.2	✓ Ro5	✓ Clean	`OCCOCCOCCOCCOCC(F)(F)F`
ZINC167715346	0.600	266.3 Da LogP -0.18 TPSA 77.4	✓ Ro5	✓ Clean	`OCCCOCCOCCOCCOCCCO`
ZINC34160867	0.600	222.3 Da LogP -0.20 TPSA 68.2	✓ Ro5	✓ Clean	`OCCCOCCOCCOCCCO`
ZINC1580159	0.588	210.3 Da LogP -0.26 TPSA 58.9	✓ Ro5	✓ Clean	`OCCOCCSCCOCCO`
ZINC196899382	0.588	228.2 Da LogP -0.14 TPSA 92.4	✓ Ro5	✓ Clean	`N[C@@H](CCCNC(=O)C(F)(F)F)C(=O)O`
ZINC4155291	0.583	216.2 Da LogP -1.37 TPSA 130.8	✓ Ro5	✓ Clean	`CC(=O)/N=C(\N)NCCC[C@H](N)C(=O)O`
ZINC4155299	0.583	216.2 Da LogP -1.37 TPSA 130.8	✓ Ro5	✓ Clean	`CC(=O)/N=C(\N)NCCC[C@@H](N)C(=O)O`
ZINC142610155	0.579	340.4 Da LogP -0.84 TPSA 112.9	✓ Ro5	✓ Clean	`O=C(O)COCCOCCOCCOCCOCCOCCO`
ZINC207588231	0.579	207.3 Da LogP -0.75 TPSA 60.0	✓ Ro5	✓ Clean	`CNCCOCCOCCOCCO`
ZINC258836919	0.579	364.4 Da LogP -0.27 TPSA 84.8	✓ Ro5	✓ Clean	`C#CCOCCOCCOCCOCCOCCOCCOCCO`
ZINC725239375	0.579	310.3 Da LogP -0.46 TPSA 103.7	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCOCCOCCO`
ZINC83254085	0.579	354.4 Da LogP -0.45 TPSA 112.9	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCOCCOCCOCCO`
ZINC83254091	0.579	320.4 Da LogP -0.29 TPSA 75.6	✓ Ro5	✓ Clean	`C#CCOCCOCCOCCOCCOCCOCCO`
ZINC96503366	0.579	408.5 Da LogP -0.26 TPSA 94.1	✓ Ro5	✓ Clean	`C#CCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC96503406	0.579	276.3 Da LogP -0.31 TPSA 66.4	✓ Ro5	✓ Clean	`C#CCOCCOCCOCCOCCOCCO`
ZINC96503425	0.579	222.2 Da LogP -0.50 TPSA 85.2	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCO`
ZINC96503526	0.579	442.5 Da LogP -0.41 TPSA 131.4	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCOCCOCCOCCOCCOCCO`

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.