Protein profile

KP13_01950

Citrate/malate transporter

Genome: KpKP13

Gene: AHE46389.1 cimH Structure source: AlphaFold + ColabFold UniProt A0A0H3GI38

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Amino acids 463

Annotations 6

Features 39

PDB binders 2

Druggability 0.619

Overview

Basic information about this protein and its source genome.

Accession: KP13_01950
Assembly: Klebsiella pneumoniae subsp. pneumoniae Kp13, complete sequence
Gene: AHE46389.1 cimH
Status: annotated
Amino acids: 463
Structure source: AlphaFold + ColabFold

GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it. GO:0015711 The directed movement of organic anions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Organic anions are atoms or small molecules with a negative charge which contain carbon in covalent linkage. GO:0008514 OBSOLETE. Enables the transfer of organic anions from one side of a membrane to the other. Organic anions are atoms or small molecules with a negative charge which contain carbon in covalent linkage. GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. GO:0015293 Enables the active transport of a solute across a membrane by a mechanism whereby two or more species are transported together in the same direction in a tightly coupled process not directly linked to a form of energy other than chemiosmotic energy. GO:0006101 The chemical reactions and pathways involving citrate, 2-hydroxy-1,2,3-propanetricarboxylate. Citrate is widely distributed in nature and is an important intermediate in the TCA cycle and the glyoxylate cycle.

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: CytoplasmicMembrane
ColabFold pLDDT: 85.89

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 0.619

Structure A0A0H3GI38

Pocket Pocket 17

P2Rank 0.441

Structure A0A0H3GI38

Pocket Pocket 1

ColabFold model

FPocket 0.963 · Pocket 7

P2Rank 0.236 · Pocket 1

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 46 / 4744 genomes with a hit

Normalized 0.01

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

Gene Ontology (GO)

GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
GO:0015711 The directed movement of organic anions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Organic anions are atoms or small molecules with a negative charge which contain carbon in covalent linkage.
GO:0008514 OBSOLETE. Enables the transfer of organic anions from one side of a membrane to the other. Organic anions are atoms or small molecules with a negative charge which contain carbon in covalent linkage.
GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
GO:0015293 Enables the active transport of a solute across a membrane by a mechanism whereby two or more species are transported together in the same direction in a tightly coupled process not directly linked to a form of energy other than chemiosmotic energy.
GO:0006101 The chemical reactions and pathways involving citrate, 2-hydroxy-1,2,3-propanetricarboxylate. Citrate is widely distributed in nature and is an important intermediate in the TCA cycle and the glyoxylate cycle.

Sequence Features

Domain/signature hits from InterPro and related databases.

39 records

Show feature table

Start	End	DB	Term	Name
72	89	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
463	463	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
375	397	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
42	60	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
226	248	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
232	253	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
221	231	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
398	440	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
300	328	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
45	454	Pfam	PF03390	2-hydroxycarboxylate transporter family
45	454	InterPro	IPR004679	2-hydroxycarboxylate transporter
117	135	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
329	347	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
164	187	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
164	186	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
348	368	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
254	299	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
136	152	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
90	95	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
191	213	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
193	220	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
134	151	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
153	163	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
369	373	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
188	192	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
441	462	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
1	41	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
97	119	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
96	116	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
312	334	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
42	61	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
32	460	PANTHER	PTHR40033	NA(+)-MALATE SYMPORTER
32	460	InterPro	IPR004679	2-hydroxycarboxylate transporter
71	90	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
25	462	PIRSF	PIRSF005348	YxkH
25	462	InterPro	IPR004679	2-hydroxycarboxylate transporter
374	397	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
346	365	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
61	71	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.

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_A0A0H3GI38	AlphaFold	—	—	full sequence	—	Viewing
ColabFold KP13_01950	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
6				0.102
7				0.026
16				0.003
12				0.001

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	9.56	0.441
2	7.64	0.339
3	5.12	0.194
4	4.7	0.17
5	3.29	0.092

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
7				0.963
21				0.317

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	3.62	0.135
2	3.44	0.124
3	2.59	0.074
4	1.92	0.039
5	1.84	0.036

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
BOG	5XAR	P31602	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1)CO)…`
FLC	5X9R	P31602	189.1 Da LogP -5.25 TPSA 140.6	✓ Ro5	✓ Clean	`C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[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
ZINC100034925	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](…`
ZINC100050848	1.000	376.5 Da LogP 2.50 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](…`
ZINC100056252	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[…`
ZINC100622854	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O…`
ZINC100622858	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O…`
ZINC100622862	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](…`
ZINC100623033	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)…`
ZINC100623036	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O…`
ZINC100623039	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)…`
ZINC100623040	1.000	334.5 Da LogP 1.33 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O…`
ZINC105807070	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@H…`
ZINC106384623	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC118906329	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[…`
ZINC118906375	1.000	264.3 Da LogP -0.62 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@H]1O`
ZINC118911494	1.000	278.3 Da LogP -0.23 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@H…`
ZINC118911500	1.000	278.3 Da LogP -0.23 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@H]…`
ZINC118911909	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@…`
ZINC140958235	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)…`
ZINC140974145	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@…`
ZINC141152247	1.000	264.3 Da LogP -0.62 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@H]…`
ZINC141261234	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C…`
ZINC141262250	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@…`
ZINC14880349	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[…`
ZINC14880350	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[C…`
ZINC15609263	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC1849674	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1O[C@@H](CO)[C@H](O)[C@@H](O)[C@@…`
ZINC2046837	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@H]1O[C@@H](CO)[C@H](O)[C@@H](O)[C@…`
ZINC248251557	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@@H](CO)[C@H](O)[C@@H](O)[C…`
ZINC40165555	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H…`
ZINC4521560	1.000	264.3 Da LogP -0.62 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O`
ZINC48016017	1.000	278.3 Da LogP -0.23 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]…`
ZINC49878458	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[…`
ZINC53683291	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]…`
ZINC5820343	1.000	264.3 Da LogP -0.62 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O`
ZINC58538417	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C…`
ZINC58563863	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]…`
ZINC59206904	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@@…`
ZINC66122924	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@@H…`
ZINC71788562	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC71788563	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC71788565	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C…`
ZINC71788566	1.000	306.4 Da LogP 0.55 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C…`
ZINC85478989	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@…`
ZINC85590873	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[…`
ZINC85590876	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)…`
ZINC85590883	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)[…`
ZINC85590888	1.000	320.4 Da LogP 0.94 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCO[C@@H]1O[C@@H](CO)[C@@H](O)[C@@H](O)…`
ZINC85605815	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[…`
ZINC94437834	1.000	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O`
ZINC95713698	1.000	348.5 Da LogP 1.72 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](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.