Protein profile

KP13_31747

1,4-alpha-glucan-branching enzyme

Genome: KpKP13

Gene: AHE42282.1 glgB Structure source: AlphaFold + ColabFold UniProt A0A0H3GWW6

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Amino acids 728

Annotations 8

Features 36

PDB binders 4

Druggability 0.384

Overview

Basic information about this protein and its source genome.

Accession: KP13_31747
Assembly: Klebsiella pneumoniae subsp. pneumoniae Kp13, complete sequence
Gene: AHE42282.1 glgB
Status: annotated
Amino acids: 728
Structure source: AlphaFold + ColabFold

2.4.1.18

GO:0005975 The chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y. GO:0005978 The chemical reactions and pathways resulting in the formation of glycogen, a polydisperse, highly branched glucan composed of chains of D-glucose residues. GO:0004553 Catalysis of the hydrolysis of any O-glycosyl bond. GO:0003824 Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic. GO:0043169 Binding to a cation, a charged atom or group of atoms with a net positive charge. GO:0003844 Catalysis of the transfer of a segment of a (1->4)-alpha-D-glucan chain to a primary hydroxyl group in a similar glucan chain.

Target profile

Computed evidence for target prioritization.

Human off-target: hit
Human identity (%): 25.371
Human E-value: 6.27e-41
Gut microbiome off-target: hit
Essential (DEG): Y
DEG identity (%): 64.276
DEG E-value: 0.0
Localization: Cytoplasmic
ColabFold pLDDT: 96.14

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 0.384

Structure A0A0H3GWW6

Pocket Pocket 1

P2Rank 0.836

Structure A0A0H3GWW6

Pocket Pocket 1

ColabFold model

FPocket 0.52 · Pocket 5

P2Rank 0.8 · Pocket 1

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 265 / 4744 genomes with a hit

Normalized 0.056

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 7 GO

Enzyme Commission (EC)

2.4.1.18

Gene Ontology (GO)

GO:0005975 The chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y.
GO:0005978 The chemical reactions and pathways resulting in the formation of glycogen, a polydisperse, highly branched glucan composed of chains of D-glucose residues.
GO:0004553 Catalysis of the hydrolysis of any O-glycosyl bond.
GO:0003824 Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
GO:0043169 Binding to a cation, a charged atom or group of atoms with a net positive charge.
GO:0003844 Catalysis of the transfer of a segment of a (1->4)-alpha-D-glucan chain to a primary hydroxyl group in a similar glucan chain.
GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

Sequence Features

Domain/signature hits from InterPro and related databases.

36 records

Show feature table

Start	End	DB	Term	Name
623	728	Gene3D	G3DSA:2.60.40.1180	-
623	728	InterPro	IPR013780	Glycosyl hydrolase, all-beta
247	596	SMART	SM00642	aamy
247	596	InterPro	IPR006047	Glycosyl hydrolase, family 13, catalytic domain
125	207	Pfam	PF02922	Carbohydrate-binding module 48 (Isoamylase N-terminal domain)
125	207	InterPro	IPR004193	Glycoside hydrolase, family 13, N-terminal
109	723	NCBIfam	TIGR01515	1,4-alpha-glucan branching enzyme
109	723	InterPro	IPR006407	1,4-alpha-glucan-branching enzyme, GlgB
212	612	CDD	cd11322	AmyAc_Glg_BE
623	726	SUPERFAMILY	SSF51011	Glycosyl hydrolase domain
120	723	PANTHER	PTHR43651	1,4-ALPHA-GLUCAN-BRANCHING ENZYME
226	619	FunFam	G3DSA:3.20.20.80:FF:000003	1,4-alpha-glucan branching enzyme GlgB
16	115	SUPERFAMILY	SSF81296	E set domains
16	115	InterPro	IPR014756	Immunoglobulin E-set
6	728	PIRSF	PIRSF000463	GlgB
6	728	InterPro	IPR037439	1,4-alpha-glucan-branching enzyme
628	725	Pfam	PF02806	Alpha amylase, C-terminal all-beta domain
628	725	InterPro	IPR006048	Alpha-amylase/branching enzyme, C-terminal all beta
620	726	FunFam	G3DSA:2.60.40.1180:FF:000002	1,4-alpha-glucan branching enzyme GlgB
2	102	FunFam	G3DSA:2.60.40.10:FF:000331	1,4-alpha-glucan branching enzyme GlgB
231	612	Gene3D	G3DSA:3.20.20.80	Glycosidases
231	621	SUPERFAMILY	SSF51445	(Trans)glycosidases
231	621	InterPro	IPR017853	Glycoside hydrolase superfamily
103	221	FunFam	G3DSA:2.60.40.10:FF:000169	1,4-alpha-glucan branching enzyme GlgB
117	224	SUPERFAMILY	SSF81296	E set domains
117	224	InterPro	IPR014756	Immunoglobulin E-set
118	222	CDD	cd02855	E_set_GBE_prok_N
118	222	InterPro	IPR044143	Glycogen branching enzyme GlgB, N-terminal Early set domain
102	221	Gene3D	G3DSA:2.60.40.10	Immunoglobulins
102	221	InterPro	IPR013783	Immunoglobulin-like fold
2	101	Gene3D	G3DSA:2.60.40.10	Immunoglobulins
2	101	InterPro	IPR013783	Immunoglobulin-like fold
273	341	Pfam	PF00128	Alpha amylase, catalytic domain
273	341	InterPro	IPR006047	Glycosyl hydrolase, family 13, catalytic domain
101	726	Hamap	MF_00685	1,4-alpha-glucan branching enzyme GlgB [glgB].
101	726	InterPro	IPR006407	1,4-alpha-glucan-branching enzyme, GlgB

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_A0A0H3GWW6	AlphaFold	—	—	full sequence	—	Viewing
ColabFold KP13_31747	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
16				0.375
10				0.255
3				0.243

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	12.69	0.659
2	8.78	0.47
3	4.06	0.163
4	2.97	0.096
5	2.13	0.049

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
5				0.52

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	11.13	0.597
2	9.48	0.509
3	3.17	0.108
4	3.11	0.104
5	2.81	0.087

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.

45 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
BTB	3M07	Q8ZPF0	209.2 Da LogP -3.01 TPSA 104.4	✓ Ro5	✓ Clean	`C(CO)N(CCO)C(CO)(CO)CO`
FLC	3VGB	Q55088	189.1 Da LogP -5.25 TPSA 140.6	✓ Ro5	✓ Clean	`C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O`
SIN	3AML	Q01401	118.1 Da LogP -0.06 TPSA 74.6	✓ Ro5	✓ Clean	`C(CC(=O)O)C(=O)O`
TAM	6JFJ	A0A0C5GWS2	163.2 Da LogP -1.17 TPSA 86.7	✓ Ro5	✓ Clean	`C(CO)C(CCO)(CCO)N`

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
ZINC1615342	1.000	209.2 Da LogP -3.01 TPSA 104.4	✓ Ro5	✓ Clean	`OCCN(CCO)C(CO)(CO)CO`
ZINC2575038	0.625	205.3 Da LogP 0.00 TPSA 86.7	✓ Ro5	✓ Clean	`NC(CCCO)(CCCO)CCCO`
ZINC1529497	0.615	230.3 Da LogP 3.06 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCCCCC(=O)O`
ZINC1531045	0.615	202.2 Da LogP 2.28 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCCC(=O)O`
ZINC1593115	0.615	216.3 Da LogP 2.67 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCCCC(=O)O`
ZINC1700020	0.615	244.3 Da LogP 3.45 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCCCCCC(=O)O`
ZINC3860440	0.615	258.4 Da LogP 3.84 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCCCCCCC(=O)O`
ZINC3861298	0.615	286.4 Da LogP 4.62 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCCCCCCCCC(=O)O`
ZINC5113062	0.615	272.4 Da LogP 4.23 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCCCCCCCC(=O)O`
ZINC1572706	0.563	260.2 Da LogP -1.05 TPSA 132.8	✓ Ro5	✓ Clean	`O=C(O)CCC(=O)NCCNC(=O)CCC(=O)O`
ZINC1703342	0.533	202.2 Da LogP 1.07 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)CCCC(=O)CCCC(=O)O`
ZINC1728397	0.533	233.2 Da LogP -0.29 TPSA 115.1	✓ Ro5	✓ Clean	`O=C(O)CCN(CCC(=O)O)CCC(=O)O`
ZINC2508031	0.533	230.3 Da LogP 1.85 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)CCCCC(=O)CCCCC(=O)O`
ZINC2517013	0.533	250.2 Da LogP 0.89 TPSA 111.9	✓ Ro5	✓ Clean	`O=C(O)CCP(CCC(=O)O)CCC(=O)O`
ZINC1697439	0.529	219.5 Da LogP 1.79 TPSA 54.4	✓ Ro5	✓ Clean	`O=C(O)CCC(=O)C(Cl)(Cl)Cl`
ZINC35465466	0.529	244.3 Da LogP 2.24 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCC(=O)CCC(=O)O`
ZINC39208104	0.529	262.2 Da LogP -0.20 TPSA 127.2	✓ Ro5	✓ Clean	`O=C(O)CCC(=O)OCCOC(=O)CCC(=O)O`
ZINC2334905	0.522	261.4 Da LogP 1.10 TPSA 63.9	✓ Ro5	✓ Clean	`CC(C)CCN(CCC(C)C)C(CO)(CO)CO`
ZINC3159953	0.522	261.4 Da LogP 1.38 TPSA 63.9	✓ Ro5	✓ Clean	`CCCCCN(CCCCC)C(CO)(CO)CO`
ZINC145743383	0.500	266.2 Da LogP 0.77 TPSA 129.0	✓ Ro5	✓ Clean	`O=C(O)CCP(=O)(CCC(=O)O)CCC(=O)O`
ZINC1542984448	0.500	470.5 Da LogP 0.07 TPSA 148.4	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)O`
ZINC1586444	0.500	210.2 Da LogP -0.65 TPSA 108.7	✓ Ro5	✓ Clean	`O=C(O)CCS(=O)(=O)CCC(=O)O`
ZINC1753095	0.500	238.3 Da LogP 1.40 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)CCSCCSCCC(=O)O`
ZINC22028383	0.500	204.2 Da LogP -0.88 TPSA 98.7	✓ Ro5	✓ Clean	`O=C(O)CCNCCNCCC(=O)O`
ZINC22576322	0.500	348.4 Da LogP -0.51 TPSA 155.7	✓ Ro5	✓ Clean	`O=C(O)CCN(CCC(=O)O)CCN(CCC(=O)O)CCC(=O)O`
ZINC26897400	0.500	286.4 Da LogP 3.41 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)CCCCCCC(=O)CCCCCCC(=O)O`
ZINC3074813	0.500	258.3 Da LogP 2.63 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)CCCCCC(=O)CCCCCC(=O)O`
ZINC34423725	0.500	342.5 Da LogP 4.97 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCCC(=O)CCCCCCCCC(=O)O`
ZINC35977596	0.500	294.3 Da LogP 0.00 TPSA 111.5	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCOCCC(=O)O`
ZINC38682833	0.500	286.3 Da LogP -0.61 TPSA 115.2	✓ Ro5	✓ Clean	`O=C(O)CCC(=O)N1CCN(C(=O)CCC(=O)O)CC1`
ZINC39383060	0.500	206.2 Da LogP -0.03 TPSA 93.1	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCC(=O)O`
ZINC39427081	0.500	250.2 Da LogP -0.01 TPSA 102.3	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCC(=O)O`
ZINC4181831	0.500	232.2 Da LogP -0.01 TPSA 129.0	✓ Ro5	✓ Clean	`O=C(O)CCC(=O)C(CC(=O)O)CC(=O)O`
ZINC4822898	0.500	272.3 Da LogP 3.02 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)CCCCCCC(=O)CCCCCC(=O)O`
ZINC4822900	0.500	300.4 Da LogP 3.80 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)CCCCCCCCC(=O)CCCCCC(=O)O`
ZINC5297554	0.500	289.5 Da LogP 2.16 TPSA 63.9	✓ Ro5	✓ Clean	`CCCCCCN(CCCCCC)C(CO)(CO)CO`
ZINC71257127	0.500	426.5 Da LogP 0.05 TPSA 139.2	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCOCCOCCOCCOCCC(=O)O`
ZINC71257128	0.500	338.4 Da LogP 0.02 TPSA 120.8	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCOCCOCCC(=O)O`
ZINC79016464	0.500	382.4 Da LogP 0.04 TPSA 130.0	✓ Ro5	✓ Clean	`O=C(O)CCOCCOCCOCCOCCOCCOCCC(=O)O`
ZINC97941822	0.500	317.5 Da LogP 2.94 TPSA 63.9	✓ Ro5	✓ Clean	`CCCCCCCN(CCCCCCC)C(CO)(CO)CO`
ZINC97942927	0.500	373.6 Da LogP 4.51 TPSA 63.9	✓ Ro5	✓ Clean	`CCCCCCCCCN(CCCCCCCCC)C(CO)(CO)CO`

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.