X-group (possible homology)

185 Bifunctional inhibitor/lipid-transfer protein/seed storage 2S albumin-like

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Ligands and drugs

1,158

Member domains

107

with ligand contacts (≤ 4 Å)

9.2% of members

with DrugDomain annotations

6.9% of members

with a DrugBank compound

5.6% of members

Aggregated over all current member domains of this group. Drug annotations come from DrugDomain; buffers and crystallization additives are excluded from the tables below.

Chemical profile

ClassyFire chemical superclasses of the ligands bound by this X-group's proteins, from DrugDomain annotations.

Proteins with classified ligands

Superclasses bound (of 23)

—

Superclasses per 20 proteins

fewer than 20 proteins: too few to compare at equal depth

The raw number of superclasses rises with the number of proteins sampled; the per-20 value compares X-groups at equal depth.

Superclass	Proteins	Expected	Ratio	Significance
Homogeneous metal compounds	3	6.3	0.48×	q = 0.14
Hydrocarbons	1	0.1	11×	not tested
Lipids and lipid-like molecules	10	1.4	7.01×	not tested
Organic nitrogen compounds	1	0.4	2.45×	not tested
Organic oxygen compounds	2	2.6	0.78×	not tested
Homogeneous non-metal compounds	2	2.8	0.72×	not tested
Organic acids and derivatives	1	2.0	0.50×	not tested
Nucleosides, nucleotides, and analogues	1	3.5	0.28×	not tested

enriched (q < 0.05)depleted (q < 0.05)not significantnot tested (expected < 5)

Unit: a protein (UniProt accession) with a ligand-binding domain in this X-group, counted once per superclass. Expected counts use each superclass's frequency across all ligand-binding X-groups; significance is Fisher's exact test with Benjamini–Hochberg correction. Buffers and crystallization additives are excluded. ECOD v295.2; the method follows the ECOD 2027 update, whose published figures used a slightly different artifact filter.

DrugBank compounds

DrugBank	PDB ligand	Name	Domains
DB08231	MYR	Myristic acid	7
DB03017	DAO	Lauric acid	6
DB00141	NAG	N-Acetylglucosamine	4
DB03193	STE	Stearic acid	3
DB03438	PGM	Lysophosphatidylglycerol	3
DB03796	PLM	Palmitic Acid	3
DB04257	PAM	Palmitoleic Acid	2
DB00132	LNL	alpha-Linolenic acid	1
DB01707	LAP	L-Alfa-Lysophosphatidylcholine, Lauroyl	1
DB01992	COA	Coenzyme A	1
DB02219	CXS	3-(cyclohexylamino)propanesulfonic acid	1
DB02304	E2P	Prostaglandin B2	1
DB02955	RCL	Ricinoleic acid	1
DB03600	DKA	Capric acid	1
DB04540	CLR	Cholesterol	1
DB11220	O8N	Octacosanol	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	17
MYR	MYRISTIC ACID	7
DAO	LAURIC ACID	6
ZNmetal	ZINC ION	5
CL	CHLORIDE ION	4
29N	1,1',1''-(1,3,5-triazinane-1,3,5-triyl)tripropan-1-one	3
NAmetal	SODIUM ION	3
PGM	1-MYRISTOYL-2-HYDROXY-SN-GLYCERO-3-[PHOSPHO-RAC-(1-GLYCEROL)]	3
PLM	PALMITIC ACID	3
STE	STEARIC ACID	3
ASY	(12E)-10-oxooctadec-12-enoic acid	2
HP6	HEPTANE	2
LPC	[1-MYRISTOYL-GLYCEROL-3-YL]PHOSPHONYLCHOLINE	2
PAM	PALMITOLEIC ACID	2
TFA	trifluoroacetic acid	2
CLR	CHOLESTEROL	1
COA	COENZYME A	1
CXS	3-CYCLOHEXYL-1-PROPYLSULFONIC ACID	1
DKA	DECANOIC ACID	1
E2P	PROSTAGLANDIN B2	1