X-group (possible homology)

194 Serum albumin-like

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Ligands and drugs

1,200

Member domains

780

with ligand contacts (≤ 4 Å)

65.0% of members

529

with DrugDomain annotations

44.1% of members

408

with a DrugBank compound

34.0% 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
Lignans, neolignans and related compounds	1	0.0	136×	not tested
Organohalogen compounds	1	0.0	36×	not tested
Alkaloids and derivatives	1	0.0	30×	not tested
Phenylpropanoids and polyketides	3	0.2	15×	not tested
Benzenoids	7	0.7	9.71×	not tested
Mixed metal/non-metal compounds	1	0.2	4.83×	not tested
Lipids and lipid-like molecules	5	1.1	4.55×	not tested
Organic acids and derivatives	6	1.5	3.93×	not tested
Organic nitrogen compounds	1	0.3	3.18×	not tested
Organic oxygen compounds	6	2.0	3.06×	not tested
Homogeneous non-metal compounds	5	2.1	2.36×	not tested
Organoheterocyclic compounds	2	1.5	1.32×	not tested
Homogeneous metal compounds	3	4.8	0.62×	not tested
Nucleosides, nucleotides, and analogues	1	2.7	0.37×	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	86
DB03796	PLM	Palmitic Acid	33
DB00139	SIN	Succinic acid	15
DB00788	NPS	Naproxen	13
DB00586	DIF	Diclofenac	12
DB04674	DIU	2-HYDROXY-3,5-DIIODOBENZOIC ACID	12
DB04519	OCA	Caprylic acid	11
DB01238	9SC	Aripiprazole	10
DB00172	PRO	Proline	9
DB14104	EIC	Linoleic acid	9
DB00451	T44	Levothyroxine	7
DB00515	CPT	Cisplatin	7
DB00812	P1Z	Phenylbutazone	7
DB08496	RWF	(R)-warfarin	7
DB09213	IBP	Dexibuprofen	7
DB00150	TRP	Tryptophan	6
DB01646	AME	N-Acetylmethionine	6
DB03017	DAO	Lauric acid	6
DB04257	PAM	Palmitoleic Acid	6
DB00141	NAG	N-Acetylglucosamine	5

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MYR	MYRISTIC ACID	220
PLM	PALMITIC ACID	75
SIN	SUCCINIC ACID	26
CL	CHLORIDE ION	22
PRO	PROLINE	22
T44	3,5,3',5'-TETRAIODO-L-THYRONINE	21
OCA	OCTANOIC ACID (CAPRYLIC ACID)	18
ZNmetal	ZINC ION	17
DIU	2-HYDROXY-3,5-DIIODO-BENZOIC ACID	16
DIF	2-[2,6-DICHLOROPHENYL)AMINO]BENZENEACETIC ACID	15
LMR	(2S)-2-hydroxybutanedioic acid	15
UNX	UNKNOWN ATOM OR ION	15
NPS	(2S)-2-(6-methoxynaphthalen-2-yl)propanoic acid	14
CAmetal	CALCIUM ION	13
IMN	INDOMETHACIN	13
JEF	O-(O-(2-AMINOPROPYL)-O'-(2-METHOXYETHYL)POLYPROPYLENE GLYCOL 500)	12
COmetal	COBALT (II) ION	11
9SC	7-[4-[4-[2,3-bis(chloranyl)phenyl]piperazin-1-yl]butoxy]-3,4-dihydro-1H-quinolin-2-one	10
CPT	Cisplatin	10
OLA	OLEIC ACID	10