X-group (possible homology)

318 Ribosomal protein L6

Open in classification tree →

Ligands and drugs

6,352

Member domains

476

with ligand contacts (≤ 4 Å)

7.5% of members

161

with DrugDomain annotations

2.5% of members

with a DrugBank compound

<0.1% 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	9	5.3	1.69×	q = 0.06
Mixed metal/non-metal compounds	2	0.2	8.78×	not tested
Organic oxygen compounds	1	2.2	0.46×	not tested
Nucleosides, nucleotides, and analogues	1	3.0	0.33×	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
DB00515	CPT	Cisplatin	2
DB00131	AMP	Adenosine phosphate	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MGmetal	MAGNESIUM ION	363
OHX	osmium (III) hexammine	67
CL	CHLORIDE ION	60
Kmetal	POTASSIUM ION	11
UNX	UNKNOWN ATOM OR ION	9
8UZ	TC007	2
AMP	ADENOSINE MONOPHOSPHATE	2
6UQ	(2R,3S,4R,6S)-4-hydroxy-6-{[(2R,3aR,4R,4'R,5'S,6S,6'R,7aR)-4'-hydroxy-6-{[(2S,3R,4R,5S,6R)-3-hydroxy-2-{[(2R,3S,4S,5S,6S)-4-hydroxy-6-({(2R,3aS,3a'R,6S,6'R,7R,7'R,7aR,7a'R)-7'-hydroxy-7'-[(1S)-1-hydroxyethyl]-6'-methyl-7-[(2-methylpropanoyl)oxy]octahydro-4H-2,4'-spirobi[[1,3]dioxolo[4,5-c]pyran]-6-yl}oxy)-5-methoxy-2-(methoxymethyl)tetrahydro-2H-pyran-3-yl]oxy}-5-methoxy-6-methyltetrahydro-2H-pyran-4-yl]oxy}-4,6',7a-trimethyloctahydro-4H-spiro[1,3-dioxolo[4,5-c]pyran-2,2'-pyran]-5'-yl]oxy}-2-methyltetrahydro-2H-pyran-3-yl 3,5-dichloro-4-hydroxy-2-methoxy-6-methylbenzoate (non-preferred name)	1
NAmetal	SODIUM ION	1
PAR	PAROMOMYCIN	1