PDB 1IRA

X-RAY DIFFRACTION2.70 Å2 chains4 ECOD domains

3D Structure(domains colored, ligands/nucleic acids shown)

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Chain XINTERLEUKIN-1 RECEPTOR ANTAGONISTview chain

1 domain

Chain YINTERLEUKIN-1 RECEPTORview chain

3 domains

#	Chain	Domain ID	Range	Family	Classification
1	X	e1iraX1	X:7-151	IL1	6 → 6.1 → 6.1.1
2	Y	e1iraY1	Y:1-101	Ig_6	11 → 11.1 → 11.1.1
3	Y	e1iraY2	Y:102-204	Ig_2	11 → 11.1 → 11.1.1
4	Y	e1iraY3	Y:205-311	Ig_3	11 → 11.1 → 11.1.1

ECOD domains (colored by index)Unclassified protein regionsNucleic acids (RNA/DNA)Ligands/cofactors