Annotations: 3A3B

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth A]	V-set	e3a3bA5	A: alpha arrays	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: V-set	ECOD (v295.2)
A [auth B]	MIF	e3a3bB1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: MIF	ECOD (v295.2)
A [auth B]	V-set	e3a3bB3	A: alpha arrays	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: V-set	ECOD (v295.2)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth A]	2.40.30.20	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
A [auth B]	2.40.30.20	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth A]	Lumazine protein	riboflavin synthase activity transferase activity transferase activity, transferring alkyl or aryl (other than methyl) groups catalytic activity	water-soluble vitamin biosynthetic process small molecule biosynthetic process flavin-containing compound metabolic process vitamin biosynthetic process riboflavin biosynthetic process vitamin metabolic process flavin-containing compound biosynthetic process biosynthetic process metabolic process cellular process small molecule metabolic process riboflavin metabolic process	-

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR017938	Riboflavin synthase-like beta-barrel	Homologous Superfamily
A [auth B], B [auth A]	IPR026017	Lumazine-binding domain	Domain
A [auth B], B [auth A]	IPR001783	Lumazine-binding protein	Family
A [auth B], B [auth A]	IPR023366	ATP synthase subunit alpha, N-terminal domain-like superfamily	Homologous Superfamily