Annotations: 3NQ4

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
AA [auth 1]	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
BA [auth 2]	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
CA [auth 3]	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
DA [auth 4]	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
M	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
N	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
O	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
P	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
Q	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
R	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
S	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
T	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
U	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
V	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
W	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
X	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
Y	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)
Z	SCOP2B Superfamily	Lumazine synthase	8066573	3001085	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	DMRL_synthase	e3nq4A1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
AA [auth 1]	DMRL_synthase	e3nq411	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
B	DMRL_synthase	e3nq4B1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
BA [auth 2]	DMRL_synthase	e3nq421	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
C	DMRL_synthase	e3nq4C1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
CA [auth 3]	DMRL_synthase	e3nq431	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
D	DMRL_synthase	e3nq4D1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
DA [auth 4]	DMRL_synthase	e3nq441	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
E	DMRL_synthase	e3nq4E1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
F	DMRL_synthase	e3nq4F1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
G	DMRL_synthase	e3nq4G1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
H	DMRL_synthase	e3nq4H1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
I	DMRL_synthase	e3nq4I1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
J	DMRL_synthase	e3nq4J1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
K	DMRL_synthase	e3nq4K1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
L	DMRL_synthase	e3nq4L1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
M	DMRL_synthase	e3nq4M1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
N	DMRL_synthase	e3nq4N1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
O	DMRL_synthase	e3nq4O1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
P	DMRL_synthase	e3nq4P1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
Q	DMRL_synthase	e3nq4Q1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
R	DMRL_synthase	e3nq4R1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
S	DMRL_synthase	e3nq4S1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
T	DMRL_synthase	e3nq4T1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
U	DMRL_synthase	e3nq4U1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
V	DMRL_synthase	e3nq4V1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
W	DMRL_synthase	e3nq4W1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
X	DMRL_synthase	e3nq4X1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
Y	DMRL_synthase	e3nq4Y1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)
Z	DMRL_synthase	e3nq4Z1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Lumazine synthase	F: DMRL_synthase	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
AA [auth 1]	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
B	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
BA [auth 2]	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
C	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
CA [auth 3]	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
D	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
DA [auth 4]	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
E	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
F	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
G	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
H	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
I	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
J	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
K	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
L	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
M	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
N	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
O	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
P	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
Q	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
R	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
S	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
T	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
U	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
V	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
W	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
X	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
Y	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)
Z	3.40.50.960	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Lumazine/riboflavin synthase	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, AA [auth 1], B, BA [auth 2], C, A, AA [auth 1], B, BA [auth 2], C, CA [auth 3], D, DA [auth 4], E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z	PF00885	6,7-dimethyl-8-ribityllumazine synthase (DMRL_synthase)	6,7-dimethyl-8-ribityllumazine synthase	This family includes the beta chain of 6,7-dimethyl-8- ribityllumazine synthase EC:2.5.1.9, an enzyme involved in riboflavin biosynthesis. The family also includes a subfamily of distant archaebacterial proteins that may also have the same function f ...	This family includes the beta chain of 6,7-dimethyl-8- ribityllumazine synthase EC:2.5.1.9, an enzyme involved in riboflavin biosynthesis. The family also includes a subfamily of distant archaebacterial proteins that may also have the same function for example Swiss:O28856. The family contains a number of different subsets including a family of proteins comprising archaeal lumazine and riboflavin synthases, type I lumazine synthases, and the eubacterial type II lumazine synthases [1]. It has been established that lumazine synthase catalyses the penultimate step in the biosynthesis of riboflavin in plants and microorganisms. The type I lumazine synthases area active in pentameric or icosahedral quaternary assemblies, whereas the type II are decameric [2]. Brucella, a bacterial genus that causes brucellosis, and other Rhizobiales have an atypical riboflavin metabolic pathway. Brucella spp code for both a type-I and a type-II lumazine synthase, and it has been shown that at least one of these two has to be present in order for Brucella to be viable, showing that in the case of Brucella flavin metabolism is implicated in bacterial virulence [3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, AA [auth 1], B, BA [auth 2], C, A, AA [auth 1], B, BA [auth 2], C, CA [auth 3], D, DA [auth 4], E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z	6,7-dimethyl-8-ribityllumazine synthase	6,7-dimethyl-8-ribityllumazine 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 cellular biosynthetic process flavin-containing compound metabolic process cellular metabolic process vitamin biosynthetic process riboflavin biosynthetic process vitamin metabolic process flavin-containing compound biosynthetic process biosynthetic process metabolic process small molecule metabolic process cellular process water-soluble vitamin metabolic process water-soluble vitamin biosynthetic process small molecule biosynthetic process cellular biosynthetic process flavin-containing compound metabolic process cellular metabolic process vitamin biosynthetic process riboflavin biosynthetic process vitamin metabolic process flavin-containing compound biosynthetic process biosynthetic process metabolic process small molecule metabolic process cellular process water-soluble vitamin metabolic process riboflavin metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol protein-containing complex catalytic complex riboflavin synthase complex transferase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, AA [auth 1], B, BA [auth 2], C, A, AA [auth 1], B, BA [auth 2], C, CA [auth 3], D, DA [auth 4], E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z	IPR036467	Lumazine/riboflavin synthase superfamily	Homologous Superfamily
A, AA [auth 1], B, BA [auth 2], C, A, AA [auth 1], B, BA [auth 2], C, CA [auth 3], D, DA [auth 4], E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z	IPR034964	Lumazine synthase	Family
A, AA [auth 1], B, BA [auth 2], C, A, AA [auth 1], B, BA [auth 2], C, CA [auth 3], D, DA [auth 4], E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z	IPR002180	Lumazine/riboflavin synthase	Family