Annotations: 4Y42

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4y42a1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
A	d4y42a2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
B	d4y42b1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
B	d4y42b2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
C	d4y42c1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
C	d4y42c2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
D	d4y42d1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
D	d4y42d2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
E	d4y42e1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
E	d4y42e2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
F	d4y42f1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
F	d4y42f2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
G	d4y42g1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
G	d4y42g2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
H	d4y42h1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
H	d4y42h2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
I	d4y42i1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
I	d4y42i2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
J	d4y42j1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)
J	d4y42j2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	automated matches	(Serratia proteamaculans 568 ) [TaxId: 399741 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF21291	e4y42A1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
A	PF02560	e4y42A2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)
B	PF21291	e4y42B1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
B	PF02560	e4y42B2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)
C	PF21291	e4y42C2	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
C	PF02560	e4y42C1	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)
D	PF21291	e4y42D1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
D	PF02560	e4y42D2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)
E	PF21291	e4y42E1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
E	PF02560	e4y42E2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)
F	PF21291	e4y42F1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
F	PF02560	e4y42F2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)
G	PF21291	e4y42G1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
G	PF02560	e4y42G2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)
H	PF21291	e4y42H1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
H	PF02560	e4y42H2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)
I	PF21291	e4y42I2	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
I	PF02560	e4y42I1	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)
J	PF21291	e4y42J1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF21291	ECOD (1.6)
J	PF02560	e4y42J2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: PF02560	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
A	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)
B	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
B	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)
C	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
C	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)
D	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
D	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)
E	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
E	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)
F	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
F	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)
G	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
G	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)
H	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
H	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)
I	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
I	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)
J	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
J	3.30.1160.10	Alpha Beta	2-Layer Sandwich	Cyanate Lyase	Chain: A, domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	PF02560	Cyanate lyase C-terminal domain (Cyanate_lyase)	Cyanate lyase C-terminal domain	Cyanate lyase (also known as cyanase) EC:4.2.1.104 is responsible for the hydrolysis of cyanate, allowing organisms that possess the enzyme to overcome the toxicity of environmental cyanate. This enzyme is composed of two domains, an N-terminal helix ...	Cyanate lyase (also known as cyanase) EC:4.2.1.104 is responsible for the hydrolysis of cyanate, allowing organisms that possess the enzyme to overcome the toxicity of environmental cyanate. This enzyme is composed of two domains, an N-terminal helix-turn-helix and this structurally unique C-terminal domain [2].	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	PF21291	Cyanate hydratase, N-terminal (CYNS_N)	Cyanate hydratase, N-terminal	Cyanate hydratase (also known as cyanate lyase) catalyses the reaction of cyanate with bicarbonate to produce ammonia and carbon dioxide, allowing the host organisms to overcome the toxicity of environmental cyanate [1-4]. It consists of an N-termin ...	Cyanate hydratase (also known as cyanate lyase) catalyses the reaction of cyanate with bicarbonate to produce ammonia and carbon dioxide, allowing the host organisms to overcome the toxicity of environmental cyanate [1-4]. It consists of an N-terminal five-helix bundle domain that shows structural similarity to DNA-binding HTH domains and a C-terminal catalytic domain, which has a unique fold [4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	Cyanate hydratase	DNA binding binding organic cyclic compound binding nucleic acid binding lyase activity cyanate hydratase activity catalytic activity carbon-nitrogen lyase activity	organic substance metabolic process organonitrogen compound metabolic process cellular metabolic process cyanate metabolic process small molecule metabolic process metabolic process cellular process organic acid metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR036581	Cyanate lyase, C-terminal domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR008076	Cyanate hydratase	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR003712	Cyanate lyase, C-terminal	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR048564	Cyanate hydratase, N-terminal domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR010982	Lambda repressor-like, DNA-binding domain superfamily	Homologous Superfamily