2IVG

SITE DIRECTED MUTAGENESIS OF KEY RESIDUES INVOLVED IN THE CATALYTIC MECHANISM OF CYANASE

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2ivga1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d2ivga2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d2ivgb1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d2ivgb2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d2ivgc1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d2ivgc2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D	d2ivgd1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D	d2ivgd2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
E	d2ivge1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
E	d2ivge2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
F	d2ivgf1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
F	d2ivgf2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
G	d2ivgg1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
G	d2ivgg2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
H	d2ivgh1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
H	d2ivgh2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
I	d2ivgi1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
I	d2ivgi2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
J	d2ivgj1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Cyanase N-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
J	d2ivgj2	Alpha and beta proteins (a+b)	Cyanase C-terminal domain	Cyanase C-terminal domain	Cyanase C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Cyanase C-terminal domain	8035792	3001610	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8037199	3000119	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	PRK02866	e2ivgA1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
A	Cyanate_lyase	e2ivgA2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	ECOD (1.6)
B	PRK02866	e2ivgB1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
B	Cyanate_lyase	e2ivgB2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	ECOD (1.6)
C	PRK02866	e2ivgC1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
C	Cyanate_lyase	e2ivgC2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	ECOD (1.6)
D	PRK02866	e2ivgD1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
D	Cyanate_lyase	e2ivgD2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	ECOD (1.6)
E	PRK02866	e2ivgE1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
E	Cyanate_lyase	e2ivgE2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	ECOD (1.6)
F	PRK02866	e2ivgF1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
F	Cyanate_lyase	e2ivgF2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	ECOD (1.6)
G	PRK02866	e2ivgG1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
G	Cyanate_lyase	e2ivgG2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	ECOD (1.6)
H	PRK02866	e2ivgH1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
H	Cyanate_lyase	e2ivgH2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	ECOD (1.6)
I	PRK02866	e2ivgI1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
I	Cyanate_lyase	e2ivgI2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	ECOD (1.6)
J	PRK02866	e2ivgJ1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PRK02866	ECOD (1.6)
J	Cyanate_lyase	e2ivgJ2	A: a+b duplicates or obligate multimers	X: MinE-like	H: Cyanase C-terminal domain (From Topology)	T: Cyanase C-terminal domain	F: Cyanate_lyase	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 LYASE	DNA binding binding organic cyclic compound binding nucleic acid binding lyase activity cyanate hydratase activity catalytic activity carbon-nitrogen lyase activity	organonitrogen compound catabolic process catabolic process organonitrogen compound metabolic process cellular metabolic process cyanate metabolic process cellular nitrogen compound metabolic process organic acid metabolic process cellular nitrogen compound catabolic process cellular catabolic process organic substance metabolic process nitrogen compound metabolic process metabolic process cellular process small molecule metabolic process organonitrogen compound catabolic process catabolic process organonitrogen compound metabolic process cellular metabolic process cyanate metabolic process cellular nitrogen compound metabolic process organic acid metabolic process cellular nitrogen compound catabolic process cellular catabolic process organic substance metabolic process nitrogen compound metabolic process metabolic process cellular process small molecule metabolic process cyanate catabolic process organic substance catabolic 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

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2IVG

SITE DIRECTED MUTAGENESIS OF KEY RESIDUES INVOLVED IN THE CATALYTIC MECHANISM OF CYANASE

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Domain Annotation: ECOD Classification ECOD Database Homepage

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage