1DW9

Structure of cyanase reveals that a novel dimeric and decameric arrangement of subunits is required for formation of the enzyme active site

External Resource: Annotation


Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad1dw9a1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Ad1dw9a2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Bd1dw9b1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Bd1dw9b2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Cd1dw9c1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Cd1dw9c2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Dd1dw9d1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Dd1dw9d2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Ed1dw9e1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Ed1dw9e2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Fd1dw9f1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Fd1dw9f2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Gd1dw9g1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Gd1dw9g2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Hd1dw9h1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Hd1dw9h2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Id1dw9i1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Id1dw9i2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Jd1dw9j1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains Cyanase N-terminal domain Cyanase N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Jd1dw9j2 Alpha and beta proteins (a+b) Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain Cyanase C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
ASCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
BSCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
CSCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
DSCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)
ESCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
ESCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)
FSCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
FSCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)
GSCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
GSCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)
HSCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
HSCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)
ISCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
ISCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)
JSCOP2B SuperfamilyCyanase C-terminal domain8035792 3001610 SCOP2B (2022-06-29)
JSCOP2B Superfamilylambda C1 repressor DNA-binding domain-like8037199 3000119 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APRK02866e1dw9A1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
ACyanate_lyasee1dw9A2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)
BPRK02866e1dw9B1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
BCyanate_lyasee1dw9B2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)
CPRK02866e1dw9C1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
CCyanate_lyasee1dw9C2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)
DPRK02866e1dw9D1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
DCyanate_lyasee1dw9D2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)
EPRK02866e1dw9E1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
ECyanate_lyasee1dw9E2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)
FPRK02866e1dw9F1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
FCyanate_lyasee1dw9F2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)
GPRK02866e1dw9G1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
GCyanate_lyasee1dw9G2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)
HPRK02866e1dw9H1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
HCyanate_lyasee1dw9H2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)
IPRK02866e1dw9I1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
ICyanate_lyasee1dw9I2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)
JPRK02866e1dw9J1 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: PRK02866ECOD (1.6)
JCyanate_lyasee1dw9J2 A: a+b duplicates or obligate multimersX: MinE-likeH: Cyanase C-terminal domain (From Topology)T: Cyanase C-terminal domainF: Cyanate_lyaseECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
A3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)
B1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
B3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)
C1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
C3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)
D1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
D3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)
E1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
E3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)
F1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
F3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)
G1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
G3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)
H1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
H3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)
I1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
I3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)
J1.10.260.40 Mainly Alpha Orthogonal Bundle 434 Repressor (Amino-terminal Domain) lambda repressor-like DNA-binding domainsCATH (4.3.0)
J3.30.1160.10 Alpha Beta 2-Layer Sandwich Cyanate Lyase Chain: A, domain 2CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B, C, D, E
PF02560Cyanate lyase C-terminal domain (Cyanate_lyase)Cyanate lyase C-terminal domainCyanate 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
PF21291Cyanate hydratase, N-terminal (CYNS_N)Cyanate hydratase, N-terminalCyanate 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

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B, C, D, E
CYANATE LYASE -

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A, B, C, D, E
IPR036581Cyanate lyase, C-terminal domain superfamilyHomologous Superfamily
A, B, C, D, E
IPR008076Cyanate hydrataseFamily
A, B, C, D, E
IPR003712Cyanate lyase, C-terminalDomain
A, B, C, D, E
IPR048564Cyanate hydratase, N-terminal domainDomain
A, B, C, D, E
IPR010982Lambda repressor-like, DNA-binding domain superfamilyHomologous Superfamily

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
A, D
cyanase  M-CSA #845

Cyanate lyase activity is present in some but not all bacteria. The enzyme detoxifies the cyanate ion, which reacts with nucleophilic groups of proteins. The enzyme is a decamer with unusual 5/2 (D2) symmetry, forming a pentamer of dimers. The active site is dyadic and made up of residues from two adjacent dimers. There are 5 active sites per decamer. The protein fold is unique but shows some similarity to DNA binding proteins such as 434 repressor, but the enzyme is not thought to bind DNA in vivo.

Defined by 3 residues: SER:A-122ARG:D-96GLU:D-99
 | 
 
Explore in 3D: M-CSA Motif Definition
Search M-CSA Motif
EC: 4.3.99.1 (PDB Primary Data)