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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyAconitase iron-sulfur domain 8033064 3001516 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyLeuD/IlvD-like 8043900 3000947 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AAconitase_Ce1fghA2 A: a/b three-layered sandwichesX: The swivelling beta/beta/alpha domainsH: The swivelling beta/beta/alpha domain (From Topology)T: The swivelling beta/beta/alpha domainF: Aconitase_CECOD (1.6)
AAconitasee1fghA4 A: a/b three-layered sandwichesX: Aconitase iron-sulfur domain (From Homology)H: Aconitase iron-sulfur domainT: Aconitase iron-sulfur domainF: AconitaseECOD (1.6)
AAconitasee1fghA3 A: a/b three-layered sandwichesX: Aconitase iron-sulfur domain (From Homology)H: Aconitase iron-sulfur domainT: Aconitase iron-sulfur domain IIF: AconitaseECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.30.499.10 Alpha Beta 2-Layer Sandwich Aconitase domain 3CATH (4.3.0)
A3.40.1060.10 Alpha Beta 3-Layer(aba) Sandwich Aconitase Domain 2CATH (4.3.0)
A3.20.19.10 Alpha Beta Alpha-Beta Barrel Aconitase domain 4CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00330Aconitase family (aconitate hydratase) (Aconitase)Aconitase family (aconitate hydratase)- Family
PF00694Aconitase C-terminal domain (Aconitase_C)Aconitase C-terminal domainMembers of this family usually also match to Pfam:PF00330. This domain undergoes conformational change in the enzyme mechanism [1].Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
ACONITASE

Protein Modification Annotation

Modified Residue(s)
ChainResidue(s)Description
PCA Parent Component: GLN

RESIDAA0031

PSI-MOD :  2-pyrrolidone-5-carboxylic acid (Gln) MOD:00040 , 2-pyrrolidone-5-carboxylic acid (Glu) MOD:00420

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

ChainsEnzyme NameDescriptionCatalytic Residues
aconitate hydratase  M-CSA #552

Aconitase (aconitate hydratase) contains an Fe-S cluster within the active site. This can be in the form 4Fe-4S in which case the enzyme functions as an aconitate hydratase, performing the dehydration-rehydration of citrate to isocitrate via cis-aconitate in the second and third steps of the Krebs cycle. When the Fe-S cluster is in the form 3Fe-4S (cytosolic aconitase) the enzyme functions as an Iron Regulatory Protein (IRP) which binds to a conserved sequence (Iron Responsive Element; IRE) in mRNAs encoding proteins that function in the maintenance of iron homeostasis thus regulating the translation of that mRNA. Aconitase occurs in bacteria, plants, animals and fungi in mitochondrial and cytosolic forms.

Defined by 6 residues: ASP:A-100HIS:A-101ASP:A-165ARG:A-447SER:A-642ARG:A-644
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