Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyP-loop nucleotide/nucleoside kinase-like 8054341 3002021 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ASKIe1zioA2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: SKIECOD (1.6)
AADK_lide1zioA1 A: few secondary structure elementsX: Rubredoxin-likeH: Rubredoxin-relatedT: Rubredoxin-relatedF: ADK_lidECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.40.50.300 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolasesCATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00406Adenylate kinase (ADK)Adenylate kinase- Domain
PF05191Adenylate kinase, active site lid (ADK_lid)Adenylate kinase, active site lidComparisons of adenylate kinases have revealed a particular divergence in the active site lid. In some organisms, particularly the Gram-positive bacteria, residues in the lid domain have been mutated to cysteines and these cysteine residues are resp ...Comparisons of adenylate kinases have revealed a particular divergence in the active site lid. In some organisms, particularly the Gram-positive bacteria, residues in the lid domain have been mutated to cysteines and these cysteine residues are responsible for the binding of a zinc ion. The bound zinc ion in the lid domain, is clearly structurally homologous to Zinc-finger domains. However, it is unclear whether the adenylate kinase lid is a novel zinc-finger DNA/RNA binding domain, or that the lid bound zinc serves a purely structural function [1].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
ADENYLATE KINASE

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

ChainsEnzyme NameDescriptionCatalytic Residues
adenylate kinase  M-CSA #290

This family of small, monomeric enzymes is most well known for the ubiquitous Adenylate kinase (EC 2.7.4.3) which serves a crucial role in adenosine phosphate homeostasis; in times of energy need, it enables ADP to be broken down to produce some more ATP, and then when energy is once more abundant it enables the recovery of AMP produced in this and other reactions. At least two other closely related enzymes have been identified - yeast uridylate kinase (no EC no. yet) and slime mould UMP/CMP kinase (EC 2.7.4.14). In all cases Mg(2+) is required for activity.

Defined by 5 residues: LYS:A-13ARG:A-88ARG:A-127ARG:A-160ARG:A-171
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