1PKN
STRUCTURE OF RABBIT MUSCLE PYRUVATE KINASE COMPLEXED WITH MN2+, K+, AND PYRUVATE
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | d1pkna1 | All beta proteins | PK beta-barrel domain-like | PK beta-barrel domain-like | Pyruvate kinase beta-barrel domain | Pyruvate kinase (PK) | rabbit (Oryctolagus cuniculus ) [TaxId: 9986 ], | SCOPe (2.08) |
A | d1pkna2 | Alpha and beta proteins (a/b) | TIM beta/alpha-barrel | Phosphoenolpyruvate/pyruvate domain | Pyruvate kinase | Pyruvate kinase, N-terminal domain | rabbit (Oryctolagus cuniculus ) [TaxId: 9986 ], | SCOPe (2.08) |
A | d1pkna3 | Alpha and beta proteins (a/b) | Pyruvate kinase C-terminal domain-like | PK C-terminal domain-like | Pyruvate kinase, C-terminal domain | Pyruvate kinase, C-terminal domain | rabbit (Oryctolagus cuniculus ) [TaxId: 9986 ], | SCOPe (2.08) |
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
---|---|---|---|---|---|
A | SCOP2B Superfamily | Phosphoenolpyruvate/pyruvate domain | 8043639 | 3000510 | SCOP2B (2022-06-29) |
A | SCOP2B Superfamily | PK C-terminal domain-like | 8044402 | 3000442 | SCOP2B (2022-06-29) |
A | SCOP2B Superfamily | PK beta-barrel domain-like | 8042524 | 3001296 | SCOP2B (2022-06-29) |
A | SCOP2B Superfamily | Phosphoenolpyruvate/pyruvate domain | 8043639 | 3000510 | 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 | PK_2nd | e1pknA4 | A: beta barrels | X: cradle loop barrel | H: RIFT-related | T: PK beta-barrel domain-like | F: PK_2nd | ECOD (1.6) |
A | PK_1st | e1pknA3 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: PK_1st | ECOD (1.6) |
A | PK_C | e1pknA1 | A: a/b three-layered sandwiches | X: PK C-terminal domain-like (From Topology) | H: PK C-terminal domain-like (From Topology) | T: PK C-terminal domain-like | F: PK_C | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
---|---|---|---|---|---|---|
A | 3.40.1380.20 | Alpha Beta | 3-Layer(aba) Sandwich | Pyruvate Kinase | Chain: A, domain 1 | CATH (4.3.0) |
A | 3.20.20.60 | Alpha Beta | Alpha-Beta Barrel | TIM Barrel | Phosphoenolpyruvate-binding domains | CATH (4.3.0) |
A | 2.40.33.10 | Mainly Beta | Beta Barrel | M1 Pyruvate Kinase | Domain 3 | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
PF00224 | Pyruvate kinase, barrel domain (PK) | Pyruvate kinase, barrel domain | This is the barrel domain of pyruvate kinases. This domain represents the beta/alpha barrel and the small beta-barrel domain inserted within it. The active site is found in a cleft between the two domains [1,2,3,4]. | Domain | |
PF02887 | Pyruvate kinase, alpha/beta domain (PK_C) | Pyruvate kinase, alpha/beta domain | Pyruvate kinase catalyses the final step in glycolysis, the conversion of phosphoenolpyruvate to pyruvate with concomitant phosphorylation of ADP to ATP [1,2]. The structure of several pyruvate kinases from various organisms have been determined [2, ... | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR015795 | Pyruvate kinase, C-terminal | Domain | |
IPR015813 | Pyruvate/Phosphoenolpyruvate kinase-like domain superfamily | Homologous Superfamily | |
IPR011037 | Pyruvate kinase-like, insert domain superfamily | Homologous Superfamily | |
IPR015806 | Pyruvate kinase, insert domain superfamily | Homologous Superfamily | |
IPR036918 | Pyruvate kinase, C-terminal domain superfamily | Homologous Superfamily | |
IPR001697 | Pyruvate kinase | Family | |
IPR018209 | Pyruvate kinase, active site | Active Site | |
IPR040442 | Pyruvate kinase-like domain superfamily | Homologous Superfamily | |
IPR015793 | Pyruvate kinase, barrel | Domain |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
Chains | Enzyme Name | Description | Catalytic Residues |
---|---|---|---|
pyruvate kinase M-CSA #326 | Pyruvate kinase catalyses the final step of glycolysis and is allosterically regulated by fructose-1,6-bisphosphate. It requires two equivalents divalent cation, one of which binds to the enzyme as a complex with the nucleotide substrate, as well as activation by K+. As opposed to mammalian pyruvate kinase, the bacterial enzyme works in a K+ independent manner. The enzyme is also known to catalyse a variety of side reactions, including the decarboxylation of oxalacetate, the enolisation of pyruvate, ATP-dependent phosphorylation of alpha-hydroxy or alpha-thio carboxylates, ATP- and bicarbonate-dependent phosphorylations of fluoride and of hydroxylamine and to also function as an ATP- and bicarbonate-dependent ATPase. These side activities reflect the capacity of the active site to labilise the gamma-phosphate of ATP or to stabilise the enolate of pyruvate [PMID:9308890]. There are four isozymes of pyruvate kinase in mammals (L, R, M1, M2) encoded by two different genes: PKLR and PKM. The L and R isozymes are generated from the PKLR by differential splicing of RNA; the M1 and M2 forms are produced from the PKM gene by differential splicing. L type is major isozyme in the liver, R is found in red cells, M1 is the main form in muscle, heart and brain, and M2 is found in early fetal tissues as well as in most cancer cells. This entry represents the PKM gene products. | EC: 2.7.1.40 (PDB Primary Data) EC: 2.7.11.1 (UniProt) EC: 2.7.10.2 (UniProt) |