Annotation rule MF_00452
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General rule information [?]

Accession MF_00452
Dates 23-SEP-2001 (Created)
11-JUN-2015 (Last updated, Version 32)
Name PEPCK_GTP
Scope Bacteria
Archaea
Templates Q9AEM1 (PCKG_CORGL); Q9AGJ6 (PCKG_MYCSM); Q6F494 (PCKG_THEKO); A5TYT6 (PCKG_MYCTA): [Recover all]

Propagated annotation [?]


Identifier, protein and gene names [?]

Identifier
PCKG
Protein name
RecName: Full=Phosphoenolpyruvate carboxykinase [GTP];
Short=PEP carboxykinase;
Short=PEPCK;
EC=4.1.1.32;
AltName: Full=GTP-dependent phosphoenolpyruvate carboxykinase;
Short=GTP-PEPCK;
Gene name
pckG

Comments [?]

Function Catalyzes the conversion of oxaloacetate (OAA) to phosphoenolpyruvate (PEP), the rate-limiting step in the metabolic pathway that produces glucose from lactate and other precursors derived from the citric acid cycle.
Catalytic activity GTP + oxaloacetate = GDP + phosphoenolpyruvate + CO(2).
case <FTGroup:1>
Cofactor Mn(2+)
Note: Binds 1 Mn(2+) ion per subunit.
end case
case <OC:Bacteria>
Subunit Monomer.
end case
Subcellular location Cytoplasm.
Similarity Belongs to the phosphoenolpyruvate carboxykinase [GTP] family.

Keywords [?]

case <FTGroup:1>
end case

Gene Ontology [?]

GO:0005525; Molecular function: GTP binding.
GO:0004613; Molecular function: phosphoenolpyruvate carboxykinase (GTP) activity.
case <FTGroup:1>
GO:0030145; Molecular function: manganese ion binding.
end case
GO:0006094; Biological process: gluconeogenesis.
GO:0005737; Cellular component: cytoplasm.

Cross-references [?]

Pfam PF00821; PEPCK; 1;
PROSITE PS00505; PEPCK_GTP; 1;

Features [?]

From: PCKG_MYCTA (A5TYT6)
Key     From     To       Description   Tag   Condition   FTGroup
NP_BIND (Optional)     272     277       GTP     [AGSQM]-[CS]-G-K-T-[NS]  
NP_BIND (Optional)     515     518       GTP     [FY]-x-x-N  
REGION     220     222       Substrate binding     Y-x-G  
REGION     387     389       Substrate binding     N-x-R  
ACT_SITE     273     273             [CS]  
METAL     229     229       Manganese     K   1
METAL     249     249       Manganese; via tele nitrogen     H   1
METAL     296     296       Manganese     D   1
BINDING     81     81       Substrate     R  
BINDING     271     271       Substrate     S  
BINDING     389     389       GTP     R  
BINDING     420     420       GTP     R  

Additional information [?]

Size range 588-624 amino acids
Related rules None
Fusion None
Comments The enzyme from THEKO is shown to be a homotetramer.