_EC 2.7.6.5 Gtp diphosphokinase. 3 PDB entries  
EC 2.-.-.- Transferases. [17,769 PDB entries]
EC 2.7.-.- Transferring phosphorous-containing groups. [10,783 PDB entries]
EC 2.7.6.- Diphosphotransferases. [83 PDB entries]
EC 2.7.6.5 Gtp diphosphokinase. [3 PDB entries]    
1vj7

Reaction: Atp + gtp = amp + guanosine 3'-diphosphate 5'-triphosphate.
 


ATP
+
GTP
=
AMP
+
guanosine 3'-diphosphate 5'-triphosphate
Molecule diagrams generated from .mol files obtained from the KEGG ftp site.

Other name(s): Gtp pyrophosphokinase. Guanosine 3',5'-polyphosphate synthase. ppGpp synthetase I. Stringent factor.
Comments: Gdp can also act as acceptor.
Links:   [IntEnz]   [ExPASy]   [KEGG]  

There are 3 PDB entries in enzyme class E.C.2.7.6.5

  PDB code Protein
1vj7
Crystal structure of the bifunctional catalytic fragment of the rela/spot homolog from streptococcus equisimilis.
Source: Streptococcus dysgalactiae subsp. Equi organism_taxid: 119602. Strain: subsp. Equisimilis. Gene: rela, rel, spot, rsh. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chains: A, B (326 residues) CATH domains: Unassigned 3.30.460.10
Bound ligands:   Het Group GDP is 87.50% similar to enzyme reactant GTP
  Het Group GPX is 77.50% similar to enzyme product guanosine
2ko1
Solution nmr structure of the act domain from gtp pyrophosphokinase of chlorobium tepidum. Northeast structural genomics consortium target ctr148a
Source: Chlorobaculum tepidum. Organism_taxid: 1097. Strain: tls. Gene: ct1545, rela. Expressed in: escherichia coli. Expression_system_taxid: 469008.
Chains: A, B (88 residues) CATH domain: 3.30.70.260
3ibw
Crystal structure of the act domain from gtp pyrophosphokinase of chlorobium tepidum. Northeast structural genomics consortium target ctr148a
Source: Chlorobaculum tepidum. Organism_taxid: 1097. Strain: atcc 49652/dsm 12025/tls. Gene: ct1545, rela. Expressed in: escherichia coli bl21(de3). Expression_system_taxid: 469008.
Chains: A, B (79 residues) CATH domain: 3.30.70.260