1L2L

Crystal structure of ADP-dependent glucokinase from a Pyrococcus Horikoshii

Summary for 1L2L

• Entry DOI: 10.2210/pdb1l2l/pdb
• Descriptor: ADP-dependent Glucokinase (2 entities in total)
• Functional Keywords: adp glucokinase apo, transferase
• Biological source: Pyrococcus horikoshii
• Cellular location: Cytoplasm (By similarity): O58328
• Total number of polymer chains: 1
• Total formula weight: 52166.22

Authors

Tsuge, H.,Sakuraba, H.,Katunuma, N.,Ohshima, T. (deposition date: 2002-02-22, release date: 2002-12-30, Last modification date: 2024-03-13)

Primary citation

Tsuge, H.,Sakuraba, H.,Kobe, T.,Kujime, A.,Katunuma, N.,Ohshima, T.
Crystal structure of the ADP-dependent glucokinase from Pyrococcus horikoshii at 2.0-A resolution: a large conformational change in ADP-dependent glucokinase
PROTEIN SCI., 11:2456-2463, 2002

PubMed Abstract: Although ATP is the most common phosphoryl group donor for kinases, some kinases from certain hyperthermophilic archaea such as Pyrococcus horikoshii and Thermococcus litoralis use ADP as the phosphoryl donor. Those are ADP-dependent glucokinases (ADPGK) and phosphofructokinases in their glycolytic pathway. Here, we succeeded in gene cloning the ADPGK from P. horikoshii OT3 (phGK) in Escherichia coli,and in easy preparation of the enzyme, crystallization, and the structure determination of the apo enzyme. Recently, the three-dimensional structure of the ADPGK from T. litoralis (tlGK) in a complex with ADP was reported. The overall structure of two homologous enzymes (56.7%) was basically similar: This means that they consisted of large alpha/beta-domains and small domains. However, a marked adjustment of the two domains, which is a 10-A translation and a 20 degrees rotation from the conserved GG sequence located at the center of the hinge, was observed between the apo-phGK and ADP-tlGK structures. The ADP-binding loop (430-439) was disordered in the apo form. It is suggested that a large conformational change takes place during the enzymatic reaction.

PubMed: 12237466
DOI: 10.1110/ps.0215602

Experimental method

X-RAY DIFFRACTION (2 Å)