Bacterial Proteins; Geobacillus stearothermophilus/enzymology; Multienzyme Complexes/chemistry; Phosphoglycerate Kinase/chemistry; Phosphoglycerate Kinase/genetics; Thermotoga maritima/enzymology; Thermus thermophilus/enzymology; Triose-Phosphate Isomerase/chemistry; Amino Acid Sequence; Archaea/enzymology; Chromatography, Gel/methods; Chromatography, Ion Exchange/methods; Cloning, Molecular; Conserved Sequence; Crystallization; Escherichia coli/genetics; Models, Molecular; Molecular Sequence Data; Multienzyme Complexes/isolation & purification; Phosphoglycerate Kinase/isolation & purification; Protein Conformation; Protein Structure, Secondary; Protein Structure, Tertiary; Recombinant Proteins/chemistry; Recombinant Proteins/isolation & purification; Sequence Alignment; Sequence Homology, Amino Acid; Thermotoga maritima/genetics; Thermus thermophilus/genetics; Triose-Phosphate Isomerase/isolation & purification