The enzymes from vertebrates, platyhelminths, mollusks, annelids, crustaceans, insects, algae, some fungi and some bacteria (particularly Gram-negative) require 2,3-bisphospho-D-glycerate as a cofactor. The enzyme is activated by 2,3-bisphospho-D-glycerate by transferring a phosphate to histidine (His10 in man and Escherichia coli, His8 in Saccharomyces cerevisiae). This phosphate can be transferred to the free OH of 2-phospho-D-glycerate, followed by transfer of the phosphate already on the phosphoglycerate back to the histidine. cf. EC 5.4.2.12 phosphoglycerate mutase. The enzyme has no requirement for metal ions. This enzyme also catalyse, slowly, the reactions of EC 5.4.2.4 bisphosphoglycerate mutase.
The enzymes from vertebrates, platyhelminths, mollusks, annelids, crustaceans, insects, algae, some fungi and some bacteria (particularly Gram-negative) require 2,3-bisphospho-D-glycerate as a cofactor. The enzyme is activated by 2,3-bisphospho-D-glycerate by transferring a phosphate to histidine (His10 in man and Escherichia coli, His8 in Saccharomyces cerevisiae). This phosphate can be transferred to the free OH of 2-phospho-D-glycerate, followed by transfer of the phosphate already on the phosphoglycerate back to the histidine. cf. EC 5.4.2.12 phosphoglycerate mutase. The enzyme has no requirement for metal ions. This enzyme also catalyse, slowly, the reactions of EC 5.4.2.4 bisphosphoglycerate mutase.
in early fetal life PGAM-BB is the only isozyme present in all tissues, in myogenesis these phenotypes undergo transition to MM-type via an MB-hybrid, all isozymes are present in mature heart tissue, enzyme activity increases with administration of 3,3'-triiodo-D-thyronine to the animal
in mammalian skeletal muscles, PGM is organized in a regular, striated fashion within the sarcomere. In the absence of the enzyme effectors, PGM localizes mainly at the M-line, but under conditions typical for contracting muscle, the enzyme accumulates within the I-band of the sarcomere
in early fetal life PGAM-BB is the only isozyme present in all tissues, in myogenesis these phenotypes undergo transition to MM-type via a MB-hybrid, only MM-type isozyme is present in mature muscle tissue, enzyme activity increases with administration of 3,3'-triiodo-D-thyronine to the animals
2 * 29000, SDS-PAGE, immunologically the MM-type and BB-type subunits show cross-reactivity as shown by ELISA and immunological neutralization, evidence for common antigenic determinants
2 * 29000, SDS-PAGE, immunologically the MM-type and BB-type subunits show cross-reactivity as shown by ELISA and immunological neutralization, evidence for common antigenic determinants