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. 1966 Dec;92(6):1689–1697. doi: 10.1128/jb.92.6.1689-1697.1966

Metabolism of d-Mannose in Aerobacter aerogenes: Evidence for a Cyclic Pathway1

M Y Kamel a,2, R L Anderson a
PMCID: PMC316249  PMID: 4289357

Abstract

Kamel, M. Y. (Michigan State University, East Lansing), and R. L. Anderson. Metabolism of d-mannose in Aerobacter aerogenes: evidence for a cyclic pathway. J. Bacteriol. 92:1689–1697. 1966.—Evidence is presented which suggests a cyclic pathway for the constitutive utilization of d-mannose in extracts of Aerobacter aerogenes PRL-R3. d-Mannose is phosphorylated with d-glucose-6-phosphate to yield d-mannose-6-phosphate and d-glucose. d-Glucose-6-phosphate may be regenerated by isomerization of d-mannose-6-phosphate through d-fructose-6-phosphate, or by phosphorylation of d-glucose with adenosine-5′-triphosphate. The pathway involves the participation of four constitutive enzymes: d-glucose-6-phosphate isomerase, d-mannose-6-phosphate isomerase, a stereospecific d-glucokinase, and a phosphotransferase which phosphorylates d-mannose with d-glucose-6-phosphate, acetyl phosphate, or carbamyl phosphate. The absence of d-mannokinase (adenosine-5′-triphosphate:d-mannose phosphotransferase) activity in extracts of this organism suggests that the pathway may be of functional significance. Also, the pathway accounts for an apparent 2-epimerization of d-mannose to d-glucose that was observed in extracts.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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