Biology:Levan fructotransferase (DFA-IV-forming)
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| Levan fructotransferase (DFA-IV-forming) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 4.2.2.16 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
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The enzyme levan fructotransferase (DFA-IV-forming) (EC 4.2.2.16) catalyzes the following process:
- Produces di-β-D-fructofuranose 2,6′:2′,6-dianhydride (DFA IV) by successively eliminating the diminishing (2→6)-β-D-fructan (levan) chain from the terminal D-fructosyl-D-fructosyl disaccharide
This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is 2→6-β-D-fructan lyase (di-β-D-fructofuranose-2,6′:2′,6-dianhydride-forming).
Other names in common use include 2,6-β-D-fructan D-fructosyl-D-fructosyltransferase (forming, di-β-Dfructofuranose 2,6′:2′,6-dianhydride), and levan fructotransferase.
References
- "Characteristics of levan fructotransferase from Arthrobacter ureafaciens K2032 and difructose anhydride IV formation from levan". Enzyme and Microbial Technology 27 (3–5): 212–218. 2000. doi:10.1016/S0141-0229(00)00135-6.
- Rhee SK; Ryu, EJ; Park, BS; Song, KB; Kang, SA; Kim, CH; Uhm, TB; Park, YI et al. (2003). "Levan fructotransferase from Arthrobacter oxydans J17-21 catalyzes the formation of the di-D-fructose dianhydride IV from levan". J. Agric. Food Chem. 51 (9): 2632–6. doi:10.1021/jf026207o. PMID 12696949.
- "Difructose anhydrides: their mass-production and physiological functions". Biosci. Biotechnol. Biochem. 64 (7): 1321–7. 2000. doi:10.1271/bbb.64.1321. PMID 10945246.
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