1973
DOI: 10.1111/j.1432-1033.1973.tb03159.x
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The Pathway of Exogenous and Endogenous Carbohydrate Utilization in Escherichia coli: A Dual Function for the Enzymes of the Maltose Operon

Abstract: The components of the maltose-utilizing system in Escherichia coli ML, i.e. maltose permease, amylomaltase and maltodextrin phosphorylase, were re-investigated, with the following findings :I. The concentrating mechanism (permease) is the rate-limiting step in the maltose-utilizing system. Maltose and higher maltodextrins, up to an average chain length of at least 10 glucosyl units, can be taken up at the same rate. Maltodextrins of an average chain length of 20 glucosyl units are restricted in their uptake, a… Show more

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Cited by 46 publications
(24 citation statements)
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References 33 publications
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“…The cell yield in M63 is proportional to the amount of maltose added up to a t least 8 g/l. Results identical to those listed in Tables 1 and 2 were obtained with the exact synthetic medium used by Palmer et al [ 5 ] . An experiment performed with one of the two strains of Aerobacter aerogenes was done using the modified Czapek medium of Bender and Wallenfels [l].…”
Section: Culture Media and Growth Conditionssupporting
confidence: 73%
See 1 more Smart Citation
“…The cell yield in M63 is proportional to the amount of maltose added up to a t least 8 g/l. Results identical to those listed in Tables 1 and 2 were obtained with the exact synthetic medium used by Palmer et al [ 5 ] . An experiment performed with one of the two strains of Aerobacter aerogenes was done using the modified Czapek medium of Bender and Wallenfels [l].…”
Section: Culture Media and Growth Conditionssupporting
confidence: 73%
“…Unless pullulanase production by E. eoli requires some as yet undefined conditions, the results presented here shed some doubt on the identity on the strain called Escherichia coli ML by Palmer et al [ 5 ] .…”
Section: Enzyme Assaysmentioning
confidence: 75%
“…6. Since, as previously discussed, amylomaltase is presumed not to catalyse the glucosyltransfer reaction : (15) it must be concluded that even the chromatographically purified maltose or even the enzyme, still contained trace amounts of maltotriose and higher maltodextrins, and that these functioned as autocatalytic primers. The proposed reaction sequence of amylomaltase action on such [l-'4C]maltose is outlined below : is shown.…”
Section: Mechanism Of Maltodextrin Priming Of Amjilomaltase Action Onmentioning
confidence: 99%
“…Amylomaltase is an inducible enzyme in E. coli, being specifically induced by maltose and higher maltodextrins [28,29,15]. Co-induced with amylomaltase are maltodextrin permease (the specific maltodextrin-concentrating system) [30] and maltodextrin phosphorylase.…”
Section: The Spec Ficity O J Amylomaltase In Vitro and The Proposed Rmentioning
confidence: 99%
“…This enzyme preparation was reported to be useful for the production of maltose from starch (Takasaki, 1976b); Yamanobe and Takasaki, 1979). Morgan, Adams and Priest (1979) (Palmer, Wober and Whelan~1973). Thus \ve (Konishi et al, 1979) investigated the distribution of pullulanase in the family Enterobacteriaceae.…”
Section: Occurrence Of Pullulanasementioning
confidence: 99%