�ber farblose Diatomeen

Pringsheim, E. G.

doi:10.1007/bf00408949

Cited by 14 publications

(3 citation statements)

References 7 publications

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“…The organisms with amino acid oxidases thus do not possess cell-surface or soluble extracellular proteases that would convert protein to amino acids and thus enhance the amino acid concentrations at cell-surfaces. Such proteases have been reported in only a few phytoplankton such as Ochromonas and Nitzschia (Pringsheim 1951(Pringsheim , 1952, however their presence has not been thoroughly investigated.…”

Section: Discussionmentioning

confidence: 99%

Comparison of cell-surface L-amino acid oxidases from several marine phytoplankton

Palenik¹,

Morel²

1990

Mar. Ecol. Prog. Ser.

110

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Phytoplankton possess cell-surface oxidases that oxidize amino acids and primary amines to produce extracellular H 2 0 2 , NH4+, and a-keto acids (from amino acids) or aldehydes (from primary amines). The NH,+ is subsequently taken up and used for growth. A survey of marine phytoplankton shows that at least 3 genera possess cell-surface L-amino acid oxidases: Pleurochrysis and Pryrnnesium (prymnesiophytes), and Arnphidinium (a dinoflagellate). These enzymes are quite similar, with halfsaturation concentrations of ca 0.1 to 0.5 PM, but differ in their inhibition by the nonspecific protease proteinase K, and a detergent, lithium dodecyl sulfate.

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Section: Discussionmentioning

confidence: 99%

Comparison of cell-surface L-amino acid oxidases from several marine phytoplankton

Palenik¹,

Morel²

1990

Mar. Ecol. Prog. Ser.

110

View full text Add to dashboard Cite

show abstract

“…It is also possible that due to proteolysis the chloroplast may degenerate. The production of proteolytic enzymes by many algae has been reported by many workers (PRINGSHEIM 1951, RUDOLPH 1962, PADMANABHAN et al 1974.…”

Section: Til B I Cmentioning

confidence: 87%

“…Many workers (PRINGSHEIM 1951, RUDOLPH 1963 have reported the existence of proteolytic enzymes in some algae. The proteolytic enzymes are also present in the tea ieaves (DEB and CHAUDHURY 1969).…”

Section: Polyphenol Oxidase Activitymentioning

confidence: 99%