Partial purification of the aminopeptidase from the midgut of the human body louse, Pediculus humanus humanus

Citation:
Ochanda JO, Oduor EAC, GALUN R, Imbuga MO, Mumcuoglu KY. "Partial purification of the aminopeptidase from the midgut of the human body louse, Pediculus humanus humanus.". 2000.

Abstract:

The midgut of the human body louse Pediculus humanus humanus contains a thermally stable leucine aminopeptidase, which was detected by agarose gel electrophoresis using l-amino oxidase. Midgut extracts were homogenized in saline or in 1% Triton X-100 and the aminopeptidase was purified by Superose 6 gel filtration chromatography. A peak with enzyme activity that was extracted with or without Triton X-100 was eluted at a molecular weight 67–69 kDa. Non-denaturing polyacrylamide gel electrophoresis resolved one band of molecular weight of 69 kDa for samples that were extracted in a saline buffer. Two closely linked bands of molecular weight 67 kDa and 69 kDa were observed in samples that were extracted in 1% Triton X-100.

Partial purification of the aminopeptidase from the midgut of the human body louse, Pediculus humanus humanus

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