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Protein Expression and Purification 2008;57-2   
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doi:10.1016/j.pep.2007.10.001


Thema: 11/ibapublikationen
Institut für Biomedizinische Alternsforschung


IBA Publikation









IBA Publikation





Protein Expression and Purification 2008;57-2   
Open access


Stephan Reitinger, Thorsten Boroviak, Gerhard Laschober, Christine Fehrer, Johannes Müllegger, Herbert Lindner, Günter Lepperdinger
S.  226 - 233
Open access

Elsevier


doi:10.1016/j.pep.2007.10.001
Abstract:
Hyaluronidase from honey bee was recombinantly expressed as a secreted glycoprotein in Pichia pastoris. The active enzyme was produced in milligram quantities per liter of primary culture. When changing the codons of the original transcript to triplet sequences preferred by P. pastoris, no further increase of protein product could be achieved. After expression of a fusion protein by linking hyaluronidase and human serum albumin together with the recognition sequence for the protease, factorXa, fragmented protein products were obtained in the culture supernatant. Only after replacement of the hinge region with a serine-glycine-rich linker, stable full-length fusion protein could be generated. The protein products were purified by cation exchange chromatography at pH 5.0 and pure enzyme fractions were further characterized in detail. The biochemical properties of the product matched those of crude hyaluronidase within bee venom: the native and the recombinant enzyme exhibited activity over a pH range from 3 to 8 (maximum: 3.8), at temperatures as low as 4°C and up to 90°C (maximum 62°C), and at ionic strength as high as 2 M salt. Recombinant bee hyaluronidase efficiently degrades 6-S-chondroitin sulfate (chondroitin sulfate C) as well as 4-S-chondroitin sulfate (chondroitin sulfate A), the latter to a lesser extent. Only very little hydrolase activity towards chondroitin sulfate B (dermatan sulfate) was detectable.

  2009/02/03 15:14:57
Object Identifier:  0xc1aa5576 0x001d4fd9
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epub.oeaw – Institutionelles Repositorium der Österreichischen Akademie der Wissenschaften
epub.oeaw – Institutional Repository of the Austrian Academy of Sciences
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400
http://epub.oeaw.ac.at, e-mail: epub@oeaw.ac.at