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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2005-11-21
pubmed:abstractText
The Arthromyces ramosus peroxidase gene (arp) was genetically fused to either the 5'- or 3'-terminal ends of the gene encoding llama variable heavy chain antibody fragment V(HH) R9, resulting in the fusion expression cassettes ARP-R9 or R9-ARP. Aspergillus awamori transformants were obtained which produced up to 30 mgl(-1) fusion protein in the culture medium. Both fusion proteins showed peroxidase activity in an ABTS activity test. Considerable amounts of fusion protein were detected intracellularly, suggesting that the fungus encounters problems in secreting these kind of proteins. ELISA experiments showed that ARP-R9 was less able to bind its antigen, the azo-dye RR6, as compared to R9-ARP. Furthermore, in contrast to R9-ARP, ARP-R9 bound to RR6 did not show peroxidase activity anymore. These results indicate that fusion of ARP to the C-terminus of the antibody fragment V(HH) R9 (R9-ARP) is the preferred orientation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0168-1656
pubmed:author
pubmed:issnType
Print
pubmed:day
6
pubmed:volume
120
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
347-59
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Production of bifunctional proteins by Aspergillus awamori: llama variable heavy chain antibody fragment (V(HH)) R9 coupled to Arthromyces ramosus peroxidase (ARP).
pubmed:affiliation
TNO Quality of Life, Department of Microbiology, Utrechtseweg 48, P.O.Box 360, 3700 AJ Zeist, The Netherlands. vivi.joosten@wur.nl
pubmed:publicationType
Journal Article