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Development of a reporter peptide that catalytically produces a fluorescent signal through ?-complementation.


ABSTRACT: In ?-complementation, inactive N-terminal (?-domain) and C-terminal (?-domain) fragments of ?-galactosidase associate to reconstitute the active protein. To date, the effect of ?-domain size on ?-complementation activity has not been systematically investigated. In this study, we compared the complementation activities of ?-domains of various sizes using an in vitro system. We found that the complementation activities are similar for ?-domains comprising between 45 and 229 N-terminal residues but are significantly decreased for those containing less than 37 residues. However, these smaller ?-domains (15 and 25 residues) exhibited sufficient ?-complementation activity for application as reporters.

SUBMITTER: Nishiyama K 

PROVIDER: S-EPMC4420511 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature

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Development of a reporter peptide that catalytically produces a fluorescent signal through α-complementation.

Nishiyama Kotaro K   Ichihashi Norikazu N   Kazuta Yasuaki Y   Yomo Tetsuya T  

Protein science : a publication of the Protein Society 20150402 5


In α-complementation, inactive N-terminal (α-domain) and C-terminal (ω-domain) fragments of β-galactosidase associate to reconstitute the active protein. To date, the effect of α-domain size on α-complementation activity has not been systematically investigated. In this study, we compared the complementation activities of α-domains of various sizes using an in vitro system. We found that the complementation activities are similar for α-domains comprising between 45 and 229 N-terminal residues bu  ...[more]

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