The excision of 8-oxoguanine (oxoG) by the human 8-oxoguanine DNA glycosylase 1 (hOGG1) base-excision repair enzyme was studied by using the QM/MM (M06-2X/6-31G(d,p):OPLS2005) calculation method and nuclear magnetic resonance (NMR) spectroscopy. The calculated glycosylase reaction included excision of the oxoG base, formation of Lys249-ribose enzyme-substrate covalent adduct and formation of a ...

The Arabidopsis transposon Tag1 undergoes late excision during vegetative and germinal development in plants containing 35S-Tag1-GUS constructs. To determine if transcriptional regulation can account for the developmental control of Tag1 excision, the transcriptional activity of Tag1 promoter-GUS fusion constructs of various lengths was examined in transgenic plants. All constructs showed expre...

The influence of gamma-irradiation on P element excision and excision-site repair mechanisms was directly tested by embryonic somatic excision assays. Preblastoderm P[ry+, delta 2-3](99B) embryos, having a stable source of somatically active P transposase, were irradiated previous to injection with P excision indicator plasmids. Frequencies of precise or nearly precise P excision increased with...

OBJECTIVES Compare circular defect with dog-ear deformities excision (CDDE) technique to 3:1 fusiform excision technique when removing facial lesions to analyze which technique provides superior wound closure. METHODS Identical 1-cm circular skin defects were created on bilateral cheek, forehead, and parietal scalp on three fresh cadavers. Similarly, using four fresh cadavers, identical 2-cm ...

Background: Plants and their phytochemicals have immense potential for the management of different types of wound. Salvia multicaulis Vahl. is an evergreen shrub species, which traditionally used as a wound healing agent. Objective: The aim of the present study is to evaluate phytochemicals and wound healing activity of S. multicaulis in an excision wound model. Methods: Preliminary phy...