ISSN 2756-3707
International Journal of Histology and Cytology ISSN 2447-9535 Vol. 2 (5), pp. 158-160, May, 2015. © International Scholars Journals
Full Length Research Paper
A study of mutant strains of Bacillus with high poly- -hydroxybutyrate (PHB) yield
Hikmet Katırcıoğlu1*, Belma Aslım2, Zehra Nur Yüksekdað2, Nazime Mercan3, Yavuz Beyatlı2
1*Department of Biology Education, Gazi University, Ankara, Turkey
2Department of Biology, Faculty of Science, Gazi University, Ankara, Turkey
3Department of Biology, Faculty of Science, Pamukkale University, Denizli, Turkey
*Corresponding author; Fax: (90) 312 2228483, E-mail: [email protected]; [email protected]
Accepted 23 October, 2014
Abstract
In this study, the putative mutant strains of Bacillus megaterium Y6, B. subtilis K8, B. sphaericus X3 and B. firmus G2 were studied for their poly- -hydroxybutyrate (PHB) production capacities. Mutations were induced by using UV light, acriflavin and 5-bromourasil. Total cell proteins were extracted from 59 strains and compared using SDS-PAGE. For each strain, percentage yield of PHB according to cell dry weight was determined in a range of 1.46-63.45%. PHB production of 8 mutant strains were found to increase in comparison with parental strains. However, no increase in PHB production of mutant strains of B. sphaericus X3 was found. It was also determined that the protein profiles of the mutant strains with high PHB yield generally differed from the protein profiles of parental strains.
Key words: Bacillus, poly- -hydroxybutyrate, PHB, total cell protein.