Characterization of manganese superoxide dismutase from a marine cyanobacterium Leptolyngbya valderiana BDU20041.

ABSTRACT:

Background

Cyanobacteria are recognized as the primordial organisms to grace the earth with molecular oxygen ~3.5 billion years ago as a result of their oxygenic photosynthesis. This laid a selection pressure for the evolution of antioxidative defense mechanisms to alleviate the toxic effect of active oxygen species (AOS) in cyanobacteria. Superoxide dismutases (SODs) are metalloenzymes that are the first arsenal in defense mechanism against oxidative stress followed by an array of antioxidative system. Unlike other living organisms, cyanobacteria possess multiple isoforms of SOD. Hence, an attempt was made to demonstrate the oxidative stress tolerance ability of marine cyanobacterium, Leptolyngbya valderiana BDU 20041 and to PCR amplify and sequence the SOD gene, the central enzym

SUBMITTER: Priya B 

PROVIDER: S-EPMC2893185 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature