Siroheme, an iron-containing tetrapyrrole, is the prosthetic group of nitrite reductase (NiR) and sulfite reductase (SiR); it is synthesized from uroporphyrinogen III, an intermediate of chlorophyll biosynthesis, and is required for nitrogen (N) and sulfur (S) assimilation. Further, uroporphyrinogen III methyltransferase (UPM1), responsible for two methylation reactions to form dihydrosirohydro...

The interior o f chlorosomes, the main antenna system o f the photosynthesizing bacterium Chloroßexus aurantiacus, is shown to contain no proteins in a fixed ratio to BChl c and in amounts that could be significant o f direct chromophore-protein complexes. This excludes non-covalent chromophore-protein complexing that has so far been found in all other antennae as the main organizational princi...

background; pollution of drinking water and ice is one of the most serious ways of water borne diseases spread. the purpose of this study was to investigate the bacterial contamination of the ice produced by ice factories in bandar abbas. methods; in this descriptive ,cross-sectional study samples were collected from seven ice factories in bandar abbas. sampling was done by standard method.    ...

In the original version of this Article, the Abstract contains a typographical error. " Additional experimentation illustrated how these effects amplified over time, resulting in greater primary producer biomass sediment chlorophyll a content (Chla) in the longer term ". should read: " Additional experimentation illustrated how these effects amplified over time, resulting in greater primary pro...

Objective:Investigating the microbes and interactions of the beneficial symbiotic relationships between the components of the system ecology in the food chains and life cycles is one of the modern sustainable agriculture topics. In this regard, to evaluate the effects of bacteria and vermicompost on morphological characteristics and yield of soybean an experiment was conducted as split plot in...

Objective:Investigating the microbes and interactions of the beneficial symbiotic relationships between the components of the system ecology in the food chains and life cycles is one of the modern sustainable agriculture topics. In this regard, to evaluate the effects of bacteria and vermicompost on morphological characteristics and yield of soybean an experiment was conducted as split plot in...