SciELO - Scientific Electronic Library Online

vol.50Expression of cocaine- and amphetamine-regulated transcript (CART) in hen ovaryBRD4 inhibition suppresses cell growth, migration and invasion of salivary adenoid cystic carcinoma author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google


Biological Research

Print version ISSN 0716-9760


BADSHAH, Syed Lal; MABKHOT, Yahia  and  AL–SHOWIMAN, Salim S.. Photosynthesis at the far-red region of the spectrum in Acaryochloris marina. Biol. Res. [online]. 2017, vol.50, 16. ISSN 0716-9760.

Acaryochloris marina is an oxygenic cyanobacterium that utilizes far–red light for photosynthesis. It has an expanded genome, which helps in its adaptability to the environment, where it can survive on low energy photons. Its major light absorbing pigment is chlorophyll d and it has α–carotene as a major carotenoid. Light harvesting antenna includes the external phycobilin binding proteins, which are hexameric rods made of phycocyanin and allophycocyanins, while the small integral membrane bound chlorophyll binding proteins are also present. There is specific chlorophyll a molecule in both the reaction center of Photosystem I (PSI) and PSII, but majority of the reaction center consists of chlorophyll d. The composition of the PSII reaction center is debatable especially the role and position of chlorophyll a in it. Here we discuss the photosystems of this bacterium and its related biology.

Keywords : Oxygenic photosynthesis; Acaryochloris species; Chlorophyll d; Photosystem; Phycobillisomes; P740.

        · text in English     · English ( pdf )