New insights into metabolic properties of marine bacteria encoding proteorhodopsins

Autor(en)

Gazalah Sabehi, Alexander Loy, Kwang Hwan Jung, Ranga Partha, Jhon L. Spudich, Tal Isaacson, Joseph Hirschberg, Michael Wagner, Oded Beja

Abstrakt

Proteorhodopsin phototrophy was recently discovered in oceanic surface waters. In an effort to characterize uncultured proteorhodopsin-exploiting bacteria, large-insert bacterial artificial chromosome (BAC) libraries from the Mediterranean Sea and Red Sea were analyzed. Fifty-five BACs carried diverse proteorhodopsin genes, and we confirmed the function of five. We calculate that proteorhodopsin-exploiting bacteria account for 13% of microorganisms in the photic zone. We further show that some proteorhodopsin-containing bacteria possess a retinal biosynthetic pathway and a reverse sulfite reductase operon, employed by prokaryotes oxidizing sulfur compounds. Thus, these novel phototrophs are an unexpectedly large and metabolically diverse component of the marine microbial surface water. Π2005 Sabehi et al.

Organisation(en)

Externe Organisation(en)

Technion - Israel Institute of Technology, Sogang University, Hebrew University Jerusalem

Journal

PLoS Biology

Band

3

Anzahl der Seiten

9

ISSN

1545-7885

Publikationsdatum

2005

Peer-reviewed

Ja

ÖFOS 2012

106022 Mikrobiologie

Sustainable Development Goals

SDG 14 – Leben unter Wasser

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/e81ce017-d544-41cb-8c0b-581792442842