Jannaschia sp. CCS1

©Dennis Kunkel Microscopy, Inc.

Ecology and Physiology

Jannaschia sp. CCS1 is a member of the Roseobacter lineage (α-Proteobacteria), an ecologically relevant taxon of marine bacteria abundant in coastal and open ocean surface waters. CCS1 is an aerobic anoxygenic phototroph (AAnP), using bacteriochlorophyll a to harvest energy from light without formation of oxygen. AAnPs have recently been found in ocean surface waters, where they make up a significant fraction of the marine bacterioplankton community, are responsible for a share of the oceanic photosynthetic electron transport flux, and have important implications for the ocean carbon cycle.

Jannaschia sp. CCS1 was isolated from Pacific coastal waters on low-nutrient seawater medium. It is motile, grows slowly, and like other marine AAnPs, produces bacteriochlorophyll a when grown in the dark.

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General features of the Jannaschia sp. strain CCS1
Feature
Total number of coding sequences	4,283
G + C content (%)	62.2
No. of rRNA operons	1
No. of replicons	2
Molecule length by replicon (bp)
Main chromosome	4,317,977
Megaplasmid	NA
Plasmid	86,072
No. of coding sequences
Main chromosome	4,212
Megaplasmid	NA
Plasmid	71
G + C content by replicon (%)
Main chromosome	62.3
Megaplasmid	NA
Plasmid	57.8
No. of rRNA operons by replicon
Main chromosome	1
Megaplasmid	NA
Plasmid	0
Sequence Status	Completed

Roseobacter Genomes