Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comment
. 2018 Jan 16;115(3):445-447.
doi: 10.1073/pnas.1720765115. Epub 2017 Dec 29.

Microbial proteins for organic material degradation in the deep ocean

David L Kirchman  1
Affiliations
Comment

Microbial proteins for organic material degradation in the deep ocean

David L Kirchman. Proc Natl Acad Sci U S A. .
No abstract available

PubMed Disclaimer

Conflict of interest statement

The author declares no conflict of interest.

Figures

Fig. 1.
Fig. 1.
Sources of organic material in the deep ocean and relative abundance of transport proteins. Heterotrophic microbes use dissolved organic material (DOM1) released by phytoplankton in the surface layer. Below the euphotic zone, microbes can use DOM exported to deep waters (DOM2) or DOM from the solubilization of sinking organisms and detritus. The composition of the organic material may be substantially modified during its descent or after solubilization (DOM3) or it may resemble DOM in the surface layer (DOM1). Dashed lines indicate that the several processes are likely needed to produce DOM. The bar graphs give the relative abundance (± SD of two to four samples) of ABC transporters for the indicated compounds based on data in figure 4 of Bergauer et al. (1). Amines, spermidine and putrescine; Pro-GlyBet, proline and glycine betaine.
See this image and copyright information in PMC

Comment on

References

    1. Bergauer K, et al. Organic matter processing by microbial communities throughout the Atlantic water column as revealed by metaproteomics. Proc Natl Acad Sci USA. 2018;115:E400–E408. - PMC - PubMed
    1. Cho BC, Azam F. Major role of bacteria in biogeochemical fluxes in the ocean’s interior. Nature. 1988;332:441–443.
    1. Karl DM, Knauer GA, Martin JH. Downward flux of particulate organic matter in the ocean: A particle decomposition paradox. Nature. 1988;332:438–441.
    1. Smith DC, Simon M, Alldredge AL, Azam F. Intense hydrolytic enzyme activity on marine aggregates and implications for rapid particle dissolution. Nature. 1992;359:139–142.
    1. Hansell DA. Recalcitrant dissolved organic carbon fractions. Annu Rev Mar Sci. 2013;5:421–445. - PubMed

LinkOut - more resources