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
. 1964 Dec 4;146(3649):1307-9.
doi: 10.1126/science.146.3649.1307.

VITAMIN K COMPOUNDS IN BACTERIA THAT ARE OBLIGATE ANAEROBES

R J GIBBONS, L P ENGLE

VITAMIN K COMPOUNDS IN BACTERIA THAT ARE OBLIGATE ANAEROBES

R J GIBBONS et al. Science. .

Abstract

A naphthoquinone-dependent strain of Bacteroides melaninogenicus has been used in a microbiological assay to survey bacteria for compounds of the vitamin K group. Organisms known to contain vitamin K, as well as several bacteria that are obligate anaerobes, produced substances which satisfied the naphthoquinone requirement of the assay organism. Vitamin K was chemically isolated from strains of Bacteroides melaninogenicus, Bacteroides fragilis, and Veillonella alcalescens.

PubMed Disclaimer

LinkOut - more resources