Utilization of Diammonium Citrate by Adult Rats

Diammonium citrate and diammonium phosphate as sources of dietary nitrogen for growing-finishing swine.

Lipid metabolism by rat lung in vitro. Utilization of citrate by normal and starved rats.

1. The utilization of [1,5-(14)C(2)]citrate by lung slices and cell cytosol preparations, and the activities of liver and lung cytosol citrate-cleavage enzyme (EC 4.1.3.8), l-malate-NAD oxidoreductase (malate dehydrogenase, EC 1.1.1.37) and phosphoenolpyruvate carboxylase (EC 4.1.1.32) were examined in normal and starved rats. 2. Lipogenesis from citrate was decreased by approx. 70% in both the...

Chromosomal Mutation for Citrate Utilization

A mutant strain of Escherichia coli K-12 that utilizes citrate as a sole source of carbon and energy was isolated. Citrate utilization arose as the consequence of two mutations in genes citA and citB, which are linked to the gal operon. The mutant strain expresses a semiconstitutive citrate transport system, and it utilizes both citrate and isocitrate as carbon and energy sources. It is capable...

Citrate utilization by Escherichia coli: plasmid- and chromosome-encoded systems.

Citrate utilization plasmids have previously been identified in atypical Escherichia coli isolates. A different citrate-utilizing (Cit+) variant of E. coli K-12 arose as a consequence of two chromosomal mutations (B. G. Hall, J. Bacteriol. 151:269-273, 1982). The processes controlling the transport of citrate in both a Cit+ chromosomal mutant and a Cit+ plasmid system were studied. Both systems...

Nucleotide sequence of the gene determining plasmid-mediated citrate utilization.

The citrate utilization determinant from transposon Tn3411 has been cloned and sequenced, and its polypeptide products have been characterized in minicell experiments. The nucleotide sequence was determined for a 2,047-base-pair BglII restriction endonuclease fragment that includes the citrate determinant. This region contains an open reading frame that would encode a 431-amino-acid very hydrop...