Reconstruction of C3 and C4 metabolism in Methylobacterium extorquens AM1 using transposon mutagenesis

Microbiology ◽  
2003 ◽  
Vol 149 (3) ◽  
pp. 601-609 ◽  
Author(s):  
Stephen J. Van Dien ◽  
Yoko Okubo ◽  
Melinda T. Hough ◽  
Natalia Korotkova ◽  
Tricia Taitano ◽  
...  
2003 ◽  
Vol 185 (2) ◽  
pp. 669-673 ◽  
Author(s):  
Christopher J. Marx ◽  
Brooke N. O'Brien ◽  
Jennifer Breezee ◽  
Mary E. Lidstrom

ABSTRACT Ten novel methylotrophy genes of the facultative methylotroph Methylobacterium extorquens AM1 were identified from a transposon mutagenesis screen. One of these genes encodes a product having identity with dihydrofolate reductase (DHFR). This mutant has a C1-defective and methanol-sensitive phenotype that has previously only been observed for strains defective in tetrahydromethanopterin (H4MPT)-dependent formaldehyde oxidation. These results suggest that this gene, dmrA, may encode dihydromethanopterin reductase, an activity analogous to that of DHFR that is required for the final step of H4MPT biosynthesis.


Structure ◽  
2002 ◽  
Vol 10 (8) ◽  
pp. 1127-1137 ◽  
Author(s):  
Ulrich Ermler ◽  
Christoph H. Hagemeier ◽  
Annette Roth ◽  
Ulrike Demmer ◽  
Wolfgang Grabarse ◽  
...  

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