1887

Abstract

SUMMARY: -Methylthreonine (OM) inhibits multiplication and photosynthetic pigment synthesis in and ; it does not inhibit or . Inhibition of multiplication and pigment synthesis may be prevented by -isoleucine. OM also causes the permanent loss of chlorophyll and appreciable loss of carotenoids in and this may be prevented by -isoleucine, α-aminobutyric acid, α-ketobutyric acid, -threonine, -homoserine, or -methionine. α-Ketobutyric acid is most effective on a molar basis and is therefore postulated to be the target of OM inhibition.

Isoleucine plays a role in the biosynthesis of photosynthetic pigments and lipids in , for the incorporation of C--isoleucine radioactivity into both the pigments and lipids is markedly diminished by bleaching agents which prevent pigment synthesis without affecting multiplication, i.e. -methylthreonine or streptomycin. When pigment synthesis is blocked amino acids accumulate in the culture supernate.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-27-1-75
1962-01-01
2019-10-23
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-27-1-75
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error