Abstract:
:The wild strain of Serratia marcescens rapidly degraded threonine and formed aminoacetone in a medium containing glucose and urea. Extracts of this strain showed high threonine dehydrogenase and "biosynthetic" threonine deaminase activities, but no threonine aldolase activity. Threonine dehydrogenase-deficient strain Mu-910 was selected among mutants unable to grow on threonine as the carbon source. This strain did not form aminoacetone from threonine, but it slowly degraded threonine. Strain D-60, deficient in both threonine dehydrogenase and threonine deaminase, was derived from strain Mu-910 and barely degraded threonine. A glycine-requiring strain derived from the wild strain grew in minimal medium containing threonine as the glycine source, whereas a glycine-requiring strain derived from strain Mu-910 did not grow. This indicates that threonine dehydrogenase participates in glycine formation from threonine (via alpha-amino-beta-ketobutyrate) as well as in threonine degradation to aminoacetone.
journal_name
J Bacterioljournal_title
Journal of bacteriologyauthors
Komatsubara S,Murata K,Kisumi M,Chibata Idoi
10.1128/JB.135.2.318-323.1978subject
Has Abstractpub_date
1978-08-01 00:00:00pages
318-23issue
2eissn
0021-9193issn
1098-5530journal_volume
135pub_type
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journal_title:Journal of bacteriology
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doi:10.1128/JB.91.5.1977-1985.1966
更新日期:1966-05-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1128/JB.95.4.1425-1430.1968
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journal_title:Journal of bacteriology
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pub_type: 杂志文章
doi:10.1128/jb.174.18.5888-5894.1992
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更新日期:1963-05-01 00:00:00
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更新日期:1996-06-01 00:00:00
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更新日期:1982-02-01 00:00:00