Poly(aspartic acid) degradation by a Sphingomonas sp. isolated from freshwater

A poly(aspartic acid) degrading bacterium (strain KT-1 [JCM10459]) was isolated from river water and identified as a member of the genus Sphingomonas. The isolate degraded only poly(aspartic acid)s of low molecular masses (<5 kDa), while the cell extract hydrolyzed high-molecular-mass poly(aspart...

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Published inApplied and environmental microbiology Vol. 65; no. 9; pp. 4268 - 4270
Main Authors TABATA, K, KASUYA, K.-I, ABE, H, MASUDA, K, DOI, Y
Format Journal Article
LanguageEnglish
Published Washington, DC American Society for Microbiology 01.09.1999
Subjects
Alphaproteobacteria - growth & development
Alphaproteobacteria - metabolism
Bacteria
Biodegradation, Environmental
Biological and medical sciences
Biology of microorganisms of confirmed or potential industrial interest
Biotechnology
Carbon - metabolism
Environmental and Public Health Microbiology
Fresh Water - microbiology
Fundamental and applied biological sciences. Psychology
Gram-Negative Bacteria - growth & development
Gram-Negative Bacteria - metabolism
Microbiology
Miscellaneous
Mission oriented research
Peptides - metabolism
Phylogeny
RNA, Ribosomal, 16S - genetics
Water Microbiology
Japan
Biodegradation
Bacteria
Isolation
Sphingomonas
River water
Aminoacid polymer
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Summary:A poly(aspartic acid) degrading bacterium (strain KT-1 [JCM10459]) was isolated from river water and identified as a member of the genus Sphingomonas. The isolate degraded only poly(aspartic acid)s of low molecular masses (<5 kDa), while the cell extract hydrolyzed high-molecular-mass poly(aspartic acid)s of 5 to 150 kDa to yield aspartic acid monomer.
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Corresponding author. Mailing address: Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa, Wako-shi, Saitama 351-0198, Japan. Phone: 81-48 (467) 9402. Fax: 81-48 (462) 4667. E-mail: ydoi@postman.riken.go.jp.
ISSN:0099-2240
1098-5336
DOI:10.1128/aem.65.9.4268-4270.1999