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Production of a lipolytic enzyme originating from Bacillus halodurans LBB2 in the methylotrophic yeast Pichia pastoris

Ramchuran, Santosh LU ; Vargas Calle, Virginia LU ; Hatti-Kaul, Rajni LU and Nordberg Karlsson, Eva LU orcid (2006) In Applied Microbiology and Biotechnology 71(4). p.463-472
Abstract
A gene encoding a lipolytic enzyme amplified from the alkaliphilic bacterium Bacillus halodurans LBB2 was cloned into the pPICZ alpha B vector and integrated into the genome of the protease deficient yeast strain Pichia pastoris SMD1168H. This previously undescribed enzyme was produced in active form, and cloning in frame with the Saccharomyces cerevisiae secretion signal (alpha-factor) enabled extracellular accumulation of correctly processed enzyme, with an apparent molecular mass of 30 kDa. In shake-flask cultivations, very low production levels were obtained, but these were significantly improved by use of a "batch-induced" cultivation technique which allowed a maximum enzyme activity of 14,000 U/l using p-nitrophenyl butyrate (C-4) as... (More)
A gene encoding a lipolytic enzyme amplified from the alkaliphilic bacterium Bacillus halodurans LBB2 was cloned into the pPICZ alpha B vector and integrated into the genome of the protease deficient yeast strain Pichia pastoris SMD1168H. This previously undescribed enzyme was produced in active form, and cloning in frame with the Saccharomyces cerevisiae secretion signal (alpha-factor) enabled extracellular accumulation of correctly processed enzyme, with an apparent molecular mass of 30 kDa. In shake-flask cultivations, very low production levels were obtained, but these were significantly improved by use of a "batch-induced" cultivation technique which allowed a maximum enzyme activity of 14,000 U/l using p-nitrophenyl butyrate (C-4) as a substrate and a final extracellular lipolytic enzyme concentration of approximately 0.2 g/l. Partial characterization of the produced enzyme (at pH 9) revealed a preference for the short-chain ester (C-4) and significant but lower activity towards medium (C5-C6) and long (C16 and C18) fatty acid chain-length esters. In addition, the enzyme exhibited true lipase activity (7,300 U/l) using olive oil as substrate and significant levels of phospholipase activity (6,400 U/l) by use of a phosphatidylcholine substrate, but no lysophospholipase activity was detected using a lysophosphatidylcholine substrate. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Microbiology and Biotechnology
volume
71
issue
4
pages
463 - 472
publisher
Springer
external identifiers
  • wos:000239020100012
  • pmid:16220263
  • scopus:33745936579
ISSN
1432-0614
DOI
10.1007/s00253-005-0160-1
language
English
LU publication?
yes
id
cebb16e2-1714-4175-a2d8-12ca2323b718 (old id 402414)
date added to LUP
2016-04-01 15:56:19
date last changed
2021-04-27 05:45:11
@article{cebb16e2-1714-4175-a2d8-12ca2323b718,
  abstract     = {A gene encoding a lipolytic enzyme amplified from the alkaliphilic bacterium Bacillus halodurans LBB2 was cloned into the pPICZ alpha B vector and integrated into the genome of the protease deficient yeast strain Pichia pastoris SMD1168H. This previously undescribed enzyme was produced in active form, and cloning in frame with the Saccharomyces cerevisiae secretion signal (alpha-factor) enabled extracellular accumulation of correctly processed enzyme, with an apparent molecular mass of 30 kDa. In shake-flask cultivations, very low production levels were obtained, but these were significantly improved by use of a "batch-induced" cultivation technique which allowed a maximum enzyme activity of 14,000 U/l using p-nitrophenyl butyrate (C-4) as a substrate and a final extracellular lipolytic enzyme concentration of approximately 0.2 g/l. Partial characterization of the produced enzyme (at pH 9) revealed a preference for the short-chain ester (C-4) and significant but lower activity towards medium (C5-C6) and long (C16 and C18) fatty acid chain-length esters. In addition, the enzyme exhibited true lipase activity (7,300 U/l) using olive oil as substrate and significant levels of phospholipase activity (6,400 U/l) by use of a phosphatidylcholine substrate, but no lysophospholipase activity was detected using a lysophosphatidylcholine substrate.},
  author       = {Ramchuran, Santosh and Vargas Calle, Virginia and Hatti-Kaul, Rajni and Nordberg Karlsson, Eva},
  issn         = {1432-0614},
  language     = {eng},
  number       = {4},
  pages        = {463--472},
  publisher    = {Springer},
  series       = {Applied Microbiology and Biotechnology},
  title        = {Production of a lipolytic enzyme originating from Bacillus halodurans LBB2 in the methylotrophic yeast Pichia pastoris},
  url          = {http://dx.doi.org/10.1007/s00253-005-0160-1},
  doi          = {10.1007/s00253-005-0160-1},
  volume       = {71},
  year         = {2006},
}