Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2001-12-13
pubmed:abstractText
Phytases are hydrolytic enzymes that initiate the release of phosphate from phytate (myo-inositol hexakisphosphate), the major phosphorus (P) form in animal feeds of plant origin. These enzymes can be supplemented in diets for food animals to improve P nutrition and to reduce P pollution of animal excreta. This mini-review provides a synopsis of the concept of "ideal phytase" and the biotechnological approaches for developing such an enzyme. Examples of Escherichia coli AppA and Aspergillus fumigatus PhyA are presented to illustrate how new phytases are identified from microorganisms and developed by genetic engineering based on the gene sequences and protein structures of these enzymes. We also discuss the characteristics of different heterologous phytase expression systems, including those of plants, bacteria, fungi, and yeast.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0175-7598
pubmed:author
pubmed:issnType
Print
pubmed:volume
57
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
474-81
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Biotechnological development of effective phytases for mineral nutrition and environmental protection.
pubmed:affiliation
Department of Animal Science, Cornell University, Ithaca, New York 14853, USA. XL20@cornell.edu
pubmed:publicationType
Journal Article, Review, Research Support, Non-U.S. Gov't