About: Acclimatory responses of the Daphnia pulex proteome to environmental changes. II. Chronic exposure to different temperatures (10 and 20°C) mainly affects protein metabolism

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About: Acclimatory responses of the Daphnia pulex proteome to environmental changes. II. Chronic exposure to different temperatures (10 and 20°C) mainly affects protein metabolism Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Acclimatory responses of the Daphnia pulex proteome to environmental changes. II. Chronic exposure to different temperatures (10 and 20°C) mainly affects protein metabolism
Creator	Fladerer, Claudia Koch, Marita Lamkemeyer, Tobias Madlung, Johannes Pirow, Ralph Schwerin, Susanne Zeis, Bettina Paul, Rüdiger
Source	Medline; PMC
abstract	BACKGROUND: Temperature affects essentially every aspect of the biology of poikilothermic animals including the energy and mass budgets, activity, growth, and reproduction. While thermal effects in ecologically important groups such as daphnids have been intensively studied at the ecosystem level and at least partly at the organismic level, much less is known about the molecular mechanisms underlying the acclimation to different temperatures. By using 2D gel electrophoresis and mass spectrometry, the present study identified the major elements of the temperature-induced subset of the proteome from differently acclimated Daphnia pulex. RESULTS: Specific sets of proteins were found to be differentially expressed in 10°C or 20°C acclimated D. pulex. Most cold-repressed proteins comprised secretory enzymes which are involved in protein digestion (trypsins, chymotrypsins, astacin, carboxypeptidases). The cold-induced sets of proteins included several vitellogenin and actin isoforms (cytoplasmic and muscle-specific), and an AAA+ ATPase. Carbohydrate-modifying enzymes were constitutively expressed or down-regulated in the cold. CONCLUSION: Specific sets of cold-repressed and cold-induced proteins in D. pulex can be related to changes in the cellular demand for amino acids or to the compensatory control of physiological processes. The increase of proteolytic enzyme concentration and the decrease of vitellogenin, actin and total protein concentration between 10°C and 20°C acclimated animals reflect the increased amino-acids demand and the reduced protein reserves in the animal's body. Conversely, the increase of actin concentration in cold-acclimated animals may contribute to a compensatory mechanism which ensures the relative constancy of muscular performance. The sheer number of peptidase genes (serine-peptidase-like: > 200, astacin-like: 36, carboxypeptidase-like: 30) in the D. pulex genome suggests large-scaled gene family expansions that might reflect specific adaptations to the lifestyle of a planktonic filter feeder in a highly variable aquatic environment.
has issue date	2009-04-21(xsd:dateTime)
bibo:doi	10.1186/1472-6793-9-8
bibo:pmid	19383147
has license	cc-by
sha1sum (hex)	61f7459a82d39c89e72c2c8068dbb87f7652dba9
schema:url	https://doi.org/10.1186/1472-6793-9-8
resource representing a document's title	Acclimatory responses of the Daphnia pulex proteome to environmental changes. II. Chronic exposure to different temperatures (10 and 20°C) mainly affects protein metabolism
has PubMed Central identifier	PMC2678069
has PubMed identifier	19383147
schema:publication	BMC Physiol
resource representing a document's body	covid:61f7459a82d39c89e72c2c8068dbb87f7652dba9#body_text
is schema:about of	named entity 'Temperature' named entity 'temperatures' named entity 'ENVIRONMENTAL' covid:arg/61f7459a82d39c89e72c2c8068dbb87f7652dba9 named entity 'PROTEOME' named entity 'UNDERLYING' named entity 'STUDY' named entity 'MUCH' named entity 'POIKILOTHERMIC' named entity 'BACKGROUND' named entity 'DAPHNIA PULEX' named entity 'GROWTH' named entity 'DIFFERENT' named entity 'REPRODUCTION' named entity '2D GEL ELECTROPHORESIS' named entity 'ENERGY' named entity 'ACCLIMATION' named entity 'ASPECT' named entity 'ELEMENTS' named entity 'MECHANISMS' named entity 'ECOSYSTEM' named entity 'DIFFERENT' named entity 'IDENTIFIED' named entity 'MOLECULAR' named entity 'ACTIVITY' named entity 'ABOUT' named entity 'EFFECTS' named entity 'TEMPERATURE' named entity 'SUBSET' named entity 'IMPORTANT' named entity 'BIOLOGY' named entity 'CHANGES' named entity 'RESPONSES' named entity 'PROTEOME' named entity 'INCLUDING' named entity 'CHRONIC EXPOSURE' named entity 'TEMPERATURES' named entity 'PROTEIN METABOLISM' named entity 'MAJOR' named entity '20%' named entity 'DAPHNIA PULEX' named entity 'EXPOSURE TO' named entity 'GROUPS' named entity 'LEVEL' named entity 'MASS SPECTROMETRY' named entity 'HAVE' named entity 'MASS' named entity 'PRESENT' named entity 'ANIMALS' named entity 'KNOWN' named entity 'BUDGETS' named entity 'USING' named entity 'THERMAL' named entity 'ecologically' named entity 'essentially' named entity 'groups' named entity 'environmental' named entity 'poikilothermic' named entity 'proteome' named entity '2D gel electrophoresis' named entity 'Daphnia pulex' named entity 'proteome' named entity 't-Test' named entity 'molecular weight' named entity 'Arenicola marina' named entity 'organelle' named entity 'mass spectrometry' named entity 'cytoplasmic' named entity 'protease' named entity 'statistical analysis' named entity 'Phylogenetic trees' named entity 'vitellogenin' named entity 'physiological' named entity 'oocytes'

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