Enzymes in the Environment: Activity, Ecology and Applications - Chapter 5 ppt
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 5 ppt
... short-chain poly-P was higher in the
internal hyphae (67). Long-chain poly-P seems to be more efficient in transporting Pi from
the extraradical to the intraradical part of the fungi. Activity of enzymes ... Inc.
4)-glucans (53 ).Xyloglucansare -1 ,4-glucanswithsidechainsthatcanhydrogenbond
tocellulosemicrofibrils,cross-linkingthemandrestrainingcellexpansion.Inadditionto
astruct...
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 2 pptx
... Inc.
lakewater.Figures2Band2CshowthatectoenzymesynthesisinDOM-enrichedsamples
wasnolongerrepressedwhentheconcentrationofthereadilyutilizablelowmolecular-
weightmoleculesfellbelowacriticallevel,andpolymericsubstrateshadtobeusedto
supportthegrowthandmetabolismofbacteria.Similarinsituobservationsduringphyto-
planktonbloomdevelopmentandbreakdownwerereportedforβ-glucosidaseactivityin
eutrophicLake...
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 16 pptx
... indicating that the ester probably interfered with nutrient cycling’’
(103). In the former study, urease and acid- and alkaline-phosphatase activities were tem-
porarily reduced, whereas in the ... c
1
and c
2
, ED
50 (1)
, and ED
50 (2)
represent
uninhibited rates and ED
50
values for the full- and partial-inhibition models, respectively; c
2
a/b,
minimum (asympto...
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 1 ppsx
... aspartase-Ca-montmoril-
lonite systems ( 159 ). Deamination of l- and d-glutamic and aspartic amino acids and of
their DL racemic mixtures in the presence of Na-montmorillonite showed a stereoselectiv-
ity ... phenylalanine, proline, methionine,
and cysteine by birnessite, and the role of pyrogallol in influencing their mineralization
have been investigated ( 152 , 153 ). Nit...
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 3 pdf
... Inc.
inthefreeform,andconsequentlyavailableforrapiduptake,remainsunknown.This
adsorptionandtheconcurrentloweravailabilityforbacterialuptakemightcauseanunder-
estimationoftheactualbacterialproductiononandinpolysaccharide-richmaterialsuch
asmarinesnow(44),relativetobacterialenzymeactivity.
ThecouplingbetweenhydrolysisanduptakeofDOMinparticle-associatedandfree
bacteriaisstillnotfullyunderstood.T...
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 4 potx
... Inc.
Althoughthisstudyinvolvedtheuseofageneticallymodifiedmicrobe,themodi -
cationswerenotintendedtohaveafunctionalimpact;theywereinsertedasgeneticmark-
ers.Asecondstudycomparingtheeffectofthesamegeneticallymarkedstraintothatof
afunctionallymodifiedstrainshowedeffectsthataremoreinteresting(36).Theaimof
thisworkwastodeterminetheimpactintherhizosphereofwildtypealongwithfunction-
allyandnonfunc...
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 8 potx
... transforma-
tions include the effect of bonding of β-d-glucosidase to a phenolic copolymer of l-tyro-
sine, pyrogallol, or resorcinol (108) and of linking of urease to tannic acid (49 ,52 ). Sarkar
and ... of
urease and invertase in the early 1990s. Gianfreda and coworkers (50 ) examined the inter-
action of invertase (β-fructosidase) with montmorillonite, aluminum hydroxide,...
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 9 potx
... Inc.
wererepressedbyaddedN;formapleandoak,theseactivitiesincreased.Theresults
suggestedthatwhiterotfungi,whichproduceligninasesinresponsetolowNavailability,
weredisplacedbysupplementalN,slowingthedecompositionofrecalcitrantlitter.
HenriksenandBreland(27)alsofocusedontheroleofNinthedecomposition
process.Usingamicrocosmsystemofwheatstrawandsoil,theyfoundthatcarbonminer-
alization,fungalbiomass,...
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 10 docx
... the years; these include vanilin, indulin, ferrulic acid,
and, most importantly,
14
C-labeled synthetic lignins. Various fungal enzymes are involved
in lignin degradation, including lignin peroxidase, ... strains and the extrac-
tion of enzymes, provide complementary information on enzyme production by emphasi-
zing the potential of the living hyphae and the sum of past a...
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 11 ppsx
... Inc.
possibletofindseveralexplanationstointerpretaproteinadsorptionisotherm,withno
experimentalevidenceavailabletochooseamongthem.TheadvantageoftheNMR
methodisthatitsimultaneouslygivesthequantityofadsorbedprotein,thesurfacecover-
ageofthesolidbytheprotein,andthemonolayerormultilayermodeofadsorption(16).
Onlyknowledgeofthesethreefactorsallowsapossibleunfoldingoftheproteinsonthe
claysurfacestobe...
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