example of heat transfer from the core to the surface of the earth
![Báo cáo khoa học: Assignment of the [4Fe-4S] clusters of Ech hydrogenase from Methanosarcina barkeri to individual subunits via the characterization of site-directed mutants pdf](https://media.store123doc.com/images/document/14/rc/do/medium_dor1394202044.jpg)
Báo cáo khoa học: Assignment of the [4Fe-4S] clusters of Ech hydrogenase from Methanosarcina barkeri to individual subunits via the characterization of site-directed mutants pdf
Ngày tải lên :
07/03/2014, 21:20
... [20]. The mid-
point potentials of these clusters are pH independent.
Hence, the properties of the iron–sulfur clusters present
in the catalytic core of complex I seem to differ from
those of the ... clusters for
the electron transfer from the [Ni-Fe] centre. In this
context the analysis of the EchF8 mutant is of partic-
ular interest. In this mutant the spin concentration of
the proximal ... an
essential part of the proton translocating machinery
which delivers protons to proton transfer pathways
formed within the membrane part. The protons
required for H
2
formation at the active site...
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Báo cáo khoa học: Kinetics of electron transfer from NADH to the Escherichia coli nitric oxide reductase flavorubredoxin pdf
Ngày tải lên :
16/03/2014, 11:20
... a head -to- tail configuration,
bringing the FMN of one monomer in close proximity
to the Fe-Fe site of the other monomer. It is therefore
likely, though not proven yet, that the dimer is the
functional ... 1.
Reduction of FlRd by flavorubredoxin reductase
Spectral analysis of FlRd is complex due to the partial
overlap of the optical contribution of its redox cofac-
tors. Figure 4 shows the absorption ... homology
modeling of FlRd-reductase (not shown) suggest: (a)
the presence of the residues competent to form
H-bonds with the ribose 2Â-OH and 3Â-OH groups of
NADH, and (b) the absence of a nest of positively
charged...
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Tài liệu Báo cáo khoa học: Structural and mechanistic aspects of flavoproteins: photosynthetic electron transfer from photosystem I to NADP+ doc
Ngày tải lên :
18/02/2014, 11:20
... [48].
Interaction of FNR with the NADP
+
coenzyme
and the hydride transfer event
Once the FAD cofactor of FNR has accepted two
electrons, they have to be transferred to NADP
+
. The
FNR protein ... covers the research carried out in recent years into differ-
ent aspects of the function of the flavoproteins involved in cyanobacterial
photosynthetic electron transfer from photosystem I to NADP
+
, ... protonation – the N5 position.
Electron transfer from PSI to
flavodoxin
Fd and Fld differ in size and in the chemical nature of
their redox cofactors. There is no sequence homology
between them,...
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Báo cáo khoa học: Identification and characterization of 1-Cys peroxiredoxin from Sulfolobus solfataricus and its involvement in the response to oxidative stress pdf
Ngày tải lên :
07/03/2014, 12:20
... O
2
); in the presence of an
electron donor, such as dithiothreitol (DTT), Fe
3+
catalyses the reduction of O
2
to H
2
O
2
, which is further
converted to OH
ã
by the Fenton reaction [18]. The
MCO ... periods of time
(Fig. 3). As shown, the addition of stressors to the cul-
tures inhibits growth without killing the cells.
The hybridizing band in the northern analysis
showed the expected size of ... regu-
latory region of the bcp2 gene. A consensus sequence,
GGUG, with Shine–Dalgarno motifs of the Sulfolobus
species was observed upstream of the ATG start codon
[16]. The 5Â end of the bcp2...
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Báo cáo khoa học: Interaction of an 40 kDa protein from regenerating rat liver with the )148 to )124 region of c-jun complexed with RLjunRP coincides with enhanced c-jun expression in proliferating rat liver pdf
Ngày tải lên :
16/03/2014, 18:20
... formed by the factor(s) binding
on the minor groove of the )148 to )124 region of
c-jun
To establish the nature of interaction b etween trans-acting
factor(s) and t he )148 to )124 r egion of c-jun,drugsthat
specifically ... 2004
The 5Â and 3Â deletion mutants of Jun-25 (Jun-25A a nd
Jun-25B, respectively) were used i n EMSA to establish
whether the interaction of rRLjunRP at the 3Â end of the
)148 to )124 region of ... and regenerating
rat liver with the )148 to )124 region of
c-jun
In order to establish w hether the factors p resent in rRNE-d
bind to the )148 to )124 region of c-jun and form a complex
different...
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An experimental investigation of heat transfer and fluid flow in a rectangular duct with inclined discrete ribs
Ngày tải lên :
05/09/2013, 16:10
... region very close to the heat- transferring surface to break the
viscous sub-layer for augmenting the heat transfer and the core flow should not be unduly disturbed to
limit the increase in friction ... used as the top broad wall of the test section whereas the upper walls of entry and exit
sections of the duct were made of 12 mm thick plywood. The absorber plate is heated from the top by
... increase in the heat transfer due to a gap is that the gap in the inclined rib
releases the air partly belonging to the secondary flow and partly belonging to the main flow through the
gap. As...
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Tài liệu Cancer Pain Management: A perspective from the British Pain Society, supported by the Association for Palliative Medicine and the Royal College of General Practitioners docx
Ngày tải lên :
14/02/2014, 21:20
... activation of G-protein coupled
receptors on neurons, which open potassium channels to hyperpolarise their membranes. Opioids
dier in terms of their anity to bind to the receptor sites, their ... psychosocial factors inuencing the experience of pain will include:
ã the patients understanding of their condition.
ã what the pain means to the individual and their family.
ã how the pain may ... directed at physicians and other healthcare professionals who treat pain from cancer at any stage of the
disease with the hope of raising awareness of the types of therapies that may be appropriate...
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Báo cáo khoa học: Studies on structure–function relationships of indolepyruvate decarboxylase from Enterobacter cloacae, a key enzyme of the indole acetic acid pathway ppt
Ngày tải lên :
08/03/2014, 02:20
... addition
of the cofactors. The enzyme is destabilized at low ionic
strength. The stability of EcIPDC in aqueous solutions is
higher than that of other PDCs. The rate constant of
inactivation of PDC from ... mechanism of cofactor binding as
Fig. 6. Progress curves of the reconstitution of EcIPDC with ThDP
measured by restoration of the catalytic activity of the formed holo-
enzyme for the substrate ... m
M
ThDP,
Fig. 1. Scheme of the postulated biosynthesis pathway of indole-3-acetate from
L
-tryptophan in E. cloacae including the keto-enol tautomerism of
indolepyruvate, modified according to Koga et al.[7].1,
L
-tryptophan...
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The NINCH Guide to Good Practice in the Digital Representation and Management of Cultural Heritage Materials pptx
Ngày tải lên :
08/03/2014, 14:20
... how they can most effectively
contribute to the project. The key to successful delivery of projects is management. The
diagram below incorporates elements from all of the projects surveyed, from ... analog
sources, the physical materials themselves, or, in the case of born digital material, the
digital collections, rather than in response to the nature of the available technology or
other pressures. ... in the mid-nineteenth century. In order
to have a retaining edge for the frame, the letters around the edge of the verso of each leaf
were covered, obscuring hundreds of letters from view. The...
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Báo cáo khoa học: Effects of salt on the kinetics and thermodynamic stability of endonuclease I from Vibrio salmonicida and Vibrio cholerae potx
Ngày tải lên :
16/03/2014, 06:20
... enable the enzymes to
release the products more easily, thus leading to the
observed increase in the k
cat
values of three of the vari-
ants. Similarly, the seven-fold higher k
cat
value of the
hyperactive ... affected
by the NaCl concentration, similar to the surface
charge of the enzyme. The higher positive charge of
VsEndA therefore decreases K
m
, but this is a method
of coping with the charge shielding of ... [11]. The reason for the
small DT
m
may be linked to the charged residues, as
the hydrophobic cores of the two enzymes are similar.
The extra salt bridges in the C-terminus of VcEndA
and the smaller...
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Báo cáo khoa học: Mercury(II) binding to metallothioneins Variables governing the formation and structural features of the mammalian Hg-MT species pptx
Ngày tải lên :
16/03/2014, 18:20
... that
the stoichiometries of the Hg-bMT species become
dependent on t and X after t he forma tion of Hg
7
-bMT.
Comparison of the three sets of CD data indicates that the
degree of chirality of the ... this, there is a minor effect of
t and X at the b eginning and end o f the titration. Thus,
the addition of the first 4–6 of Hg(II) to apo-MT gives
rise to Hg-MT species of comparable stoichiometry ... provide information on the binding of Hg(II) to
the corresponding apo-MT form [23]. In a ddition, compar-
ison of the two sets of data gives an indication of the role of
Zn(II) in the Hg(II)-containing...
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High Degree of Adherence to Statin Therapy Among the Elderly Despite High Frequency of Side Effects doc
Ngày tải lên :
22/03/2014, 14:20
... of therapy to another statin is mainly on the
basis of side effects, or if the intended target value
of blood lipids cannot be reached. The other statins
marketed in Sweden, representing the ... remaining 17%
of the market share, are atorvastatin, rosuvastatin,
pravastatin, and uvastatin. Of these, atorvastatin is
the most common (14%); the other 3 are only used by
3% of those treated ...
adhere to the treatment and to receive the full benets
of statin therapy.
The aims of the present study were:
ã to investigate adherence and side effects of statin
therapy in elderly patients...
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Rethinking the design of the Internet: The end to end arguments vs. the brave new world docx
Ngày tải lên :
23/03/2014, 03:20
... not only from the core of the network but from the application 711
layer as well, and positioned outside the network all together. 712
27
25 As opposed to taxation of the use of the Internet ...
complexity to communications. For most of the history of the telephone system, the called telephone (and thus the person
answering the phone) had no idea what the number of the caller was. Then the ... Internet, and of a loss of control by the 789
user. Whether one chooses to see these trends as a natural part of the growing up of the Internet 790
or the fencing of the West, they are happening....
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Báo cáo khoa học: Expressed as the sole Hsp90 of yeast, the a and b isoforms of human Hsp90 differ with regard to their capacities for activation of certain client proteins, whereas only Hsp90b generates sensitivity to the Hsp90 inhibitor radicicol pdf
Ngày tải lên :
23/03/2014, 07:20
... due to the
low level of (Hsf1p-directed) Hsp90 expression in these
cells [14,22].
To find whether heat activation of the Hsf1p CT
domain is defective in our strains expressing a single
Hsp90 isoform ... galactose plates. (B) Analysis of the levels of protein
tyrosine phosphorylation before (–) or 1 h after (+) transfer of these
PP30[hHsp90a] and PP30[hHsp90b] transformants from glucose to
galactose ... has two isoforms of cytosolic Hsp90, one
constitutively expressed at high level (Hsc82) and the
other strongly heat- inducible (Hsp82) [7], these
most probably arose as the result of the ancestral
Keywords
chaperone...
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Báo cáo khoa học: The )148 to )124 region of c-jun interacts with a positive regulatory factor in rat liver and enhances transcription Dipali Sharma*, Sujata Ohri and Aparna Dixit ppt
Ngày tải lên :
23/03/2014, 20:22
... complete
loss of complex formation) results in the dissociation of the
dimers and the monomers are not able to bind to the )148
to )124 region of c-jun.
This study thus provides an insight into the molecular
mechanisms ... )148 to )124 region
of c-jun in the presence of much higher excess of fragmented
calf thymus DNA to inspect the specificity of the interac-
tions between RLjunRP and the )148 to )124 region of
c-jun. ... reflect the biology of a normal cell. We
now report the identification of a positive regulatory factor
from normal rat liver that activates transcription from the
c-jun promoter by binding to the...
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