báo cáo khoa học: "Depletion of the heaviest stable N isotope is associated with NH4+/NH3 toxicity in NH4+-fed plants" doc

... mechanisms, such as N- uptake, a ssimila- tion through distinct pathways, internal N recycling in the plant and gaseous N exchange, can discriminate against 15 N[ 4].Furthermore,plantNfractionationis also ... binding energies [47]. Furthermore, the relative abundances of the stable iso- topes in living organisms depend on the isotopic com- position of their food source...

Ngày tải lên: 11/08/2014, 11:20

... pretreatment with intact bikunin or bikunin derivatives is shown in Fig. 6 and Table 1. Exposure of cells to bikunin, bikunin-a and bikunin -n resulted in decrease in the amount of ERK phosphorylation in ... before 100 n M PMA stimulation results in a concentration-depen- dent inhibition of the induction of [ 125 I]DIP-uPA binding (which is associated with u...

Ngày tải lên: 17/03/2014, 11:20

... been associated with enhanced response to adriamycin and cisplatin in androgen dependent b ut not androgen-independent prostate cancer cells [35]. To what extent this variation is true in human ... adducts and fail- ure of induction of apoptosis, reviewed in [2,5,7]. The RNA binding motif protein 3, RBM3, is a glycine rich protein containing a RNA-recognition motif (RRM) t...

Ngày tải lên: 18/06/2014, 16:20

... contains potential N- linked sugar-binding sites [23], the sugar- binding activity of MyroBP is implicated in binding to myrosinase. In the case of At3g16450.1, the protein did not show a significant affinity ... speci- ficity. In some proteins containing tandem homologous domains, inter-domain interactions fix the relative ori- entation of the domains in a specific mult...

Ngày tải lên: 18/02/2014, 14:20

... thrombin and activated protein C inhibition by PCI; this is consistent with a relatively nonspecific heparin-binding site in protein C inhibitor. In contrast to AT, there is no evidence for any sequence-specific ... domains, heparin bridging of PCI and activated protein C is only modest unless calcium ions are present to bind the acidic domain and prevent its interaction with...

Ngày tải lên: 20/02/2014, 02:21

... during the initial 10 min and the maximal extent of internalization was reduced to 39% following 40 min of incubation (Fig. 2). This result indicate s the involvement of clathrin-coated pits in ... sauvagine could be observed in the presence of any of these inhibitors. These findings indicate that neither the activation of PKA nor the activation of PKC is necess...

Ngày tải lên: 30/03/2014, 15:20

Ngày tải lên: 07/08/2014, 23:22

... deficiency in argininosuccinate synthetase (ASS). In the liver, the AGC plays an important role in the urea cycle by providing aspartate for incorporation into argininosuccinate [17]. The mutations ... mutations in the citrin gene in patients affected by CTLN2 cause either truncation of the protein or deletion of a loop between the transmembrane spans [8,16], impair...

Ngày tải lên: 24/03/2014, 04:21

... applications in the biological sciences when the assumption is invalid. H ENDERSON (1975) presented best linear unbiased prediction (BLUP) of random elements for a general linear ... Now suppose that S= .3ZI.T;, then with solutions In practice, B and B-’ may be difficult to construct depending on the definition of S. In such cases, t...

Ngày tải lên: 09/08/2014, 22:23

... generate NO in the e ndothelium [19] and e veninthelumendirectly by dissociating NO from hemoglobin c ontained in ery- throcytes [14,20]. Nitric oxideisabletoinitiateandsus- tain vasodilation [21,22] ... between theory and fact. A German study [26] discovered significant evi- dence for an association of RLS with sequence variations in the NOS1 gene, pointing to a possible involv...

Ngày tải lên: 11/08/2014, 03:21