... considered to be the dominant entry point for protons going into the K channel [21]. Electrochemically induced FTIR difference spectros- copy is a tool to study the reorganization of a protein upon ... calculations indicating that the redox state of the binuclear center in uences the protonation state of a glutamate residue positioned at the cytoplasmic end of the second helix o...
Ngày tải lên: 30/03/2014, 15:20
... One software BioRad, Hercules, CA). Cytokine determination Serum cytokines [Interleukin-2 (IL-2), Interferon gamma (IFN-γ), Interleukin-4 (IL-4), Interluekin-10 (IL-10)] were determined ... no history of infection or vaccination. 4. Cytokines in serum. Similar levels of IL-2, IFN-γ, IL-4, and IL-10 cy- tokines were detected in serum of vaccinated com- pared with non vacci...
Ngày tải lên: 25/10/2012, 11:10
Tài liệu Báo cáo khoa học: "Arabic Tokenization, Part-of-Speech Tagging and Morphological Disambiguation in One Fell Swoop" pdf
... gets tokenized correctly, independently of the number of resulting tokens; the token-based measures refer to the four token fields into which the ATB splits each word determines the ATB tokenization. ... us a total of 71 machine learning features per word. We specify a window of two words preceding and following the current word, using all 71 features for each word in this 5-word w...
Ngày tải lên: 20/02/2014, 15:20
Tài liệu Báo cáo khoa học: "Lexicalized Stochastic Modeling of Constraint-Based Grammars using Log-Linear Measures and EM Training" ppt
...
Ngày tải lên: 20/02/2014, 18:20
Tài liệu Báo cáo khoa học: The crystal structure of coenzyme B12-dependent glycerol dehydratase in complex with cobalamin and propane-1,2-diol pptx
... moiety coordinating to the cobalt atom. Again, this binding mode is quite similar to that of diol dehydratase [9]. Crystallographic indication of the base-on mode of cobalamin binding in class II ... mode of cobalamin binding To identify the Co-coordinating base, EPR spectra of the suicidally inactivated complexes of the enzyme with unla- beled and [imidazole- 15 N 2 ]-lab...
Ngày tải lên: 21/02/2014, 03:20
Báo cáo khoa học: Site specificity of yeast histone acetyltransferase B complex in vivo pot
... levels of histones during the course of HU treatment. To investigate whether HU induces an increase of the Hat1 protein, we used a yeast strain expressing a hemagglutinin (HA)-tagged version of Hat1. ... pro- cess. In yeast, the substitution mutation of Lys5 and Lys12 of histone H4, in combination with deletion of the histone H3 N-terminus, does not result in defective c...
Ngày tải lên: 07/03/2014, 05:20
Báo cáo khoa học: Cloning and characterization of the genes encoding toxic lectins in mistletoe (Viscum album L) pot
... B-chain and position of the carbohydrate-binding sites are indicated. Each B-chain domain is composed of three homologous subdomains a, b, c and linking k subdomain which joins the B-chain to the ... Ile (Ile118 of the ML3p B-chain corresponding to the ricin B-chain Leu117) or Met (Met153 of the ML1p and ML2p B-chains and Met156 of the ML3p B-chain corresponding to the ricin B...
Ngày tải lên: 07/03/2014, 15:20
Báo cáo khoa học: Molecular dynamics structures of peptide nucleic acidÆDNA hybrid in the wild-type and mutated alleles of Ki-ras proto-oncogene ppt
... entropic gain due to interrupted stacking, fluctuating nature of the hydro- gen bond and water organization in the vicinity of the mismatch might be the contributing factors for the increase in free ... give clues towards deciphering the origin of the destabilization and hence, diminution of the melting temperature (T m ) in the former. Base stacking in the vicinity of A C...
Ngày tải lên: 07/03/2014, 21:20
Báo cáo khoa học: Systematic quantification of complex metabolic flux networks using stable isotopes and mass spectrometry pptx
... excess of threonine, methionine and leucine was added in the preculture and reactor feed media to inhibit their synthesis and direct the entire carbon flux through aspartate kinase towards lysine ... (% 10%). Of the other amino acids or organic acids, only valine was detected in trace quantities in the medium. Threonine, methionine and leucine remained in excess throughout the co...
Ngày tải lên: 08/03/2014, 08:20
Báo cáo khoa học: "An Empirical Study of Active Learning with Support Vector Machines for Japanese Word Segmentation" pptx
... chunking. In Proceedings of ACL-2000, pages 117–216. John C. Platt. 1999. Fast training of support vec- tor machines using sequential minimal optimization. In Bernhard Sch¨olkopf, Christopher ... simple. Since we cannot get good performance when using a large pool at the beginning of training, we enlarge gradually a pool of unlabeled examples. The outline of Two Pool Algorithm i...
Ngày tải lên: 17/03/2014, 08:20