Abstract:
:Cellulose is the most abundant carbohydrate on earth and hydrolyzed by cellulases in nature. During catalysis, cellulase transfers protons to and from the oxygen atoms of the glycosidic bond and a water molecule. Since cellulose is an insoluble polymer, some kinds of cellulases, with high activity toward crystalline cellulose, move on the crystal surface with continuous hydrolysis of the molecular chain. In addition, binding and dissociation on/from the crystal surface are also important elementary steps of the reaction cycle. Recently, these interesting features of cellulases can be directly analyzed, due to the development of visualization techniques. In this chapter, we introduce (1) visualization of the protonation state of the catalytic residue by neutron crystallography, (2) visualization of processive movement on the crystal surface by high-speed atomic force microscopy , and (3) visualization of binding and dissociation events by single-molecule fluorescence microscopy.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Nakamura A,Iino Rdoi
10.1007/978-981-13-2158-0_10subject
Has Abstractpub_date
2018-01-01 00:00:00pages
201-217eissn
0065-2598issn
2214-8019journal_volume
1104pub_type
杂志文章,评审abstract::The ability of polyphenolic compounds to form insoluble complexes with other macro-molecules such as proteins has long been associated with the observed reduction in nutritive value resulting from their inclusion in animal diets. Naturally occurring polyphenols, and in particular condensed tannins isolated from variou...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4757-0022-0_29
更新日期:1986-01-01 00:00:00
abstract::The presence and significance of tumor hypoxia has been recognized since the 1950's. Hypoxic cells in vitro and in animal tumors in vivo are documented to be three times more resistant to radiation-induced killing compared to aerobic cells. There is now evidence that tumor hypoxia is treatment-limiting in many human c...
journal_title:Advances in experimental medicine and biology
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doi:10.1007/978-1-4615-5865-1_26
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abstract::Cell proliferation, apoptosis and differentiation are essential processes from the early phases of embryogenesis to adult tissue formation and maintenance. These mechanisms also play a key role in embryonic stem cells (ESCs) that are able to proliferate maintaining pluripotency and, at the same time, to give rise to a...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:10.1007/5584_2019_423
更新日期:2020-01-01 00:00:00
abstract::Human papillomaviruses (HPVs) infect squamous epithelia and can induce hyperproliferative lesions. More than 220 different HPV types have been characterized and classified into five different genera. While mucosal high-risk HPVs have a well-established causal role in anogenital carcinogenesis, the biology of cutaneous...
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abstract::The various reactions involved in the formation and actions of biological reactive intermediates of AFB1 are undoubtedly common to the wide variety of mycotoxins. The structural diversity of mycotoxins and their widespread occurrence in nature has made them a significant class of model environmental toxicants for mode...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4684-5134-4_56
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abstract::RNA virus quasispecies are subjected to processes of positive Darwinian selection, to a very active and continuous negative selection and to random genetic drift. The course of RNA virus evolution is often unpredictable, and recent results suggest that even highly conserved motifs, once regarded as essential for infec...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:10.1007/978-1-4615-5331-1_93
更新日期:1998-01-01 00:00:00
abstract::Systematic studies on the oxygenation status of solid tumors have shown that the development of hypoxic/anoxic tissue subvolumes is a pathophysiological trait in a wide range of human malignancies. As a result of this characteristic property, adenosine (ADO) accumulation (range: 50-100 μM) occurs caused by intra- and ...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
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abstract::Peroxisomopathies are rare diseases due to dysfunctions of the peroxisome in which this organelle is either absent or with impaired activities. These diseases, at the exception of type I hyperoxaluria and acatalasaemia, affect the central and peripheral nervous system. Due to the significant impact of peroxisomal abno...
journal_title:Advances in experimental medicine and biology
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更新日期:2020-01-01 00:00:00
abstract::A quadruple wavelength method to monitor the changes in concentration of oxygenated and deoxygenated hemoglobin and the redox state of cytochrome oxidase within a living tissue is presented. The expected advantages of this technique over the triple wavelength method are (i) that it can compensate for the light scatter...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4684-5643-1_8
更新日期:1989-01-01 00:00:00
abstract::Recently advances in cancer genomics revealed the unexpected high frequencies of epigenetic abnormalities in human acute myeloid leukemia (AML). Accumulating data suggest that these leukemia-associated epigenetic factors play critical roles in both normal hematopoietic stem cells (HSCs) and leukemia stem cells (LSCs)....
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更新日期:2019-01-01 00:00:00
abstract::circRNAs have emerged as one of the key regulators in many cellular mechanisms and pathogenesis of diseases. However, with the limited knowledge and current technologies for circRNA investigations, there are several challenges that need to be addressed for. These include challenges in understanding the regulation of c...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:10.1007/978-981-13-1426-1_28
更新日期:2018-01-01 00:00:00
abstract::The photoreceptor-specific tetraspanin glycoprotein RDS (retinal degeneration slow) is associated with many forms of inherited retinal disease. RDS shares features in common with other tetraspanin proteins, including the existence of a large intradiscal D2 loop containing several cysteines. While these cysteines are u...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4419-1399-9_5
更新日期:2010-01-01 00:00:00
abstract::Neisseria meningitidis lipooligosaccharides (LOSs) are classified into 12 immunotypes. Most LOSs are heterogeneous in having a few components by SDS-PAGE analysis that differ antigenically and chemically. We have utilized a monoclonal antibody that recognizes lacto-N-neotetraose (LNnT) and the lectin, Maackia amurensi...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:10.1007/978-1-4615-1267-7_35
更新日期:2001-01-01 00:00:00
abstract::During the past decade the mechanism of CTL-mediated killing has been resolved into 3 steps, and its cation requirements, and general nature have been well defined. However, biochemical understanding of the CTL-target interaction has made little progress. Recently, we have developed a monoclonal antibody (MAb) which b...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4684-8959-0_27
更新日期:1982-01-01 00:00:00
abstract::Savinase and Esperase (EC. 3.4.21.14) are secreted by the alkalophilic bacterium Bacillus lentus and are representatives of that subgroup of subtilisin enzymes with maximum stability in the range of pH 7 to 10 and high activity in the range of pH 8 to 12. The crystal structures of native Savinase and diisopropyl fluor...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4613-0319-0_7
更新日期:1996-01-01 00:00:00
abstract::This study was undertaken to further clarify the role of kallikrein-kinin and renin-angiotensin systems in the hypotensive mechanisms of the angiotensin-I converting enzyme inhibitor by using highly sensitive and specific radioimmunoassays in patients with essential hypertension. Captopril was administered for 14 days...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4615-9543-4_7
更新日期:1989-01-01 00:00:00
abstract::In patients with neurodegenerative disorders, namely Alzheimer's disease and Huntington's disease, we compared serum concentrations of tryptophan, kynurenine and the kynurenine per tryptophan ratio with concentrations of soluble immune activation markers. Significantly lower tryptophan concentrations were observed in ...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4615-4709-9_19
更新日期:1999-01-01 00:00:00
abstract::Expression of voltage-gated sodium channels (Nav) takes place in the airways and the role of Nav1.7 and Nav1.8 in the control of airway's defense reflexes has been confirmed. The activation of Nav channels is crucial for cough initiation and airway smooth muscle reactivity, but it is unknown whether these channels reg...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/5584_2016_244
更新日期:2016-01-01 00:00:00
abstract::In this article, we present an overview of simulation strategies in the context of subcellular domains where calcium-dependent signaling plays an important role. The presentation follows the spatial and temporal scales involved and represented by each algorithm. As an exemplary cell type, we will mainly cite work done...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:10.1007/978-94-007-2888-2_25
更新日期:2012-01-01 00:00:00
abstract::Congenital anomalies (CA) represent an important fraction of rare diseases, due to the critical role of non-genetic factors in their pathogenesis. CA are the main group of rare diseases in which primary prevention measures will have a beneficial impact. Indeed, since 2013 the European Union has endorsed a body of evid...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:10.1007/978-3-319-67144-4_18
更新日期:2017-01-01 00:00:00
abstract::Calcium (Ca2+) accumulation inside mitochondria represents a pleiotropic signal controlling a wide range of cellular functions, including key metabolic pathways and life/death decisions. This phenomenon has been first described in the 1960s, but the identity of the molecules controlling this process remained a mystery...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:10.1007/978-3-319-55330-6_2
更新日期:2017-01-01 00:00:00
abstract::Cornelia de Lange syndrome (CdLS) (OMIM # 122470, #300590 and #610759) is an autosomal dominant disorder that is classically characterized by typical facial features, growth and mental retardation, upper limb defects, hirsutism, gastrointestinal and other visceral system involvement. Heterozygous mutations in the cohe...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:
更新日期:2010-01-01 00:00:00
abstract::This is the first study to examine the potential effects of emissions from an air gun array on hearing of tropical reef fish using AEP thresholds measured in the field. Over 7 days, 51 Chromis viridis,47 Lutjanus kasmira, 20 Myripristis murdjan, and 10 Sargocentron spiniferum were tested. AEP thresholds were determine...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4419-7311-5_53
更新日期:2012-01-01 00:00:00
abstract::Biodegradable and biocompatible microspheres have been investigated for their usefulness as a vaccine delivery system for both parenteral and enteral immunization. Microspheres composed of poly(DL-lactide-co-glycolide) which contained a toxoid vaccine of Staphylococcal enterotoxin B were found to strongly potentiate t...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4757-2046-4_18
更新日期:1989-01-01 00:00:00
abstract::This study explores brain-computer interfacing, its possible use in serious or educational games and frameworks. Providing real-time feedback regarding cognitive states and behaviours can be a powerful tool for mental health education and games can offer unique and engaging environments for these neurofeedback experie...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-3-030-19385-0_7
更新日期:2019-01-01 00:00:00
abstract::This paper describes a comprehensive application with three features to diagnose common and rare diseases and to optimize health and vitality of the user with the help of broad databases and state-of-the-art technologies. The features comprise: 1. A digital blood analysis for optimizing the patient's metabolism and he...
journal_title:Advances in experimental medicine and biology
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更新日期:2020-01-01 00:00:00
abstract::In attempts to correlate metastatic potential with specific properties of tumor cells, homogeneous subpopulations, which are endowed with low or high metastatic potential, have been selected from Lewis lung carcinoma (3LL). In particular, since cell surface constituents are possibly involved in the metastatic process,...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-1-4899-5037-6_16
更新日期:1988-01-01 00:00:00
abstract::Experiments using live dissociated carotid body (CB) cells for patch clamping, [Ca(++)](i) or other measurements require positive identification of the cell being recorded. At present, cell morphology is usually employed, but several cell types within the carotid body evidence similar morphologic characteristics. Ther...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
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更新日期:2009-01-01 00:00:00
abstract::The term cardiovascular diseases (CVD) refers to disorders of heart and blood vessels, and include coronary heart disease, cerebrovascular disease, peripheral vascular disease, and heart failure, among others. Atherosclerosis is a common background of these diseases. It is not infrequent that some acute diseases, such...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
doi:10.1007/978-3-030-21735-8_5
更新日期:2019-01-01 00:00:00
abstract::The autoimmune retinopathies (AIRs) are a group of inflammatory-mediated retinopathies that present with unexplained visual loss (both central and peripheral), visual field defects, usually a ring scotoma, photoreceptor dysfunction as evident on electroretinography (ERG), and circulating autoantibodies against retinal...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:10.1007/978-3-319-95046-4_47
更新日期:2018-01-01 00:00:00