Abstract：
:The two types of proteasomes with apparent sedimentation coefficients of 20S and 26S consist of a number of heterogeneous polypeptides and are unusually large protein complexes of approximately 750 kDa and 2000 kDa, respectively. The 26S proteasome is a cylindrical caterpillar-shaped complex with a symmetrical assembly of a four-layered central 20S proteasome and two terminal 22S regulators each with a V-like structure. The central core and the terminal structures are formed by multiple polypeptides with molecular masses of 21-31 kDa and 28-112 kDa, respectively. We have been studying their detailed structures by protein-chemical and molecular biological techniques. In this review, we summarize the structural features of eukaryotic 20S and 26S proteasomes. We also discuss the possible function(s) of the terminal multi-protein regulator complex based on current information.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Tanaka K,Tamura T,Tanahashi N,Tsurumi Cdoi
10.1007/978-1-4613-0335-0_23subject
Has Abstractpub_date
1996-01-01 00:00:00pages
187-95eissn
0065-2598issn
2214-8019journal_volume
389pub_type
杂志文章,评审abstract：:Prostate cancer (PCa) is the most common type of cancer in men with high morbidity and mortality. However, the current treatment with drugs often leads to chemotherapy resistance. It is known that the multi-disciplines research on molecular imaging is very helpful for early diagnosing, staging, restaging and precise t...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-99286-0_6
更新日期：2018-01-01 00:00:00
abstract：:Although cell fusion is an omnipresent process in life, to date considerably less is still known about the mechanisms and the molecules being involved in this biological phenomenon in higher organisms. In Cell Fusion in Health and Disease Volume 1 international leading experts will present up-to-date overviews about t...
journal_title：Advances in experimental medicine and biology
pub_type：
doi：10.1007/978-94-007-0763-4_1
更新日期：2011-01-01 00:00:00
abstract：:The activation of 17beta-estradiol (E2) to 2-hydroxyestradiol (2-HO-E2), the more genotoxic 4-hydroxyestradiol (4-HO-E2), and the oxidation to the respective quinones constitutes a risk factor in hormonal carcinogenesis. 2-HO-E2 is formed by cytochrome P450 CYP1A1, and 4-HO-E2 is formed by CYP1B1. Both are detoxified ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-0-387-69080-3_65
更新日期：2008-01-01 00:00:00
abstract：:In summary, it can be said that in spite of possible limitations, this technique provides previously unattainable data on capillary flow pattern in the myocardium. Qualitative and quantitative results indicate that the following anatomical and physiological concepts should be incorporated in any further modelling of o...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-9510-6_53
更新日期：1988-01-01 00:00:00
abstract：:In healthy normotensive pregnancy, a complex functional network develops between the cardiovascular system, the volume and composition of the extracellular fluid and the renin-angiotensin system (RAS). Cardiac output and heart rate increase, but blood pressure is reduced. The kidneys increase in size and both the glom...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4757-0154-8_59
更新日期：1986-01-01 00:00:00
abstract：:The subunit structure of the B-cell antigen receptor (BCR) and its associated compartmentalization of function confer enormous flexibility for generating signals and directing these toward specific and divergent cell fate decisions. Like all the multichain immune recognition receptors discussed in this volume, assembl...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-0-387-09789-3_2
更新日期：2008-01-01 00:00:00
abstract：:The benefits of a mouse model are efficiency and availability of transgenics/ knockouts. Quantitation of cerebral blood in small animals is difficult because the cannulation procedure may introduce errors. The [14C]-iodoantipyrine autoradiography (IAP) method requires both the tissue concentration and the time course ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/0-387-26206-7_14
更新日期：2005-01-01 00:00:00
abstract：:A multilayered epithelium to fulfil its function must be replaced throughout the lifespan. This is possible due to the presence of multipotent, self-renewing epidermal stem cells that give rise to differentiated cell lineages: keratinocytes, hairs, as well as sebocytes. Till now the molecular mechanisms responsible fo...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-030-31206-0_12
更新日期：2019-01-01 00:00:00
abstract：:Carcinogens occur naturally in the foods we eat, including a number of HCAs that have been identified in foods (beef, pork, poultry and fish) as a result of cooking. These compounds are formed during the normal cooking process by the reaction of creatine with various amino acids. The HCAs have been identified as a res...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-1957-7_20
更新日期：1995-01-01 00:00:00
abstract：:Acidification of endocytic compartments occurs within 2-3 minutes following internalization. In CHO cells, three kinetically and morphologically distinct endocytic or recycling compartments can be identified. Measurements of the pH in these compartments show that the acidity of the compartments is regulated independen...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4684-5442-0_16
更新日期：1987-01-01 00:00:00
abstract：:The Adair four-step kinetic model for the reactions of haemoglobin and oxygen recognizes five haemoglobin species, corresponding to deoxyhaemoglobin and one species for each level of oxygenation of the four haem groups. Thus, an oxygen transport problem involves a system of five simultaneous non-linear partial differe...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-7433-6_22
更新日期：1987-01-01 00:00:00
abstract：:An allosteric mechanism refers to the biological regulation process wherein macromolecules propagate the effect of ligand binding at one site to a spatially distant orthosteric locus, thus affecting activity. The theory has remained a trending topic in biology research for over 50 years, since the understanding of all...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-13-8719-7_4
更新日期：2019-01-01 00:00:00
abstract：:Using the model of isolated myocytes, we have investigated under current- and/or voltage-clamp conditions: (i) the time-course of H2O2-induced changes in the action potentials and the contractility. (ii) the effect of pharmacological tools such as ryanodine, TTX and nifedipine on H2O2-induced changes; (iii) the effect...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-3362-7_28
更新日期：1992-01-01 00:00:00
abstract：:Drug resistance often results in failure of anticancer chemotherapy in leukemias. A large number of studies have been published on the effect of P-glycoprotein (Pgp) expression on prognosis in AML. However, a consensus has been difficult to reach, due to the variable results obtained by different laboratories. Pgp exp...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-4811-9_7
更新日期：1999-01-01 00:00:00
abstract：:Leukocyte migration is essential for exerting self-defense mechanisms. During the extravasation process, leukocytes transmigrate through the endothelial lining and the subendothelial basement membrane. Accumulating evidence supports the involvement of heparanase in this process. Altered cellular distribution resulting...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-030-34521-1_16
更新日期：2020-01-01 00:00:00
abstract：:Exosomes are 60 to 90 nm membrane vesicles originating from late endosomes and secreted from most hematopoietic and epithelial cells in vitro. B cell derived-exosome antigenicity was first reported in 1996 in MHC class II restricted CD4+ T lymphocytes. In 1998, we reported that dendritic cell derived-exosomes are immu...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-0081-0_17
更新日期：2003-01-01 00:00:00
abstract：:The effect of caloric intake on tumor growth has been recognized for over 70 years. Inhibition of tumor growth depends primarily on the extent of caloric restriction, but tumor type, animal strain, and dietary composition all exert some influence. Caloric restriction is most effective when maintained during both initi...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4613-1835-4_7
更新日期：1986-01-01 00:00:00
abstract：:Peripheral blood lymphocytes of 29 c-ANCA positive WG patients fulfilling the ACR classification criteria were examined for the expression of various leukocyte surface molecules by dual marker cytofluorometry (FACStar, Becton Dickinson). Activation markers such as CD25, HLA-DR, CD29 and adhesion molecules (ICAM-1 and ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4757-9182-2_69
更新日期：1993-01-01 00:00:00
abstract：:Relative to the role of viruses in the pathogenesis of atherosclerosis a number of questions remain to be answered. Being ubiquitous, are the herpesvirus infections the norm or a diseased state in humans and animals? In all cases studied, including MDV induced atherosclerosis, direct isolation of viruses from arterial...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-1957-7_9
更新日期：1995-01-01 00:00:00
abstract：:Mast cells play a major role in allergy and anaphylaxis, as well as a protective role in immunity against bacteria and venoms (innate immunity) and T-cell activation (acquired immunity).1,2 It was long thought that two steps are essential to mast cell activation. The first step (sensitization) occurs when antigen-spec...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4419-9533-9_3
更新日期：2011-01-01 00:00:00
abstract：:The effects of a single nutrient deficiency on immune function is now most extensively characterized using the dietary zinc deficient murine model. Deficiencies in zinc have rapid adverse effects on host defenses of humans and rodents. This impaired defense seems to be, in part, the result of a reduction in number of ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4613-0553-8_10
更新日期：1990-01-01 00:00:00
abstract：:Protein-protein associations represent the building blocks of biological systems. The classification of different types of protein association is fundamental to an understanding of the interactions they exhibit. A protein association can be classified as homo- (identical components) or hetero- (non-identical component...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4614-3229-6_3
更新日期：2012-01-01 00:00:00
abstract：:Two-component systems (TCSs) are well conserved among E. coli strains, including pathogenic E. coli and also closely related Shigella spp. Although 25% of the genome of pathogenic E. coli is strain-specific, only small number of strain-specific TCSs is found. Regulation of virulence genes in response to environmental ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-0-387-78885-2_13
更新日期：2008-01-01 00:00:00
abstract：:The innate immune system senses pathogens largely through signals initiated by a collection of phylogenetically related proteins known as "Toll-like receptors" (TLRs), of which ten representatives are encoded in the human genome. The sensing role of the TLRs first came to light when one member of this family, TLR4, wa...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/0-387-24180-9_4
更新日期：2005-01-01 00:00:00
abstract：:The Siberian hamster has been a useful model for studies of mammalian photoperiodism for a number of reasons: 1) Siberian hamsters are hardy animals that are easily maintained and bred in the laboratory. 2) The species exhibits a large number of seasonal, photoperiod-driven, pineal-dependent responses. Thus, the Siber...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/0-306-46814-x_17
更新日期：1999-01-01 00:00:00
abstract：:Redox signaling plays a critical role in the pathophysiology of cardiovascular diseases. The pentose phosphate pathway is a major source of NADPH redox in the cell. The activities of glucose-6-phosphate dehydrogenase (the rate-limiting enzyme in the pentose shunt) and glucose flux through the shunt pathway is increase...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-319-63245-2_4
更新日期：2017-01-01 00:00:00
abstract：:Proteoglycans consist of a protein core to which at least one glycosaminoglycan chain is attached. They play important roles in the physiology and biomechanical function of tendons, ligaments and cardiovascular system through their involvement in regulation of assembly and maintenance of extracellular matrix, and as t...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-94-007-7893-1_4
更新日期：2014-01-01 00:00:00
abstract：:Circular RNAs (circRNAs) are widely present and participate in a variety of biological regulatory activities as a novel type of endogenous noncoding RNA molecule. With advances in RNA structure and function analysis, it was found that circRNAs are present in a myriad of life processes and longevity in model organisms ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-13-1117-8_2
更新日期：2018-01-01 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：:Animal research in psychiatry suffers from a poor translational value. It is the same for all other disciplines. Our purpose in this chapter is therefore to highlight all the parameters that can lead to a non-reproducibility of interlaboratory experiments as well as intralaboratory. This is to point out the experiment...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-981-32-9721-0_14
更新日期：2019-01-01 00:00:00
