Abstract:
:Heat shock proteins (HSPs) consist of a large group of proteins with negligible expressions under physiological conditions. Their expressions are highly induced under stress conditions and they are ubiquitously expressed in various tissues and organs. HSPs possess chaperone functions, thus facilitating the correct folding of proteins or peptides. In hepatocellular carcinoma (HCC), high expressions of HSPs are demonstrated in liver cancer tissues and are correlated clinically with the severity of tumors and poor outcomes of HCC patients. This property enables them to be used as diagnostic markers for the onset of HCC. Since their expressions are highly expressed in liver cancer conditions, inhibitors or antisense oligonucleotides of HSPs are postulated to serve as potential therapeutics in treating this liver malignancy. In this review, we will first introduce the HSP family and discuss the major signaling pathways involved for the activities of HSPs. In addition, the clinical applications of HSPs in liver cancer in the aspects of diagnosis and therapy will be summarized and discussed.
journal_name
Protein Pept Lettjournal_title
Protein and peptide lettersauthors
Lu WJ,Lee NP,Fatima S,Luk JMdoi
10.2174/092986609788167752subject
Has Abstractpub_date
2009-01-01 00:00:00pages
508-16issue
5eissn
0929-8665issn
1875-5305journal_volume
16pub_type
杂志文章,评审abstract::We report a new prohormone convertase gene of insect origin, Trichoplusia ni furin, which was cloned from BTI-Tn-5B-4 (Tn5) insect cells. We constructed a truncated mutant that lacked Cys-rich repeated segments. Using baculovirus expression system and standard enzymatic assay, we obtained recombinant Tn furin and eval...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986606775101553
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND:Peptide: N-glycanase is a deglycosylation enzyme releasing N-glycan from glycoproteins. Although glycan specificity analysis of this enzyme has been reported, recognition requirements for the peptide sequence have not been precisely elucidated. OBJECTIVE:In this study, we carried out peptide specificity ana...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866524666170818160159
更新日期:2017-01-01 00:00:00
abstract::The stability of Merrifield linker in Fmoc deprotection process was quantitatively investigated by establishing working curve of two major decomposition components from two resin bound dipeptide models. By sampling reaction solution and analyzing with RP-HPLC, decomposition rate was determined. The results indicated t...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986613804725343
更新日期:2013-02-01 00:00:00
abstract::We have synthesised nine analogues of the antibacterial peptide anoplin with a peptoid residue at position 5 (H-GLLKXIKTLL-NH(2)). The most active compounds showed MIC-values of 12.5 and 25 microM against E.coli and S.aureus. These MIC-values are comparable with anoplin which showed 23 microM and 11 microM against E. ...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986609789055421
更新日期:2009-01-01 00:00:00
abstract::Human beta-defensin-2 (hBD2) is A small cationic peptide with A broad range of antimicrobial activity. An E. coli cell-free system was employed to express the hBD2 fusion protein by using the hBD2 gene with 14 rare codons. The results showed that the expression level of trxA-hBD2 fusion protein was 0.35 mg/ml, which i...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986606775101724
更新日期:2006-01-01 00:00:00
abstract::After several studies on prediction of mutation, we examine the effect of three sampling strategies, the sampling based on years, the sampling based on number of mutations, and the sampling based on the unpredictable portion of amino-acid pairs, on the prediction performance in H5N1 hemagglutinins. The results show th...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986608785133735
更新日期:2008-01-01 00:00:00
abstract::Protein palmitoylation is an important and common post-translational lipid modification of proteins and plays a critical role in various cellular processes. Identification of Palmitoylation sites is fundamental to decipher the mechanisms of these biological processes. However, experimental determination of palmitoylat...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986611794475084
更新日期:2011-02-01 00:00:00
abstract::Human endophilin 1 (hEndo1) is a multifunctional protein that was found to bind a wide spectrum of prolinerich endocytic proteins through its Src homology 3 (SH3) domain. In order to elucidate the unknown biological functions of hEndo1, it is essential to find out the cytoplasmic components that hEndo1 recognizes and ...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986612802762606
更新日期:2012-10-01 00:00:00
abstract::Cyclophilin A (CyPA) is a cytosolic receptor of immunosuppressive drug cyclosporin A (CsA) which possesses peptidyl-prodyl cis/trans isomerase (PPIase) activity. The recombinant human CyPA (rhCyPA) gene has been expressed in E. coli M15. Purification was performed using salting-out, as well as Sephacryl S-100 and DEAE...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986611797642670
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:Nε-acetyl L-α lysine is an unusual acetylated di-amino acid synthesized and accumulated by certain halophiles under osmotic stress. Osmolytes are generally known to protect proteins and other cellular components under various stress conditions. OBJECTIVE:The structural and functional stability imparted by N...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866526666191105130041
更新日期:2020-01-01 00:00:00
abstract::The study of rat proteins is an indispensable task in experimental medicine and drug development. The function of a rat protein is closely related to its subcellular location. Based on the above concept, we construct the benchmark rat proteins dataset and develop a combined approach for predicting the subcellular loca...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986611795222768
更新日期:2011-06-01 00:00:00
abstract::Influenza viruses cause a significant level of morbidity and mortality in the population every year. Their resistance to current anti-influenza drugs increases the difficulty of flu treatment. Thus, development of new anti-influenza drugs is necessary in regards of prevent the tragedy of influenza pandemic. The Polyme...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986611796378675
更新日期:2011-10-01 00:00:00
abstract:BACKGROUND:Prmt5 plays major role in regulation of gene expression, RNA processing, cell growth and differentiation, signal transduction, germ cell development, etc., in mammals. Prmt5 is also related to cancer. Knowing the proteins interacting with Prmt5 is important to understand Prmt5's function in cells. Although t...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866527666200505213431
更新日期:2020-01-01 00:00:00
abstract::We investigated the in vitro antibiotic activity of the 19-amino acid antimicrobial peptide HP (2-20), derived from the N-terminus of Helicobacter pylori Ribosomal Protein L1 (RPL1), against antibiotic susceptible and resistant pathogens from a patient with gallstones. HP (2-20) was active against antibiotic-susceptib...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986606774502018
更新日期:2006-01-01 00:00:00
abstract::Identifying protein complexes in protein-protein interaction (PPI) networks is a fundamental problem in computational biology. High-throughput experimental techniques have generated large, experimentally detected PPI datasets. These interactions represent a rich source of data that can be used to detect protein comple...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866521666140320111720
更新日期:2014-07-01 00:00:00
abstract::The prediction of protein function is a difficult and important problem in computational biology. In this study, an efficient method is presented to predict protein function with sequence composition information. Four kinds of basic building blocks of protein sequences are investigated, including N-grams, binary profi...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986610791190336
更新日期:2010-06-01 00:00:00
abstract:BACKGROUND:Cryptochrome is a flavin-binding blue-light photoreceptor that functions in growth and development in plants, the circadian clock in animals and navigation in birds. However, a lack of purified cryptochrome has hindered studies of the structure and function of this protein. In this study, we obtained a subst...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866525666181004112308
更新日期:2018-01-01 00:00:00
abstract::Human histatins are histidine-rich, low molecular weight salivary proteins that contribute to the immune system of the oral cavity. In this work, nucleotide sequences of the HIS1 (coding for histatin 1) and HIS2 (coding for histatin 3) genes, homologous to the human ones, have been sequenced and analysed in five prima...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986610791306715
更新日期:2010-07-01 00:00:00
abstract::Antimicrobial peptides (AMPs) constitute an important alternative in the search for new treatments against pathogens. We analyzed the sequence variability in cytokine and chemokine proteins to investigate whether these molecules contain a sequence useful in the development of new AMPs. Cluster analysis allowed the ide...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866511320050001
更新日期:2013-05-01 00:00:00
abstract::We have synthesised the CXC chemokine receptor 4 (29-39) peptide, CXCR4[29-39]. This peptide is located in the N-terminal region of the receptor and is likely to be involved in the docking step of the receptor interaction with its natural ligand stromal cell-derived factor-1 chemokine, SDF-1. Preliminary experiments, ...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866033479022
更新日期:2003-04-01 00:00:00
abstract:BACKGROUND:Malignant tumor is still one of the important diseases worldwide, cytotoxic CD8+ T lymphocytes (CTLs) play an important role in killing tumor cells. OBJECTIVE:To enhance the immune response of our previously identified HLA-A2-restricted CTL epitopes, we designed a multiepitope YL66. METHOD:The fusion prote...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866524666170419152700
更新日期:2017-01-01 00:00:00
abstract::PD-L1 is a highly glycosylated type 1 ribosome inactivating protein, from Phytolacca dioica leaves, with the peculiarity to act also as a DNase. PD-L1 has been successfully crystallized using vapour diffusion and seeding techniques. Crystals belong to the monoclinic C2 space group, with unit cell dimensions a=161.01, ...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986607780363899
更新日期:2007-01-01 00:00:00
abstract::A significant association between increased level of blood homocysteine (hyperhomocysteinimia) and various eye pathological disorders including cataract has been reported. This metabolic byproduct is converted into a highly reactive cyclic thioester compound, homocysteine thiolactone (HCTL), which can potentially reac...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866523666151106123944
更新日期:2016-01-01 00:00:00
abstract::In this paper, a 3D map of protein fold space was produced using Dali structure alignment and nonmetric multidimensional scaling. The fold space comprises four radial clusters, which correspond to the four classes of SCOP. The overall structure of the protein fold space is largely determined by three factors: secondar...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866054395257
更新日期:2005-07-01 00:00:00
abstract::Heparin is naturally occurring polysaccharides which interacts with seminal plasma proteins and regulate multiple steps in fertilization process. Qualitative and quantitative information regarding the affinity for heparin-seminal plasma proteins interactions is not generally well documented and there are no reports of...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986612801619525
更新日期:2012-08-01 00:00:00
abstract::We present two efficient network propagation algorithms that operate on a binary tree, i.e., a sparse-edged substitute of an entire similarity network. TreeProp-N is based on passing increments between nodes while TreeProp-E employs propagation to the edges of the tree. Both algorithms improve protein classification e...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986608784567492
更新日期:2008-01-01 00:00:00
abstract::We report the stepwise transformation of a linear peptide epitope recognized by the anti-transforming growth factor alpha monoclonal antibody Tab2 into peptomers and finally into peptoid analogs. The key experiment in this study is the substitution analysis in which each position of the peptide is exchanged by a set o...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986606777841299
更新日期:2006-01-01 00:00:00
abstract::Porins are integral membrane proteins found in the outer membrane of bacteria, mitochondria and chloroplasts. Herein, we have reviewed sequence and structural understanding about bacterial porins. The first porin structure from Rhodobacter capsulatus at 1.8 Å resolution in 1991 till the recent structural advancement, ...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866521666140827110755
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:Protealysin, a zinc metalloprotease of Serratia proteamaculans, is the prototype of a new group within the peptidase family M4. Protealysin-like proteases (PLPs) are widely spread in bacteria but are also found in fungi and archaea. The biological functions of PLPs have not been well studied, but published d...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866526666181212114907
更新日期:2019-01-01 00:00:00
abstract::Apomyoglobin (apoMb) folds through at least two partially folded forms that are detected both as transient intermediates during folding/unfolding kinetics or as stable intermediates at equilibrium. Here, I summarize the results of recent kinetic studies, which combined with detailed characterizations of equilibrium fo...
journal_title:Protein and peptide letters
pub_type: 杂志文章,评审
doi:10.2174/0929866053587174
更新日期:2005-04-01 00:00:00