Abstract:
:Galanin is a neuropeptide that is widely distributed in the central and peripheral nervous systems. Some small cell lung carcinoma (SCLC) cell lines such as SBC-3A release only the high-molecular-mass form, with lower molecular mass forms being undetectable. To investigate the mechanism of processing of progalanin to active peptide, we studied galanin-LI in both the culture media of SBC-3A cells and in extracts from in vivo mouse SBC-3A tumors. SBC-3A cells were found to release high molecular mass galanin, but did not release active peptides. In contrast, tumor extract contained both high-molecular-mass galanin, and a cleaved lower-molecular-mass form of the peptide (8, 5 and 2 kDa). The lower-molecular-mass peptide was identified as galanin(1-20) by MALDI-TOF mass spectrometry. We then looked at MMP-2 and MMP-9 release from SBC-3A cells and tumor tissue treated with galanin and progalanin, as revealed by gelatin zymography. Galanin elicited pro-MMP-2 and pro-MMP-9 release from SBC-3A cells and tumor tissue; however, recombinant progalanin induced pro-MMP-2 and pro-MMP-9 release from tumor tissue only. This study has shown that the galanin-LI released from SCLC SBC-3A cells consisted of the high-molecular-mass peptide form, and was processed extracellularly to galanin(1-20). Furthermore, galanin was seen to induce pro-MMP-2 and pro-MMP-9 release from SBC-3A cells.
journal_name
Protein Pept Lettjournal_title
Protein and peptide lettersauthors
Yamamoto H,Iguchi K,Ohno S,Yokogawa T,Nishikawa K,Hoshino Mdoi
10.2174/092986611796378693subject
Has Abstractpub_date
2011-10-01 00:00:00pages
1058-64issue
10eissn
0929-8665issn
1875-5305pii
BSP/ PPL/ E pub/0341journal_volume
18pub_type
杂志文章abstract::The development of a stable L-BDH chimera was attempted by exchanging whole domains between two native structural analogs, L-BDH and meso-BDH, because the S-configuration specificity of L-BDH is valuable from the standpoint of its application but its activity is unstable, whereas meso-BDH is stable. The domain chimera...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986611795713970
更新日期:2011-08-01 00:00:00
abstract::An alternative method for expressing the recombinant proteins in Escherichia coli is proposed. Unlike the ordinary induction protocol where the cells in the early- to mid-log phase are induced for the protein production, this alternative protocol utilizes the cells in the stationary phase. By using a glutathione S-tra...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866033478861
更新日期:2003-08-01 00:00:00
abstract::To investigate the processing of transforming growth factor beta1 (TGFbeta1) pro-protein by furin protease we expressed a GST-pro-TGFbeta1 fusion protein in bacteria. Analysis of the furin digestion pattern revealed the liberation of 12.5 kDa TGFbeta1 monomers. There was no evidence for cleavage of an alternative furi...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986610790963609
更新日期:2010-04-01 00:00:00
abstract::Comparison between the BAD complexes indicated that BAD all docks a hydrophobic surface of PKAc regardless of its phosphorylation. PKAc may prevent Bcl-xL from rebinding to BAD by phosphorylating human BAD at Ser118; whereas human BAD is phosphorylated on Ser75 in a BAD-Bcl-xL complex, resulting in the dissociation of...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986610790226003
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND:Paraoxonase (PON; arilesterase, [EC 3.1.8.1]) is an enzyme from the group arilesterases (ARE). This enzyme is capable of hydrolyzing paraoxone which is the active metabolite of parathion, an organic phosphorus insecticide. PON activity was found to be low in individuals prone to development of atherosclerosi...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866526666190124144622
更新日期:2019-01-01 00:00:00
abstract::Antimicrobial peptides (AMPs) are short, cationic, membrane-interacting proteins that exhibit broad-spectrum antimicrobial activity, and are hence of significant biomedical interest. They exert their activity by selectively binding to and lysing target cell membranes, but the precise molecular details of their mechani...
journal_title:Protein and peptide letters
pub_type: 杂志文章,评审
doi:10.2174/0929866511009011313
更新日期:2010-11-01 00:00:00
abstract::The immunoglobulin fold (Ig-fold) is a widespread structural motif that is detected in a variety of proteins involved in diversified biological processes. The Ig-fold contains 70-110 residues that are assembled in a characteristic sandwich-like structure formed by two facing β-sheets each made of antiparallel β-strand...
journal_title:Protein and peptide letters
pub_type: 杂志文章,评审
doi:10.2174/092986612802762732
更新日期:2012-10-01 00:00:00
abstract::The renin-angiotensin system (RAS) has two different axes, the classical one with the effector peptide angiotensin II and the new one with the effector peptide angiotensin (1-7). Both peptides have been shown to be involved in the pathogenesis of diabetes mellitus and its consequences, nephropathy, retinopathy and car...
journal_title:Protein and peptide letters
pub_type: 杂志文章,评审
doi:10.2174/0929866524666170728144357
更新日期:2017-11-17 00:00:00
abstract::Interaction between S100P and its target protein is an essential step in several cellular functions. The amphipathic mellitin peptide binds tightly to S100P protein in the presence of calcium cation. Since little is known about the recognition sequence, mellitin interaction form a model for S100P. Interaction between ...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986606775338380
更新日期:2006-01-01 00:00:00
abstract::A computer-aided docking study was carried out to quickly clarify the binding structure of the ligand-receptor complex between bisphenol A (BPA), a well-known endocrine disruptor, and estrogen-related receptor gamma (ERRgamma). The resulting complex indicated that BPA binds to the ligand-binding pocket of ERRgamma wit...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986608783744261
更新日期:2008-01-01 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::Bucain, a potent neurotoxin isolated from the venom of the Malayan krait (Bungarus candidus), induces paralysis and death. Its crystal structure has been determined at 2.10 A resolution and based on the molecular topology and hydrophobicity profile is structurally classified as a three-fingered alpha-neurotoxin posses...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986609789839304
更新日期:2009-01-01 00:00:00
abstract::Apelin, an endogenous ligand of the G-protein-coupled receptor APJ, is a novel myokine and may play a key role in regulating energy metabolism. The purpose of the present study was to investigate the effects of hypoxic exposure, exercise, and hypoxic exercise training on the expression of apelin and APJ in skeletal mu...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866524666161111111726
更新日期:2017-01-01 00:00:00
abstract::The small heat shock protein SsHSP14.1 from the hyper-thermophilic archeaon, Sulfolobus solfataricus (S. solfataricus) was able to protect proteins from thermal aggregation and prevent enzymes from heat induced inactivation. According to the 3D (dimensional) structural model of SsHSP14.1 developed by us before, the re...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986611794578369
更新日期:2011-03-01 00:00:00
abstract::There is accumulating evidence that proteinuria is not merely a biomarker for the progression of chronic kidney disease (CKD), but also a mediator of this devastating disorder. Indeed, albumin, one of the major components found in proteinuria, causes proinflammatory and profibrotic changes in cultured proximal tubular...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986610789909430
更新日期:2010-01-01 00:00:00
abstract::Nicotinamide adenine dinucleotide (NAD) plays an important role in cellular metabolism and acts as hydrideaccepting and hydride-donating coenzymes in energy production. Identification of NAD protein interacting sites can significantly aid in understanding the NAD dependent metabolism and pathways, and it could further...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986612800191017
更新日期:2012-05-01 00:00:00
abstract::Quantum mechanical fragment molecular orbital calculations have been performed for receptor binding of the hemagglutinin protein of the recently pandemic influenza 2009 H1N1, A/swine/Iowa/1930, and A/Puerto Rico/8/1934 viruses to α2-6 linked sialyloligosaccharides, as analogs of human receptors. The strongest receptor...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986611794927893
更新日期:2011-05-01 00:00:00
abstract:BACKGROUND:Bursa of Fabricius plays the vital functions on B cell development and antibody production in poultry. The bursal-derived peptide plays the essential roles on avian immature B cell development. OBJECTIVES:Here we explored the functions of the recently reported bursal nonapeptide (BP9) on the antibody produc...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866526666190730101455
更新日期:2019-01-01 00:00:00
abstract::After consideration of the tertiary structure of the pY+3 binding pocket in SH2 domains, isoleucine of Ac-pYEEIE was replaced with various unnatural aliphatic amino acids and the binding affinities for Lck, Src, and Fyn SH2 domains were measured. We determined the characteristics of the amino acid at the pY+3 position...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866043406337
更新日期:2004-12-01 00:00:00
abstract::Bacterial ADP-ribosyltransferases (BADPRTs) are extensively contributed to determine the strain-specific virulence state and pathogenesis in human hosts. Understanding molecular evolution and functional diversity of the BADPRTs is an important standpoint to describe the fundamental behind in the vaccine designing for ...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866511320090012
更新日期:2013-09-01 00:00:00
abstract::A thermostable uricase identified in Bacillus firmus DWD-33, which was isolated for the first time from soil, with an apparent molecular weight of 33.5 kDa was stable against oxidants and SDS. The highest expression yields were obtained in medium containing 0.8% maltose and 1.2% soybean powder as carbon and nitrogen s...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986652205150509213536
更新日期:2015-01-01 00:00:00
abstract::Polymyositis is an inflammatory myopathy characterized by muscle invasion of T-cells penetrating the basal lamina and displacing the plasma membrane of normal muscle fibers. In order to understand the different adhesive mechanisms at the T-cell surface, Schubert randomly selected 19 proteins expressed at the T-cell su...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986612801619534
更新日期:2012-08-01 00:00:00
abstract::Aspergillus sp. phytase contains five disulfide bonds. In order to elucidate their role, the reactivation and refolding of phytase in the absence and presence of dithiothreitol (DTT) was investigated. The results indicated that the disulfide bonds play an important role in the catalytic activity and conformational sta...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866054395752
更新日期:2005-08-01 00:00:00
abstract::Classification of newly determined protein structures is important in understanding their function and mechanism of action. Currently available methods employ a global structure alignment strategy and are computationally expensive. We propose a two-step methodology with a quick screen to significantly reduce the numbe...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986607781483877
更新日期:2007-01-01 00:00:00
abstract::In the development of cell-hybrid biomaterials, the functional activity of cells depends on the selective binding of cells to artificial ligands on the biomaterials. The extracellular matrix (ECM) is the most important ligand for cell activity. ECM is known to contain collagen, one of whose constituents is gelatin. Al...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866023408436
更新日期:2002-12-01 00:00:00
abstract::The description of protein backbone was recently improved with a group of structural fragments called Structural Alphabets instead of the regular three states (Helix, Sheet and Coil) secondary structure description. Protein Blocks is one of the Structural Alphabets used to describe each and every region of protein bac...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/0929866511320030003
更新日期:2013-03-01 00:00:00
abstract::The studies presented here explore antimicrobial peptide preferential binding behavior for a target pathogen, Escherichia coli O157:H7. A modified immunoassay and surface plasmon resonance were employed to evaluate immobilized peptide binding of whole bacterial cells. The knowledge gained may guide the rational design...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986608786071049
更新日期:2008-01-01 00:00:00
abstract::The self-assembly of short peptide building blocks into well-ordered nanostructures is a key direction in bionanotechnology. The formation of β -sheet organizations by short peptides is well explored, leading to the development of a wide range of functional assemblies. Likewise, many natural proteinaceous materials, s...
journal_title:Protein and peptide letters
pub_type: 杂志文章,评审
doi:10.2174/0929866525666180917163142
更新日期:2019-01-01 00:00:00
abstract::Seminal plasma proteins contributed by secretions of accessory glands plays a copious role in fertilization. Their role is overlooked for decades and even now, as Artificial Reproduction Techniques (ART) excludes the plasma components in the procedures. Recent evidences suggest the importance of these proteins startin...
journal_title:Protein and peptide letters
pub_type: 杂志文章,评审
doi:10.2174/0929866526666190208112152
更新日期:2019-01-01 00:00:00
abstract::Here, we show for the first time that non-fibrillar and spherical aggregates produced from PrP-(23-98) in the presence of NADPH plus copper ions are toxic to cultured cells and induce apoptotic signals. It is also confirmed that endogenous cellular PrP isoform is not required for toxicity to occur. ...
journal_title:Protein and peptide letters
pub_type: 杂志文章
doi:10.2174/092986609787049475
更新日期:2009-01-01 00:00:00