Abstract:
:The activation of progelatinase A to gelatinase A requires cleavage of an asparaginyl bond to form the N-terminus of the mature enzyme. We have asked whether the activation can be mediated by legumain, the recently discovered lysosomal cysteine proteinase that is specific for hydrolysis of asparaginyl bonds. Addition of purified legumain to the concentrated conditioned medium from HT1080 cell culture that contained both progelatinases A and B caused the conversion of the 72 kDa progelatinase A to the 62 kDa form. The progelatinase B in the medium was unaffected. Incubation of recombinant progelatinase A with legumain resulted in an almost instantaneous activation as judged by the fluorometric assay with a specific gelatinase A substrate, Mca-Pro-Leu-Gly-Leu-Dpa-Ala-Arg-NH2. Legumain also activated progelatinase A when it was in complex with TIMP-2. Zymographic analysis and N-terminal sequencing revealed that legumain cleaved the 72 kDa progelatinase A at the bonds between Asn109-Tyr110 or Asn111-Phe112 to produce the 62 kDa mature enzyme, and that further cleavage at Asn430 also occurred to generate a 36 kDa active form. More 62 kDa gelatinase A was detected in cultures of C13 cells that over-expressed legumain than in those of the control HEK293 cells. We conclude that legumain is clearly capable of processing progelatinase A to the active enzyme in vitro and in cultured cells.
journal_name
Biol Chemjournal_title
Biological chemistryauthors
Chen JM,Fortunato M,Stevens RA,Barrett AJdoi
10.1515/BC.2001.093keywords:
subject
Has Abstractpub_date
2001-05-01 00:00:00pages
777-83issue
5eissn
1431-6730issn
1437-4315journal_volume
382pub_type
杂志文章abstract::We have studied ribonuclease T1 (EC 3.1-27.3)-catalysed synthesis of guanylyl-(3'-->5')cytidine in frozen aqueous reaction mixtures at -10 degrees C and in solution at 0 degree C in order to investigate whether ribonuclease-catalysed synthetic reactions can take advantage of the yield-increasing effect of freezing as ...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/bchm.1997.378.2.115
更新日期:1997-02-01 00:00:00
abstract::Maintenance of cellular redox control is pivotal for normal cellular functions and cell fate decisions including cell death. Among the key cellular redox systems in mammals, the glutathione peroxidase (GPX) family of proteins is the largest conferring multifaceted functions and affecting virtually all cellular process...
journal_title:Biological chemistry
pub_type: 杂志文章,评审
doi:10.1515/hsz-2020-0286
更新日期:2020-10-22 00:00:00
abstract::Fibroblast growth factor (FGF) receptor substrate 2 (FRS2) is a membrane-anchored docking protein that has been shown to play an important role in linking FGF, nerve growth factor (NGF) and glial cell-derived neurotrophic factor (GDNF) receptors with the Ras/mitogen-activated protein (MAP) kinase signaling cascade. He...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2003.134
更新日期:2003-08-01 00:00:00
abstract::Mammalian apolipoproteinB (apoB) RNA editing is a site-specific deamination reaction that mediates the C to U conversion responsible for apoB48 production in the mammalian small intestine. This process is not detected in chicken apoB RNA. Mammalian apoB RNA editing is mediated by a multicomponent enzyme complex that i...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/bchm.1998.379.8-9.1075
更新日期:1998-08-01 00:00:00
abstract::Recent reports presented contradictory results regarding the catabolism of mature atrial (ANP) and brain (BNP) natriuretic peptides in circulation. Especially the role of neutral endopeptidase (NEP) in BNP degradation was conversely discussed. Our present in vitro-studies characterize the NEP-dependent metabolism of A...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2004.036
更新日期:2004-02-01 00:00:00
abstract::Meprins are zinc-endopeptidases of the astacin family, which are expressed as membrane-bound or secreted forms in renal and intestinal brush-border membranes of mouse, rat and man. There are two types of meprin subunits, alpha and beta, which form disulfide-bonded homo- and heterodimers; further oligomerization is med...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2003.092
更新日期:2003-05-01 00:00:00
abstract::The enzyme L-asparaginase is a crucial component in the treatment of acute lymphoblastic leukemia (ALL). As all asparaginases in clinical use are derived from microorganisms, immunological reactions are the most important adverse events associated with asparaginase treatment. Two different methods, phage display and t...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2005.063
更新日期:2005-06-01 00:00:00
abstract::The TNF family molecule RANKL and its receptor RANK are key regulators of bone remodeling, lymph node formation, and mammary gland development during pregnancy. RANKL and RANK are also expressed in the central nervous systems (CNS). However, the functional relevance of RANKL/RANK in the brain was entirely unknown. Rec...
journal_title:Biological chemistry
pub_type: 杂志文章,评审
doi:10.1515/BC.2010.149
更新日期:2010-12-01 00:00:00
abstract::The lysosomal cysteine proteinase cathepsin B has been implicated in the progression of various human tumors including ovarian cancer. Included in this study were 63 patients with epithelial ovarian carcinoma. Follow-up information (median follow-up period 7 years) was available for all patients, among whom 42 (66.7%)...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2002.146
更新日期:2002-07-01 00:00:00
abstract::Haptoglobin (Hpt) is known to capture circulating free hemoglobin (Hb) and bind apolipoprotein (Apo) A-I or E. Here, we report that Hb can be tightly bound by most of Hpt molecules (TB-Hpt, 80%), whereas loosely bound by a minor part of them (LB-Hpt, 20%). LB-Hpt amount was significantly increased (over 60%) in patien...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2011.033
更新日期:2011-04-01 00:00:00
abstract::Neuritic plaques of Alzheimer patients are composed of multiple protein components. Among them, the amyloid beta-peptides (Abeta) 1-40/42 and further N- and C-terminally modified fragments of Abeta are highly abundant. Most prominent are the isoaspartate (isoAsp)-Abeta peptides and pyroglutamyl (pGlu)-Abeta. While pGl...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2008.125
更新日期:2008-08-01 00:00:00
abstract::The heterodimer consisting of ecdysteroid receptor (EcR) and ultraspiracle (USP), both of which are members of the nuclear receptor superfamily, is considered to be the functional ecdysteroid receptor. Here we analyzed the subcellular distribution of EcR and USP fused to fluorescent proteins. The experiments were carr...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2005.055
更新日期:2005-05-01 00:00:00
abstract::We present a novel strategy, termed CISTEM, which allows direct in vivo screening of polypeptides displayed on the surface of E. coli cells by a combination of ligand-mediated protection and phage-mediated selection. The effectiveness of this new approach was demonstrated by displaying the T7.tag on the surface of E. ...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2001.202
更新日期:2001-12-01 00:00:00
abstract::Gaucher disease (GD) is a lysosomal storage disorder, caused by an impaired function of β-glucocerebrosidase, which results in accumulation of glucocerebroside in cells, and altered membrane ordering. Using electron paramagnetic resonance spin labeling, a statistically significant difference in the order parameter bet...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/hsz-2017-0241
更新日期:2018-04-25 00:00:00
abstract::A controlled interaction of materials with their surrounding biological environment is of great interest in many fields. Multifunctional coatings aim to provide simultaneous modulation of several biological signals. They can consist of various combinations of bioactive, and bioinert components as well as of reporter m...
journal_title:Biological chemistry
pub_type: 杂志文章,评审
doi:10.1515/hsz-2016-0204
更新日期:2017-01-01 00:00:00
abstract::Acid ceramidase (N-acylsphingosine deacylase, EC 3.5.1.23; AC) is the lipid hydrolase responsible for the degradation of ceramide into sphingosine and free fatty acids within lysosomes. The enzymatic activity was first identified over four decades ago and is deficient in two rare inherited disorders, Farber lipogranul...
journal_title:Biological chemistry
pub_type: 杂志文章,评审
doi:10.1515/hsz-2014-0290
更新日期:2015-06-01 00:00:00
abstract::RNAs are key players in life as they connect the genetic code (DNA) with all cellular processes dominated by proteins. They contain a variety of chemical modifications and many RNAs fold into complex structures. Here, we review recent progress in the analysis of RNA modification and structure on the basis of stable is...
journal_title:Biological chemistry
pub_type: 杂志文章,评审
doi:10.1515/hsz-2018-0447
更新日期:2019-06-26 00:00:00
abstract::Transforming growth factor-beta1 (TGF-beta1) has a biphasic effect on the growth of renal epithelial cells. In transformed cells, TGF-beta1 appears to accelerate the proliferation of malignant cells. The diverse cellular functions of TGF-beta1 are regulated by three high-affinity serine/threonine kinase receptors, nam...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2005.045
更新日期:2005-04-01 00:00:00
abstract::N-acyl homoserine lactones (AHLs) are quorum sensing (QS) signal molecules used by most Gram-negative pathogenic bacteria. In this article the lactonase activity of the preparations based on hexahistidine-tagged organophosphorus hydrolase (His6-OPH) towards AHLs was studied. Initially, three of the most interesting β-...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/hsz-2018-0162
更新日期:2018-07-26 00:00:00
abstract::Type I interferons (IFNs) produced primarily by plasmacytoid dendritic cells (pDCs) as part of the innate immune response to infectious agents induce the maturation of myeloid DCs and enhance antigen presentation. Type I IFNs also enhance apoptosis of virus-infected cells, stimulate cross priming and enhanced presenta...
journal_title:Biological chemistry
pub_type: 杂志文章,评审
doi:10.1515/bc.2008.051
更新日期:2008-05-01 00:00:00
abstract::γ-Secretase is a membrane-embedded protease complex with presenilin as the catalytic component. Cleavage within the transmembrane domain of the amyloid β-protein precursor (APP) by γ-secretase produces the C-terminus of the amyloid β-peptide (Aβ), a proteolytic product prone to aggregation and strongly linked to Alzhe...
journal_title:Biological chemistry
pub_type: 杂志文章,评审
doi:10.1515/hsz-2012-0140
更新日期:2012-09-01 00:00:00
abstract::It is not rare that controversial indications about the presence or the expression level of multidrug-resistant (MDR) proteins come out from different laboratories upon examination of identical tumor specimens. Distinct aspects, including the use of weakly discriminating monoclonal antibodies (MAbs) and/or unsuitable ...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/bchm.1997.378.6.503
更新日期:1997-06-01 00:00:00
abstract::Mitochondria are indispensable cellular organelles providing ATP and numerous other essential metabolites to ensure cell survival. Reactive oxygen species (ROS), which are formed as side reactions during oxidative phosphorylation or by external agents, induce molecular damage in mitochondrial proteins, lipids/membrane...
journal_title:Biological chemistry
pub_type: 杂志文章,评审
doi:10.1515/hsz-2017-0206
更新日期:2017-12-20 00:00:00
abstract::The BCL2 family of genes (B-cell CLL/lymphoma 2; Bcl-2) plays a pivotal role in the highly regulated process of apoptosis. We have recently cloned a newly identified member of this family, BCL2L12, which was found to be differentially expressed in many tumors. It is known that topotecan and methotrexate act through in...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2006.203
更新日期:2006-12-01 00:00:00
abstract::The stress-activated protein kinase p38/SAPK2 is known to regulate the activity of transcription factors and to control expression of several genes at the transcriptional or post-transcriptional level. In order to identify genes whose expression is under the control of p38/SAPK2 activity, we have compared the mRNA lev...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2000.026
更新日期:2000-03-01 00:00:00
abstract::LFM-A13, or alpha-cyano-beta-hydroxy-beta-methyl-N-(2,5-dibromophenyl)propenamide, was shown to inhibit Bruton's tyrosine kinase (Btk). Here we show that LFM-A13 efficiently inhibits erythropoietin (Epo)-induced phosphorylation of the erythropoietin receptor, Janus kinase 2 (Jak2) and downstream signalling molecules. ...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2004.045
更新日期:2004-05-01 00:00:00
abstract::Major vault protein (MVP) is the predominant member of a large cytosolic ribonucleoprotein particle, termed vault. We have previously shown that MVP derived from electric ray electric organ becomes phosphorylated by protein kinase C in vitro and by tyrosine kinase in vivo. Here we show that MVP from two mammalian cell...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2001.180
更新日期:2001-10-01 00:00:00
abstract::The molecular architectures of the catalytic core of protein phosphatase 1 (PP1) and protein phosphatase 2B (PP2B) are similar, and both contain a beta12-beta13 loop that consists of non-conserved residues. A truncation mutant containing the PP2B catalytic domain has previously been constructed in our laboratory, and ...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2006.183
更新日期:2006-10-01 00:00:00
abstract::Group II introns are autocatalytic RNAs which self-splice in vitro. However, in vivo additional protein factors might be involved in the splicing process. We used an affinity chromatography method called 'StreptoTag' to identify group II intron binding proteins from Saccharomyces cerevisiae. This method uses a hybrid ...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2004.076
更新日期:2004-07-01 00:00:00
abstract::The HIRIP3 protein had been identified from its interaction with the HIRA histone chaperone. Experiments using anti-peptide antisera indicated that this 556-aa protein is nuclear throughout the cell cycle and excluded from condensed chromatin during mitosis. Based on its electrophoretic migration and sensitivity to ph...
journal_title:Biological chemistry
pub_type: 杂志文章
doi:10.1515/BC.2007.045
更新日期:2007-04-01 00:00:00