Abstract:
:The entire extracellular domain of the human heat-stable enterotoxin (ST) receptor as well as a truncated N-terminal domain were cloned as glutathione S-transferase fusion proteins and expressed in Escherichia coli. The recombinant fusion proteins were purified from both the cytosol and the inclusion body fractions by selective detergent extraction followed by glutathione-agarose affinity chromatography. The purified protein, corresponding to the entire extracellular domain, bound the stable toxin peptide with an affinity comparable to that of the native receptor characterized from the human colonic T84 cell line. No binding was observed with the N-terminal truncated fragment of the receptor under similar conditions. Polyclonal antibodies were raised to the entire extracellular domain fusion protein as well as the truncated extracellular domain fusion protein, and the antibodies were purified by affinity chromatography. Addition of the purified antibodies to T84 cells inhibited ST binding and abolished ST-mediated cGMP production, indicating that critical epitopes involved in ligand interaction are present in the N-terminal fragment of the receptor. Purified antibodies recognized a single protein of Mr 160,000 Da on Western blotting with T84 membranes, corresponding to a size of the native glycosylated receptor in T84 cells. These studies are the first report of the expression, purification, and characterization of any member of the guanylyl cyclase family of receptors in E. coli and show that binding of the toxin to the extracellular domain of the receptor is possible in the absence of any posttranslational modifications such as glycosylation. The recombinant fusion proteins as well as the antibodies that we have generated could serve as useful tools in the identification of critical residues of the extracellular domain involved in ligand interaction.
journal_name
Protein Expr Purifjournal_title
Protein expression and purificationauthors
Nandi A,Mathew R,Visweswariah SSdoi
10.1006/prep.1996.0087subject
Has Abstractpub_date
1996-09-01 00:00:00pages
151-9issue
2eissn
1046-5928issn
1096-0279pii
S1046-5928(96)90087-Xjournal_volume
8pub_type
杂志文章abstract::Stromal-cell-derived factor-1 (SDF-1alpha) is an 8-kDa chemokine that is constitutively expressed in bone-marrow-derived stromal cells and has been identified as a ligand for the CXCR4 receptor. We produced the chemokine recombinantly as methionine-SDF-1alpha in Escherichia coli without the leader peptide sequence. Th...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1006/prep.2001.1402
更新日期:2001-04-01 00:00:00
abstract::Human D-amino acid oxidase (hDAAO) is a flavoprotein that plays a key role in the pathophysiology of schizophrenia. So far, the biochemical characterization of this enzyme has been hampered by the difficulty of expressing it in a common heterologous host such as Escherichia coli. Increasing amounts of recombinant hDAA...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2009.05.013
更新日期:2009-11-01 00:00:00
abstract::A baculovirus vector system that expresses cloned DNA sequences as glutathione S-transferase fusion proteins was developed. This system was used to express and purify the lymphocyte-specific tyrosine kinase p56lck. This recombinant p56lck was purified to homogeneity in a single chromatography step using glutathione re...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1006/prep.1993.1051
更新日期:1993-10-01 00:00:00
abstract::Na+, K+-ATPase beta2 subunit (NKA1b2) is not only a regulator of Na+, K+-ATPase, but also functions in the interaction between neuron and glia cells as a Ca2+-dependent adhesion molecule. To further study the function of NKA1b2, the anti-NKA1b2 polyclonal antibody was prepared to recognize the outer-membrane carboxyl ...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2004.05.003
更新日期:2004-09-01 00:00:00
abstract::The Pseudomonas sp. have been long recognized for their exogenous lipolytic activities yet the genus still contains a lot of unexplored strains. Due to the versatile metabolic machinery and their potential for adaptation to fluctuating environmental conditions Pseudomonas sp. are of great interest for biotechnological...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2018.08.007
更新日期:2019-01-01 00:00:00
abstract::Antibacterial peptides from various sources express different antibacterial activity. In order to obtain a high activity antibacterial peptide, the sequences of four antimicrobial peptides--Protegrin-1, 4 kDa Scorpion Defensin, Metalnikowin-2A and Sheep Myeloid Antibacterial Peptide SMAP-29--were exploited to generate...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2007.08.006
更新日期:2008-01-01 00:00:00
abstract::Antibodies specific to β-Glucocerebrosidase were selected from phage displayed naïve scFv libraries. Biopannings were performed against recombinant human protein β-Glucocerebrosidase immobilized on polystyrene surface, specific phages were eluted with 50% ethylene glycol in citrate buffer (pH 6.0). Several specific bi...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2020.105573
更新日期:2020-06-01 00:00:00
abstract::PLD's (Phospholipases D) are ubiquitously expressed proteins involved in many transphosphatidylation reactions. They have a bi-lobed structure composed by two similar domains which at their interface reconstitute the catalytic site through the association of the two conserved HxKx(4)Dx(6)GSxN motifs. PLD1 interacts wi...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2008.02.012
更新日期:2008-06-01 00:00:00
abstract::Advances in expressed protein ligation (EPL) methods that permit specific introduction of unique modifications into proteins have facilitated protein engineering, structure-function and protein interaction studies. An EPL-generated hybrid exchangeable apolipoprotein has been constructed from recombinant fragments of a...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2007.04.002
更新日期:2007-08-01 00:00:00
abstract::The human melanocortin 4 receptor (MC4r) was successfully expressed in Sf9 cells using the baculovirus infection system. N- and C-terminally His-tagged receptors generated B(max) values of 14 and 23 pmol receptor/mg membrane protein, respectively. The highest expression level obtained with the C-terminally His-tagged ...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2004.06.018
更新日期:2004-10-01 00:00:00
abstract::The role of FIC (Filamentation induced by cAMP)(2) domain containing proteins in the regulation of many vital pathways, mostly through the transfer of NMPs from NTPs to specific target proteins (NMPylation), in microorganisms, higher eukaryotes, and plants is emerging. The identity and function of FIC domain containin...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2012.08.020
更新日期:2012-11-01 00:00:00
abstract::Previously, the lysozyme gene of the Klebsiella phage K11 was partially sequenced in our lab. Using the sequence information the lysozyme gene of the Klebsiella phage K11 was amplified and cloned using the polymerase chain reaction of the pfu DNA polymerase. The nucleotide sequence of phage K11 lysozyme gene was deter...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2005.03.026
更新日期:2005-07-01 00:00:00
abstract::PagP, a beta-barrel membrane protein found in Gram-negative bacteria, expresses robustly in inclusion bodies when its signal sequence is removed. We have developed a new fusion protein expression system based on PagP and demonstrated its utility in the expression of the unstructured N-terminal region of human cardiac ...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2012.07.007
更新日期:2012-09-01 00:00:00
abstract::G-protein coupled receptors (GPCRs) are seven transmembrane helical proteins involved in cell signaling and response. They are targets for many existing therapeutic agents, and numerous drug discovery efforts. Production of large quantities of these receptors for drug screening and structural biology remains challengi...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2006.10.017
更新日期:2007-04-01 00:00:00
abstract::A strategy for the purification and cleavage of chimeric recombinant proteins based on a genetically engineered metal-binding peptide and a human renin cleavage site is described. Vectors were constructed to direct the synthesis of chimeric human immunodeficiency virus (HIV) reverse transcriptase (RT) or beta-galactos...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/1046-5928(91)90073-r
更新日期:1991-04-01 00:00:00
abstract::Preventing protein aggregation is crucial for various protein studies, and has a large potential for remedy of protein misfolding or aggregates-linked diseases. In this study, we demonstrated the hyper-acidic protein fusion partners, which were previously reported to enhance the soluble expression of aggregation-prone...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2011.06.004
更新日期:2011-11-01 00:00:00
abstract::Vibriolysin, an extracellular protease of Vibrio proteolyticus, is synthesized as a preproenzyme. The N-terminal propeptide functions as an intramolecular chaperone and an inhibitor of the mature enzyme. Extracellular production of recombinant vibriolysin has been achieved in Bacillus subtilis, but not in Escherichia ...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2008.08.001
更新日期:2008-12-01 00:00:00
abstract::The human iron-binding protein lactoferrin (hLf) has been implicated in a number of important physiological pathways, including those regulating immune function and tumor growth. In an effort to develop an efficient system for production of recombinant hLf (rhLf) that is structurally and functionally equivalent to the...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2009.01.003
更新日期:2009-05-01 00:00:00
abstract::Serine hydroxymethyltransferase (SHMT) plays a key role in cell physiology as it participates in the different interconversion pathway of folate coenzymes, provides almost exclusively folate one carbon fragments for the biosynthesis of a variety of end products. For the first time, Mycobacterium leprae glyA gene, enco...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2007.04.017
更新日期:2007-09-01 00:00:00
abstract::Glucose-6-phosphate dehydrogenase was purified from human placenta using DEAE-Sepharose fast flow, 2',5'-ADP Sepharose 4B column chromatography, and chromatofocusing on PBE 94 with PB 74. The enzyme was purified with 62% yield and had a specific activity of 87 units per milligram protein. The pH optimum was determined...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1006/prep.2000.1370
更新日期:2001-03-01 00:00:00
abstract::Cardiomyopathy-related mutations in human cardiac troponin subunits, including troponin C (hcTnC), troponin I (hcTnI), and troponin T (hcTnT), are well-documented. Recently, it has been recognised that human cardiac troponin (hcTn) is a sophisticated allosteric system. Therefore, the effect of drugs on this protein co...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2012.10.005
更新日期:2013-02-01 00:00:00
abstract::The sequence and structure of the target protein exert a marked effect on its soluble expression in Escherichia coli. The effects of the mutation of an amylase isolated from Bacillus licheniformis (BLA) on its soluble expression in E. coli were investigated. A random mutation library of BLA was constructed to screen f...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2015.12.010
更新日期:2016-04-01 00:00:00
abstract::A soluble N-terminal domain of the Escherichia coli adenylyl transferase (ATase) is responsible for deadenylylation activity of the intact enzyme. Previous studies of the deadenylylation activity have involved a fragment, AT-N423 (residues 1 to 423), which was extended by 17 amino acids to give AT-N440. This new domai...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2003.11.001
更新日期:2004-03-01 00:00:00
abstract::The AP-1 transcription factor is a dimeric protein complex formed primarily between Jun (c-Jun, JunB, JunD) and Fos (c-Fos, FosB, Fra-1, Fra-2) family members. These distinct AP-1 complexes are expressed in many cell types and modulate target gene expression implicated in cell proliferation, differentiation, and stres...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2008.01.016
更新日期:2008-05-01 00:00:00
abstract::Formation of biominerals often involves specific proteins that modulate the process of matrix assembly, nucleation, and crystal growth. AP7 is an aragonite-associated protein of 7 kDa and is intrinsically disordered. The structural disorder of AP7 makes it very difficult to express in Escherchiacoli. In this work, we ...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2014.05.002
更新日期:2014-08-01 00:00:00
abstract::The iron-sulfur protein subunit, known as the Rieske protein, is one of the central components of the cytochrome b(6)f complex residing in chloroplast and cyanobacterial thylakoid membranes. We have constructed plasmids for overexpression in Escherichia coli of full-length and truncated Rieske (PetC) proteins from the...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/s1046-5928(03)00016-0
更新日期:2003-05-01 00:00:00
abstract::To study the subunit structure and the active site of human immunodeficiency virus reverse transcriptase (RT), the enzyme was expressed in E. coli and purified to homogeneity in large quantities. The recombinant enzyme consists of two major polypeptides of 66,000 and 53,000 Da in equimolar amounts and a minor species ...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/1046-5928(92)90005-h
更新日期:1992-08-01 00:00:00
abstract::Human lysosomal beta-hexosaminidase exists in two major forms: the A isoform is composed of both alpha and beta chains, while the B form is a homopolymer of beta chains. Deficiency of beta-hexosaminidase underlies the GM2 gangliosidoses. We have produced active beta-hexosaminidase B in cultured insect (Sf9) cells by i...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/1046-5928(90)90003-h
更新日期:1990-11-01 00:00:00
abstract::The covalent addition of 4-amino-4-deoxy-L-arabinose (L-Ara4N) groups to lipid A, which resides in the outer membranes of bacteria such as Salmonella typhimurium and Escherichia coli, is the final step in the polymyxin-resistance pathway in these organisms. This modification is catalyzed by the inner membrane protein ...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/j.pep.2005.08.028
更新日期:2006-03-01 00:00:00
abstract::In microorganisms and plants, mevalonate kinase is involved in the biosynthesis of isoprenoid derivatives, one of the largest groups of natural products. We subcloned the gene of mevalonate kinase from Methanococcus jannaschii into a bacterial expression vector pLM1 with six continuous histidine codons attached to the...
journal_title:Protein expression and purification
pub_type: 杂志文章
doi:10.1016/s1046-5928(03)00101-3
更新日期:2003-08-01 00:00:00