نتایج جستجو برای: synthetic peptides

تعداد نتایج: 213529  

2013
Zhongji Meng Ruihua Song Yue Chen Yang Zhu Yanhui Tian Ding Li Daxiang Cui

A method for quickly screening and identifying dominant B cell epitopes was developed using hepatitis B virus (HBV) surface antigen as a target. Eleven amino acid fragments from HBV surface antigen were synthesized by 9-fluorenylmethoxy carbonyl solid-phase peptide synthesis strategy, and then CdTe quantum dots were used to label the N-terminals of all peptides. After optimizing the factors for...

Journal: :Infection and immunity 2003
Zhen Li C Marcela Díaz-Montero Gustavo Valbuena Xue-Jie Yu Juan P Olano Hui-Min Feng David H Walker

The 1.2-kb DNA fragment of the Rickettsia conorii outer membrane protein B gene (OmpB(451-846)) was subcloned using site-specific PCR primers and expressed as six smaller fragments: OmpB(458-652), OmpB(595-744), OmpB(595-654), OmpB(645-692), OmpB(689-744), and OmpB(739-848). NCTC cells transfected with a mammalian expression vector expressing the fragments OmpB(689-744) and OmpB(739-848) stimul...

Background: RADA16I represents one of promising hydrogel forming peptides. Several implementations of RADA16I hydrogels have proven successful in the field of regenerative medicine and tissue engineering. However, RADA16I peptides used in various studies utilize synthetic peptides and so far, only two research articles have been published on RADA16I peptide recombinant producti...

Journal: :Clinical chemistry 2004
Wai-Yan Choy Shu-Guang Lin Paul Kay-Sheung Chan John Siu-Lun Tam Y M Dennis Lo Ida Miu-Ting Chu Sau-Na Tsai Ming-Qi Zhong Kwok-Pui Fung Mary Miu-Yee Waye Stephen Kwok-Wing Tsui Kai-On Ng Zhi-Xin Shan Min Yang Yi-Long Wu Zhan-Yi Lin Sai-Ming Ngai

BACKGROUND The S (spike) protein of the etiologic coronavirus (CoV) agent of severe acute respiratory syndrome (SARS) plays a central role in mediating viral infection via receptor binding and membrane fusion between the virion and the host cell. We focused on using synthetic peptides for developing antibodies against SARS-CoV, which aimed to block viral invasion by eliciting an immune response...

2012
Sang Hoon Joo

There are many cyclic peptides with diverse biological activities, such as antibacterial activity, immunosuppressive activity, and anti-tumor activity, and so on. Encouraged by natural cyclic peptides with biological activity, efforts have been made to develop cyclic peptides with both genetic and synthetic methods. The genetic methods include phage display, intein-based cyclic peptides, and mR...

2017
Daniel J Adams Travis G Nemkov John P Mayer William M Old Michael H B Stowell

Understanding the pathophysiology of Alzheimer disease has relied upon the use of amyloid peptides from a variety of sources, but most predominantly synthetic peptides produced using t-butyloxycarbonyl (Boc) or 9-fluorenylmethoxycarbonyl (Fmoc) chemistry. These synthetic methods can lead to minor impurities which can have profound effects on the biological activity of amyloid peptides. Here we ...

Journal: :The Journal of clinical investigation 1980
H Oyama H J Hirsch K H Gabbay A Permutt

Using a radioimmunoassay with labeled synthetic tetradecapeptide somatostatin, a large amount of immunoreactive somatostatin was found in the principal pancreatic islet of the channel catfish (Ictalurus punctata). The purpose of these experiments was to isolate and characterize the somatostatin-like material. Extracts of islets were chromatographed on a Bio-Gel P-30 column, and over 90% of the ...

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