Anti-MERS-CoV Spike Protein polyclonal antibody (CABT-B1951)

Rabbit Anti-MERS-CoV Spike Protein (aa 1-1297) polyclonal antibody for ELISA

Specifications


Host Species
Rabbit
Antibody Isotype
IgG
Species Reactivity
MERS-CoV
Immunogen
Recombinant MERS-CoV (NCoV / Novel coronavirus) Spike Protein (ECD, aa 1-1297)
Conjugate
Unconjugated

Applications


Application Notes
ELISA: 0.5-1 μg/mL
*Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own experiment using appropriate negative and positive controls.

Target


Alternative Names
Novel coronavirus Spike Protein

Citations


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References


Prior and novel coronaviruses, Coronavirus Disease 2019 (COVID-19), and human reproduction: what is known?

FERTILITY AND STERILITY

Authors: Segars, James; Katler, Quinton; McQueen, Dana B.; Kotlyar, Alexander; Glenn, Tanya; Knight, Zac; Feinberg, Eve C.; Taylor, Hugh S.; Toner, James P.; Kawwass, Jennifer F.

Objective: To summarize current understanding of the effects of novel and prior coronaviruses on human reproduction, specifically male and female gametes, and in pregnancy. Design: Review of English publications in PubMed and Embase to April 6, 2020. Method(s): Articles were screened for reports including coronavirus, reproduction, pathophysiology, and pregnancy. Intervention(s): None. Main Outcome Measure(s): Reproductive outcomes, effects on gametes, pregnancy outcomes, and neonatal complications. Result(s): Seventy-nine reports formed the basis of the review. Coronavirus binding to cells involves the S1 domain of the spike protein to receptors present in reproductive tissues, including angiotensin-converting enzyme-2 (ACE2), CD26, Ezrin, and cyclophilins. Severe Acute Respiratory Syndrome Coronavirus 1 (SARS-CoV-1) may cause severe orchitis leading to germ cell destruction in males. Reports indicate decreased sperm concentration and motility for 72-90 days following Coronavirus Disease 2019 (COVID-19) infection. Gonadotropin-dependent expression of ACE2 was found in human ovaries, but it is unclear whether SARS-Coronavirus 2 (CoV-2) adversely affects female gametogenesis. Evidence suggests that COVID-19 infection has a lower maternal case fatality rate than SARS or Middle East respiratory syndrome (MERS), but anecdotal reports suggest that infected, asymptomatic women may develop respiratory symptoms postpartum. Coronavirus Disease 2019 infections in pregnancy are associated with preterm delivery. Postpartum neonatal transmission from mother to child has been reported. Conclusion(s): Coronavirus Disease 2019 infection may affect adversely some pregnant women and their offspring. Additional studies are needed to assess effects of SARS-CoV-2 infection on male and female fertility. ((C) 2020 by American Society for Reproductive Medicine.)

Host cell proteases: Critical determinants of coronavirus tropism and pathogenesis

VIRUS RESEARCH

Authors: Millet, Jean Kaoru; Whittaker, Gary R.

Coronaviruses are a large group of enveloped, single-stranded positive-sense RNA viruses that infect a wide range of avian and mammalian species, including humans. The emergence of deadly human coronaviruses, severe acute respiratory syndrome coronavirus (SARS-CoV), and Middle East respiratory syndrome coronavirus (MERS-CoV) have bolstered research in these viral and often zoonotic pathogens. While coronavirus cell and tissue tropism, host range, and pathogenesis are initially controlled by interactions between the spike envelope glycoprotein and host cell receptor, it is becoming increasingly apparent that proteolytic activation of spike by host cell proteases also plays a critical role. Coronavirus spike proteins are the main determinant of entry as they possess both receptor binding and fusion functions. Whereas binding to the host cell receptor is an essential first step in establishing infection, the proteolytic activation step is often critical for the fusion function of spike, as it allows for controlled release of the fusion peptide into target cellular membranes. Coronaviruses have evolved multiple strategies for proteolytic activation of spike, and a large number of host proteases have been shown to proteolytically process the spike protein. These include, but are not limited to, endosomal cathepsins, cell surface transmembrane protease/serine (TMPRSS) proteases, furin, and trypsin. This review focuses on the diversity of strategies coronaviruses have evolved to proteolytically activate their fusion protein during spike protein biosynthesis and the critical entry step of their life cycle, and highlights important findings on how proteolytic activation of coronavirus spike influences tissue and cell tropism, host range and pathogenicity. (C) 2014 Elsevier B.V. All rights reserved.

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