Do viruses have proteins

Do viruses have proteins

http://www.chacha.com/question/do-viruses-have-proteins

A virus is any of various simple submicroscopic parasites of plants, animals, and bacteria that often cause disease and that consist essentially of a core of RNA or DNA surrounded by a protein coat. ChaCha on!

Does a virus have a protein coat?

http://wiki.answers.com/Q/Are+virus+infectious+proteins

Yes. All viruses are composed of a nucleic acid surrounded by a protein capsid. When the capsid is not present, the the infectious nucleic acid is called viroid. When the nucleic acid is not present, the infectious protein coating is called…

Why are a viruses proteins important?

http://wiki.answers.com/Q/Why_are_a_viruses_proteins_important

They help the virus attach to the host cell.

Related Questions Answered on Y!Answers

Does Canine Distemper Virus have proteins?

Q: If so, are they capsid or non capsid?

A: All viruses have capsids, and all viruses have a variety of proteins other than their capsids. Some viruses have a lipid bilayer envelope and some do not.Cainine Distemper is a paramyxovirus, and is enveloped. A diagram of it can be found here: http://www.nature.com/nrmicro/journal/v4/n12/images/nrmicro1550-i1.jpgThe general structure of paramyxoviruses is explained here:http://en.wikipedia.org/wiki/Paramyxovirus#Physical_structure

what two things are found in all viruses?

Q: A. Protein cap and nucleic acidB. Protein Cap and envelopeC. Nucleic Acid and enveloped. All viruses have a protein cap, nucleic acid, and envelope.(my answer is probably… B. viruses do have protein in them correct?

A: Search your answer in the para below from wikipedia ==A virus (from the Latin virus meaning toxin or poison) is a sub-microscopic infectious agent that is unable to grow or reproduce outside a host cell. Each viral particle, or virion, consists of genetic material, DNA or RNA, within a protective protein coat called a capsid. The capsid shape varies from simple helical and icosahedral (polyhedral or near-spherical) forms, to more complex structures with tails or an envelope. Viruses infect cellular life forms and are grouped into animal, plant and bacterial types, according to the type of host infected.http://en.wikipedia.org/wiki/Virus

(Article on dogs) Does this article mean dogs can have hiv ?

Q: Why are half of dogs ‘HIV’-positive, and if my breeder dog Cerberus, whom I love deeply turns out to be positive (he tested positive, then negative, then positive, then negative again), should I have him put to sleep?Studies with canine sera that contain antibodies which recognize human immunodeficiency virus structural proteins. Strandstrom HV, Higgins JR, Mossie K, Theilen GH. College of Veterinary Medicine, Helsinki, Finland):Abstract. In a serological survey, using the immunoblotting technique, we found that substantial numbers of dog sera from both normal and diseased dogs, including dogs with neoplasia, reacted with one or more human immunodeficiency virus (HIV) recombinant proteins. A total of 144 dog sera were tested, and 72 (50%) of them reacted with one or more HIV recombinant structural proteins. Ten dog sera were also tested for reactivity with simian immunodeficiency virus (SIV), feline immunodeficiency virus (FIV), and caprine arthritis encephalitis virus (CAEV). Six dog sera reacted with at least the major core protein of HIV, while one of the dog sera tested reacted with SIV core protein, and there were no reactions with the viral proteins of either FIV or CAEV. Cell extracts from canine peripheral blood lymphocytes cocultivated with human cells and an extract of human cells infected with HIV were immunoblotted against dog sera which previously tested positive or negative on HIV recombinant protein commercially available Western blot strips. Two lymphocyte lysates and the HIV-infected Hut cell lysate reacted with the Western blot strip-positive dog serum; however, no reactions were seen with the Western blot strip-negative dog serum).”Incidently, it has also been demonstrated that goats and cows are also known to test positive using the current “HIV” test kits, EG. (Willman et al., Heterophile Antibodies to Bovine and Caprine Proteins Causing False-Positive Human Immunodeficiency Virus Type 1 and Other Enzyme-Linked Immunosorbent Assay Results. Clinical and Diagnostic Laboratory Immunology, p. 615-616, Vol. 6, No. 4, July 1999)Remarkably, the CDC responded soon afterward:Dogs do NOT become infected with the Human Immunodeficiency Virus (HIV). A dog would not test positive for HIV. HIV is the Human Immunodeficiency Virus. HIV is a member of the human retrovirus family. All viruses and retroviruses are simple microbes that have no metabolism and cannot function independently of other life forms. They lack the basic machinery for reproduction and must invade other living organisms to reproduce or replicate. In other words, retroviruses and viruses rely on the cells of the host for reproduction to survive. Each retrovirus has a specific host. For example, a human retrovirus, like HIV, requires a human host. So a human retrovirus cannot survive in other animals or insects. Animals, like dogs, have their own retroviruses. These animalretroviruses do not affect humans.The article (Standtrom et al.) seems to be stating that antibodies (substances produced by the body to fight infection) in a dog’s blood reacted to structural proteins of the virus (HIV) and NOT stating that dogs are infected with HIV.”This answer from the CDC prompted the following thoughts:It seems to me that the really important point to make from this is not just that dogs, cows, sheep, have ‘HIV surrogate markers’ but never develop ‘AIDS’. The more important question I take from the studies you mentioned would be: Why, when antibodies of a dog react to certain proteins manufactured in a lab, is this interpreted as ‘antibodies reacting to structural proteins of HIV’ but at the same time NOT evidence that ‘[these] dogs are infected with HIV’, yet when antibodies of a human react to exactly the same proteins, this is taken as evidence of ‘HIV’ infection?The CDC’s interpretation of Strandstrom et al seems to be an (indirect) admission that simply detecting a certain combination of antibodies to proteins in blood is not sufficient to conclude infection with an exogenous retrovirus. Certainly, they believe felines are capable of such retroviral infection, as I see countless webpages devoted to ‘FIV’ (‘feline immunodeficiency virus’). So, my question to the CDC would be: how do they know that detection of a certain combination of antibodies to proteins indicates infection with an exogenous retrovirus in a human, but not in a dog? An equally reasonable interpretation might be that these combinations of antibodies indicate infection with an exogenous retrovirus in a dog, but not a human. So, how do they know it is onease and not the other?The only way I can see the CDC can claim infection in one case and not the other, is if some additional validation process had been achieved in the one case and failed in the other. I’m not aware of any such process, as all such ‘validation processes’ that I’m aware of consist of simply testing WB against itself (reproducibility) or using some vague combination of indi

A: No, this article does not mean that dogs can contract HIV- it says so in paragraph 3 after the short intro. It only means that the dogs reacted to some of the proteins associated with HIV; this is not at all surprising as many viruses for humans have equivalents in the animal kingdom that have the same or similar protein structures. This is also seen in poxviruses.