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any of a large family of proteinsprotein,
any of the group of highly complex organic compounds found in all living cells and comprising the most abundant class of all biological molecules. Protein comprises approximately 50% of cellular dry weight.
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 of a spherical or globular shape that are widely distributed throughout the plant and animal kingdoms. Many of them have been prepared in pure crystalline form. The term globulin is a partly procedural one, used in classifying an otherwise diverse group of proteins that are soluble in water or dilute salt solutions. Among the most important are the immunoglobulins (Ig), the antibodies of the immune system (see immunityimmunity,
ability of an organism to resist disease by identifying and destroying foreign substances or organisms. Although all animals have some immune capabilities, little is known about nonmammalian immunity.
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). They are classified into five types based upon structure: IgA, IgD, IgE, IgG, and IgM. IgG or &ggr;-globulin is the most common and forms about 70% of the immunoglobins in the blood. Other globulins are involved in the transport of a variety of substances, including lipidslipids,
a broad class of organic products found in living systems. Most are insoluble in water but soluble in nonpolar solvents. The definition excludes the mineral oils and other petroleum products obtained from fossil material.
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, hormoneshormone,
secretory substance carried from one gland or organ of the body via the bloodstream to more or less specific tissues, where it exerts some influence upon the metabolism of the target tissue.
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, and inorganic ions.


A general name for any member of a heterogeneous group of serum proteins precipitated by 50% saturated ammonium sulfate. See Protein, Serum

The introduction of electrophoresis during the 1930s permitted subdivision of the globulins into alpha, beta, and gamma globulins on the basis of relative mobility at alkaline pH (8.6). However, each of these subgroups, though electrophoretically homogeneous, consists of a great variety of proteins with different biological properties and markedly different sizes and chemical properties other than net charge. Thus the α2-globulins, for example, as defined by moving boundary or paper electrophoresis, contain proteins ranging in molecular weight from approximately 50,000 to approximately 1,000,000 (α2-macroglobulin), each with differing functions. See Immunoglobulin


A heat-labile serum protein precipitated by 50% saturated ammonium sulfate and soluble in dilute salt solutions.


any of a group of simple proteins, including gamma globulin, that are generally insoluble in water but soluble in salt solutions and coagulated by heat
References in periodicals archive ?
Increasingly consumers want to interact with a company in a variety of ways, be it through a website, call centre, email or in-store," said Cliff Conneighton, senior vice president of marketing, ATG.
ATG, Art Technology Group, and ATG Wisdom are registered trademarks of Art Technology Group, Inc.
We are very pleased to welcome Jeppesen to the roster of global brands that have selected ATG Commerce to meet their online needs," said Cliff Conneighton, senior vice president of marketing, ATG.
ATG takes live chat a step further than other industry solutions by leveraging its unique Wisdom platform to turn interactions into revenue enhancing opportunities.
All of the finalists and winners of the Uncommon Wisdom Awards represent the best of what ATG offers to its users and their customers," said Cliff Conneighton, ATG's senior vice president of marketing.
Rich Internet Applications: ATG partner and sponsor Allurent, along with ATG customer Intuit will discuss deploying rich Internet applications on the ATG Commerce platform.
Urban Outfitters' choice to implement the Wisdom-enabled ATG Commerce platform underscores a very strong industry trend," said Cliff Conneighton, senior vice president of marketing, ATG.
In conjunction with its regularly scheduled first-quarter 2006 financial results news release, ATG (Art Technology Group, Inc.
The ATG Wisdom Service solutions leverage our commitment to accepted standards and best practices for service and support," said Erik Hille, product marketing director, ATG.
The agenda is designed for both business and technology professionals and will contain relevant information for all users of ATG technology regardless of whether they use applications for e-commerce, marketing or e-service and support.
Neiman Marcus Direct, which conducts print, catalog and online operations under the Neiman Marcus, Horchow and Bergdorf Goodman brand names, will upgrade its ATG Commerce platform, while implementing several new ATG e-marketing and e-commerce products, including ATG Campaign Optimizer, ATG Content Administration, ATG Outreach (ATG's outbound email and proactive service product), ATG Response Management (ATG's email response product) and ATG Merchandising.
ATG is thrilled that OfficeMax has chosen our solutions to drive their next-generation customer experience," said Cliff Conneighton, senior vice president of marketing, ATG.