| 释义 |
prosthetic group
prosthetic groupn. The nonprotein component of a conjugated protein, as the heme group in hemoglobin.prosthetic group n (Biochemistry) the nonprotein component of a conjugated protein, such as the lipid group in a lipoprotein
prosthetic group
prosthetic group, non-amino acid portions of certain proteinprotein,
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.
..... Click the link for more information. molecules. The key part of the prosthetic group may be either organic (such as a vitaminvitamin,
group of organic substances that are required in the diet of humans and animals for normal growth, maintenance of life, and normal reproduction. Vitamins act as catalysts; very often either the vitamins themselves are coenzymes, or they form integral parts of coenzymes.
..... Click the link for more information. ) or inorganic (such as a metal) and is usually required for biological activity, especially when the prosthetic group is complexed with an enzymeenzyme,
biological catalyst. The term enzyme comes from zymosis, the Greek word for fermentation, a process accomplished by yeast cells and long known to the brewing industry, which occupied the attention of many 19th-century chemists.
..... Click the link for more information. .Prosthetic Group an organic and nonprotein compound that forms a part of conjugated proteins. In enzymatic catalysis the prosthetic group is usually referred to as a coenzyme. Coenzymes are firmly bonded to the protein part of a biocatalyst by an apoenzyme and remain affixed to the protein molecule for the duration of the catalysis; examples of coenzymes include lipoic acid, riboflavin, biotin, and hemes. Carrier coenzymes differ from prosthetic groups. The activity of carrier coenzymes is associated with their transfer from one enzyme molecule to another. However, this differentiation is often arbitrary, since the same compound (for example, flavine-adenine dinucleotide) can sometimes act like a typical dissociating coenzyme, while at other times it remains firmly bonded to the protein. prosthetic group[präs′thed·ik ′grüp] (biochemistry) A characteristic nonamino acid substance that is strongly bound to a protein and necessary for the protein portion of an enzyme to function; often used to describe the function, as in hemeprotein for hemoglobin. prosthetic group
group [gro̳p] 1. an assemblage of objects having certain things in common.2. a number of atoms forming a recognizable and usually transferable portion of a molecule.activity g's groups of individuals with similar needs for occupational therapy who are working on the correction of problems that they hold in common.azo group the bivalent radical, -N=N-.blood group see blood group.control group see control (def. 3).Diagnosis-Related G's see diagnosis-related groups.encounter group a sensitivity group in which the members strive to gain emotional rather than intellectual insight, with emphasis on the expression of interpersonal feelings in the group situation.focus g's individuals with a common interest who meet to explore a problem in depth.PLT group [psittacosis-lymphogranuloma venereum-trachoma] alternative name for genus Chlamydia.prosthetic group 1. an organic radical, nonprotein in nature, which together with a protein carrier forms an enzyme.2. a cofactor tightly bound to an enzyme, i.e., it is an integral part of the enzyme and not readily dissociated from it.3. a cofactor that may reversibly dissociate from the protein component of an enzyme; a coenzyme.sensitivity group (sensitivity training group) a nonclinical group intended for persons without severe emotional problems, focusing on self-awareness, self-understanding, and interpersonal interactions and aiming to develop skills in leadership, management, counseling, or other roles. Called also T-group and training group.support group 1. a group made up of individuals with a common problem, usually meeting to express feelings, vent frustrations, and explore effective coping strategies. Education is a component of some support groups.2. in the nursing interventions classification, a intervention" >nursing intervention defined as the use of a group environment to provide emotional support and health-related information for members.support group (omaha) in the omaha system, regular planned gatherings to accomplish some compatible goal.T-group sensitivity group.group therapy a form of psychotherapy in which a group of patients meets regularly with a group leader, usually a therapist. The group may be balanced, having patients with diverse problems and attitudes, or it may be composed of patients who all have similar diagnoses or issues to resolve. In some groups, patients may be basically mentally healthy but trying to work through external stressors, such as job loss, natural disasters, or physical illness. Self-help groups are groups of people with a commonality of diagnosis (e.g., alcoholism, overeating, or a particular chronic physical illness) or of experience (e.g., rape, incest) and a leader who may be not a therapist but rather one who has experienced a similar problem or situation.
From hearing how the group leader or other members feel about this behavior, the patient may gain insight into his or her anxieties and conflicts. The group may provide emotional support for self-revelation and a structured environment for trying out new ways of relating to people. In contrast, there are other groups that focus on altering behavior, with less or minimal attention paid to gaining insight into the causes of the problems.therapy group in the nursing interventions classification, a intervention" >nursing intervention defined as the application of psychotherapeutic techniques to a group, including the utilization of interactions between members of the group. See also group therapy" >group therapy.training group sensitivity group.pros·thet·ic groupa nonamino acid compound attached to a protein, often in a reversible fashion, that confers new properties on the conjugated protein thus produced.
See also: coenzyme. prosthetic groupn. The nonprotein component of a conjugated protein, as the heme group in hemoglobin.pros·thet·ic group (pros-thet'ik grūp) A nonamino acid compound attached to a protein, often in a reversible fashion, which confers new properties on the conjugated protein thus produced.
See also: coenzymeprosthetic group a nonprotein group attached to a protein. Such prosthetic groups are usually vital for the functioning of the protein. For example, many enzymes contain metallic ions, as in carboxypeptidase which contains zinc; HAEMOGLOBIN contains HAEM with an iron atom at the centre.FinancialSeegroup |