| prosthetic group | A tightly bound nonpolypeptide structure required for the activity of an enzyme or other protein, for example the haem of haemoglobin. (18 Nov 1997) |
|---|---|
| high-mobility group protein | <protein> An HMG protein is one of a group of various different proteins which are somehow involved with chromatin, but which are not histones and whose exact function is not known. (09 Oct 1997) |
| high mobility group proteins | Family of small, nonhistone, nuclear proteins. Some appear to be involved in controlling transcription. (18 Nov 1997) |
| histo-blood group B transferase | <enzyme> Catalyses transfer of galactose from udp-galactose to glycoproteins and glycolipids; differs from a transferase by four amino acid residues Registry number: EC 2.4.1.- Synonym: b transferase, histo-blood group (26 Jun 1999) |
| psychotherapy, group | A form of therapy in which two or more patients participate under the guidance of one or more psychotherapists for the purpose of treating emotional disturbances, social maladjustments, and psychotic states. (12 Dec 1998) |
| hordeivirus group | A group of plant viruses which primarily infect wheat, oats, and barley. They are rigid and rod-shaped, and are transmitted by seed and mechanically. (09 Oct 1997) |
| sensitivity training group | A group in which members seek to develop self-awareness and an understanding of group processes rather than to obtain therapy for an emotional disturbance. See: encounter group, personal growth laboratory. (05 Mar 2000) |
| hospitals, group practice | Hospitals organised and controlled by a group of physicians who practice together and provide each other with mutual support. (12 Dec 1998) |
| hydrophilic group | <chemistry> A polar group or one that can take part in hydrogen bond formation, for example OH, COOH, NH2. Confers water solubility or in lipids and macromolecules causes part of the structure to make close contact with the aqueous phase. (18 Nov 1997) |
| hydroxyl group | An -OH or alcohol group on a larger molecule. The oxygen is single-bonded to the hydrogen and has one free bond to the rest of the molecule. Molecules with one or more hydroxyl groups are called alcohols. (09 Oct 1997) |
| simbu group viruses | A group of viruses in the bunyavirus genus of the bunyaviridae family that are found in asia, africa, and the americas. (12 Dec 1998) |
| sodium group | The alkali metals: cesium, lithium, potassium, rubidium, and sodium. (05 Mar 2000) |
| species group | <zoology> The taxonomic categories species and subspecies. (09 Jan 1998) |
| nitrogen group | Five trivalent or quinquivalent elements whose hydrogen compounds are basic and whose oxyacids vary from monobasic to tetrabasic: nitrogen, phosphorus, arsenic, antimony, and bismuth. (05 Mar 2000) |
| nitrogenous group transferases | <enzyme> Enzymes that catalyze the transfer of nitrogenous groups, primarily amino groups, from a donor, generally an amino acid, to an acceptor, usually a 2-oxoacid. Registry number: EC 2.6 (12 Dec 1998) |