| vegetable proteins | Proteins which are present in or isolated from vegetables or vegetable products used as food. The concept is distinguished from plant proteins which refers to non-dietary proteins from plants. (12 Dec 1998) |
|---|---|
| ras proteins | Small GTP-binding proteins encoded by ras genes (genes, ras) that play a critical role in normal cellular growth, differentiation, and development, and have the potential for malignant transformation. Two of the major ras proteins include the normal cellular form, proto-oncogene protein p21(ras), and the malignant form, oncogene protein p21(ras). (12 Dec 1998) |
| recombinant fusion proteins | Proteins that are the result of genetic engineering. A regulatory part or promoter of one or more genes is combined with a structural gene. The fusion protein is formed after transcription and translation of the fused gene. This type of fusion protein is used in the study of gene regulation or structure-activity relationships. They might also be used clinically as targeted toxins (immunotoxins). (12 Dec 1998) |
| recombinant proteins | Proteins prepared by recombinant DNA technology. (12 Dec 1998) |
| carrier proteins | Transport proteins that carry specific substances in the blood or across cell membranes. (12 Dec 1998) |
| matrix proteins | Proteins of the outer layer of the cell wall of gram-negative bacteria. (18 Nov 1997) |
| cell cycle proteins | Proteins that control the cell division cycle. This family of proteins includes a wide variety of classes, including cyclin-dependent kinases, mitogen-activated kinases, cyclins, and phosphoprotein phosphatases (phosphoprotein phosphatase) as well as their putative substrates such as chromatin-associated proteins, cytoskeletal proteins, and transcription factors. (12 Dec 1998) |
| glue proteins, drosophila | Glycosylated proteins which are part of the salivary glue that drosophila larvae secrete as a means of fixing themselves to an external substrate for the duration of the pre-pupal and pupal period. The proteins which consist of at least eight polypeptides are encoded in the third larval instar by the sgs-3, sgs-4, sgs-7 and sgs-8 genes. (12 Dec 1998) |
| repressor proteins | Proteins which are normally bound to the operator locus of an operon, thereby preventing transcription of the structural genes. In enzyme induction, the substrate of the inducible enzyme binds to the repressor protein, causing its release from the operator and freeing the structural genes for transcription. In enzyme repression, the end product of the enzyme sequence binds to the free repressor protein, the resulting complex then binds to the operator and prevents transcription of the structural genes. (12 Dec 1998) |
| cerebrospinal fluid proteins | Proteins in the cerebrospinal fluid, normally albumin and globulin present in the ratio of 8 to 1. Increases in protein levels are of diagnostic value in neurological diseases. (brain and bannister's clinical neurology, 7th ed, p221) (12 Dec 1998) |
| membrane proteins | Proteins which are found in membranes including cellular and intracellular membranes. They consist of two types, peripheral and integral proteins. They include most membrane-associated enzymes, antigenic proteins, transport proteins, and drug, hormone, and lectin receptors. (12 Dec 1998) |
| retroviridae proteins | Proteins from the family retroviridae. The most frequently encountered member of this family is the rous sarcoma virus protein. (12 Dec 1998) |
| retroviridae proteins, oncogenic | Retroviral proteins that have the ability to transform cells. They can induce sarcomas, leukaemias, lymphomas, and mammary carcinomas. Not all retroviral proteins are oncogenic. (12 Dec 1998) |
| chimeric proteins | Proteins in individuals that are derived from genetically different zygotes. (12 Dec 1998) |
| peripheral proteins | Pathways that can be easily removed from a biomembrane (e.g., by altering the pH or the ionic strength). Synonym: extrinsic proteins. (05 Mar 2000) |