| myelin proteins | Proteins found in the myelin sheath. The major proteins of central nervous system myelin include: myelin proteolipid protein, myelin basic proteins, and myelin-associated glycoprotein. The major proteins of peripheral nervous system myelin include: myelin basic proteins (myelin p1 protein and myelin p2 protein), myelin p0 protein, and myelin-associated glycoprotein. (12 Dec 1998) |
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| pregnancy proteins | Proteins produced by organs of the mother or the placenta during pregnancy. They may be either pregnancy specific (present only during pregnancy) or pregnancy associated (always present during pregnancy, but may also be present in individuals undergoing oestrogen therapy, taking oral contraceptives or in patients with certain malignancies.) (12 Dec 1998) |
| pregnancy zone proteins | Glycoproteins with the electrophoretic mobility of an alpha 2-globulin. They are found in small amounts in normal human plasma but in much larger volume in the plasma of pregnant women. These proteins have also been found in increased amounts in individuals undergoing oestrogen therapy and are sometimes produced ectopically by tumours of non-placental origin. Pregnancy zone proteins are believed to be of maternal rather than placental origin. (12 Dec 1998) |
| cytoskeletal proteins | Major constituent of the cytoskeleton found in the cytoplasm of eukaryotic cells. They form a flexible framework for the cell, provide attachment points for organelles and formed bodies, and make communication between parts of the cell possible. (12 Dec 1998) |
| heat-shock proteins 70 | <cell biology, protein> A class of molecular chaperones found in both prokaryotes and in several compartments of eukaryotic cells. There is evidence that these proteins can interact with polypeptides during a variety of assembly processes in such a way as to prevent the formation of nonfunctional structures. (12 Dec 1998) |
| heat-shock proteins 90 | <cell biology, protein> A class of molecular chaperones whose members act in the mechanism of signal transduction by steroid receptors. (12 Dec 1998) |
| salivary proteins | Proteins found in saliva and the salivary glands. These proteins show some enzymatic activity, but their composition varies in different individuals. (12 Dec 1998) |
| helminth proteins | Proteins found in any species of helminth. (12 Dec 1998) |
| scaffold proteins | Proteins that remain when chromosomes are digested with DNase. Many antigenic species have been identified. (18 Nov 1997) |
| proteins | Nitrogenous organic compounds, containing more than about 100 amino acid residues, molecular weight 8,000-200,000, in vegetable and animal matter. Proteins yield amino acids on hydrolysis and are foods assimilated as amino acids and reconstructed in the protoplasm. (12 Dec 1998) |
| protozoan proteins | Proteins found in any species of protozoan. (12 Dec 1998) |
| prpc proteins | Normal cellular isoform of prion proteins (prions) encoded by a chromosomal gene and found in normal and scrapie-infected brain tissue, and other normal tissue. Prpc are protease-sensitive proteins whose function is unknown. Posttranslational modification of prpc into prpsc leads to infectivity. (12 Dec 1998) |
| prpsc proteins | Abnormal isoform of prion proteins (prions) resulting from a posttranslational modification of the cellular prion protein (prpc proteins). Prpsc are disease-specific proteins seen in certain human and animal neurodegenerative diseases (prion diseases). (12 Dec 1998) |
| high mobility group proteins | Family of small, nonhistone, nuclear proteins. Some appear to be involved in controlling transcription. (18 Nov 1997) |
| homeodomain proteins | Proteins encoded by homeobox genes (genes, homeobox) that exhibit structural similarity to certain prokaryotic and eukaryotic DNA-binding proteins. Homeodomain proteins are involved in the control of gene expression during morphogenesis and development (gene expression regulation, developmental). (12 Dec 1998) |