apoprotein

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Related to Apoproteins: lipoprotein lipase

apoprotein

 [ap″o-pro´tēn]
the protein portion of a molecule or complex consisting of a protein molecule joined to a nonprotein protein molecule or molecules (such as a lipoprotein).

ap·o·pro·tein

(ap'ō-prō'tēn),
A polypeptide chain (protein) that has not yet formed a complex with the prosthetic group required to form the active holoprotein.

apoprotein

The protein part of a biomolecular complex without its ligand or prothetic group (e.g., ferritin without ferric hydroxide = apoferritin).

ap·o·pro·tein

(ap'ō-prō'tēn)
A polypeptide chain (protein) not yet complexed with the prosthetic group that is necessary to form the active holoprotein.
References in periodicals archive ?
In the exogenous pathway, lipoprotein lipase (LPL), held on the vascular endothelium by heparan sulphate proteoglycans (HSPGs), hydrolyses triglycerides (in the presence of apoprotein C2 (apo C2)), releasing FAs and CM-remnants in the process.
The maximum absorbance of the 2 retinals is very similar when the apoprotein is not present: 380 nm for all-trans retinal and 379 nm for 11-cis retinal in ethanol.
Four large (several hundred in each group), prospective randomized clinical trials comparing Exosurf (synthetic, no apoproteins) to Survanta (beractant) and to Infasurf (calfactant) have been conducted.
The free fatty acids (FFA) can travel joined with albumin, however, phospholipids, cholesterol, and triglycerydes, are combined with apoproteins to produce soluble macromolecules denominated lipoproteins (1).
The maturation of HD[L.sub.3] to HD[L.sub.2] results from the transfer of phospholipids, free cholesterol, and apoproteins, released from the lipolyzed VLDLs, to the HDL particle (Eisenberg 1984).
All lipoproteins contain cholesterol, phospholipids, triglycerides, and apoproteins to maintain structural integrity.
The sticking point is that when carrier molecules, called apoproteins, combine with non-water-soluble cholesterol (meaning it doesn't dissolve in blood), they form lipoproteins.
Mouse monoclonal antibodies directed against the following components were used: HMB-45, which recognizes gp100[23] and serves as a marker for epithelioid LAM cells[11] (Dako; dilution, 1:200); PCNA (Dako; dilution, 1:100), which is localized in the smaller, spindle-shaped LAM cells[8,13]; PE-10 (Dako; dilution, 1:200), which reacts with the surfactant apoprotein A found in type II pneumocytes[24]; and TTF-1 (Neomarkers, Inc, Union City, Calif; dilution, 1:75), which identifies a nuclear transcription factor for surfactant apoproteins A and B and is present in the nuclei of type II pneumocytes.[25,26] Rabbit polyclonal antibodies included the following: MMP-2 (dilution, 1: 1000), which labels most LAM cells of both types and was prepared by Dr W.
Characteristics of the 50 patients with gallstones in situ Men Women Total(%) Positive family history 3 6 9 (18) Specific symptoms 2 9 11 (22) Awareness of the condition 3 9 12 (24) Table III shows the mean [positive or negative] SD serum values of cholesterol, triglycerides, HDL-cholesterol and A-1 and B apoproteins in the patients with BL compared with the rest of the elderly subjects not suffering from BL.
Among the classic risk factors for coronary artery disease are elevated blood levels of cholesterol (in low-density and very-low-density lipoproteins), triglycerides, certain apoproteins), triglycerides, certain apoproteins and uric acid.