Proteins and insulin release.
نویسندگان
چکیده
منابع مشابه
Insulin and Other Proteins
The normal modes have been calculated for structures having the dihedral angles of the four @-turns of insulin. Frequencies are predicted in the amide I region near 1652 and 1680 cm-’. The former overlaps the a-helix band at 1658 cm-l in the Raman spectrum, while the latter accounts for the hitherto unassignable band a t 1681 cm-’. Calculated amide I11 frequencies extend above 1300 cm-I, provid...
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Guanine nucleotide-binding proteins (G-proteins) are known to act as important modulators of insulin release from the islets of Langerhans. We have recently found that the deoxynojirimycin-derivative emiglitate, a recognized inhibitor of intestinal alpha-glucosidehydrolase activity, is a powerful inhibitor of glucose-induced insulin release. With the use of isolated mouse islets the present inv...
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Norepinephrine has for many years been known to have three major effects on the pancreatic β-cell which lead to the inhibition of insulin release. These are activation of K(+) channels to hyperpolarize the cell and prevent the gating of voltage-dependent Ca(2+) channels that increase intracellular Ca(2+) concentration ([Ca(2+)](i)) and trigger release; inhibition of adenylyl cyclases, thus prev...
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Objective(s): Soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complex proteins are involved in membrane trafficking. The expression of isoforms of SNAP-23, syntaxin-4, and VAMP-2 is significantly done in skeletal muscles; they control GLUT4 trafficking. It is believed that type 2 diabetes could be caused by the modifications in the express...
متن کاملCalcium release channel RyR2 regulates insulin release and glucose homeostasis.
The type 2 ryanodine receptor (RyR2) is a Ca2+ release channel on the endoplasmic reticulum (ER) of several types of cells, including cardiomyocytes and pancreatic β cells. In cardiomyocytes, RyR2-dependent Ca2+ release is critical for excitation-contraction coupling; however, a functional role for RyR2 in β cell insulin secretion and diabetes mellitus remains controversial. Here, we took advan...
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ژورنال
عنوان ژورنال: BMJ
سال: 1970
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.1.5693.434-b