Iodocalcitonin binds to human calcitonin receptors with higher affinity than calcitonin.
نویسندگان
چکیده
منابع مشابه
Human placental calcitonin receptors.
Receptors for the hypocalcaemic hormone, calcitonin (CT), have been identified in a membrane fraction prepared from term human placentae. Binding of 125I-labelled salmon CT (125I-sCT) to the membranes was time- and temperature-dependent, saturable (Bmax. 58 +/- 11 fmol/mg of protein), of high affinity (Kd 80 +/- 21 pM) and poorly reversible. Species-specific CTs and CT analogues competed for 12...
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Calcitonin (CT) is a polypeptide hormone with 32 aminoacids syntetized primarily by the thyroid. Several evidences support the existence of nonthyroidal CT like peptide. The CT gene transcript also encodes a distinct peptide known as calcitonin gene related peptide (CGRP) which is a potent vasodilator and responsible for the stimulation of the glomerular filtration rate. In addition, a 37 amino...
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Established human lymphoid cell lines bound calcitonin with high affinity. Calcitonin binding was detectable on both B cell and T cell lines derived from patients with a spectrum of lymphoproliferative disorders. These cell lines had marked differences in binding capacity per cell even when adjusted for differences in surface area. The binding was linearly related to cell density and showed a c...
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Calcitonin (CT) binding activity has been extracted from a membrane fraction of human placenta using the zwitterionic detergent, 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulphonic acid (Chaps). Approximately two-thirds of the available binding sites were extracted using 5 mM-Chaps. The binding characteristics of 125I-labelled salmon CT(125I-sCT) to the solubilized extract were similar to...
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This study investigates the poor reversibility of salmon calcitonin (sCT) binding to rat and human calcitonin receptors. Efficacy of CT and analogue peptides in (125)I-sCT binding competition and cAMP assays was compared with the dissociation kinetics of (125)I-labelled peptides. Assessment was performed on cells stably expressing either rat or human calcitonin receptors. Dissociation kinetics ...
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ژورنال
عنوان ژورنال: Endocrinology
سال: 1996
ISSN: 0013-7227,1945-7170
DOI: 10.1210/endo.137.10.8828514