calcitonin gene-related peptide 1; alpha-type CGRP; calcitonin gene-related peptide I; CGRP-I (CALCA, CALC1)
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Function
- induces vasodilation
- it dilates a variety of vessels including the coronary arteries, cerebral arteries & systemic vasculature
- abundance in the CNS suggests a neurotransmitter or neuromodulator role
- elevates platelet cAMP
Structure
- belongs to the calcitonin familyStructure:
- alpha-CGRP differs from beta-CGRP (CALCB) by single amino acid
Compartment
Alternative splicing
- named isoforms=3
- at least one iform may be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay
Genetics
- encoded by a gene separate from CALCB