TY - JOUR
T1 - Nucleotide sequence of cloned cDNAs encoding chicken preproparathyroid hormone
AU - Khosla, Sundeep
AU - Demay, Marie
AU - Pines, Mark
AU - Hurwitz, Shmuel
AU - Potts, John T.
AU - Kronenberg, Henry M.
PY - 1988/12
Y1 - 1988/12
N2 - In order to characterize an avian parathyroid hormone gene, a λgt10 cDNA library constructed from chicken parathyroid gland mRNA was screened with a human preproparathyroid hormone (preproPTH) cDNA probe. Nucleotide sequence analysis of three independent clones confirmed that they encoded chicken preproPTH. This analysis, complemented by primer extension and Northern blot analysis of mRNA, demonstrated a 5′‐untranslated region for chicken preproPTH of 127 nucleotides, a coding region of 357 nucleotides, and a 3′‐untranslated region of approximately 2500 nucleotides. The coding sequence predicts a mature chicken PTH of 88 amino acids in contrast to the 84 amino acids of the mammalian hormones. Comparison of the avian and the mammalian hormones shows striking homology in the region of amino acids 1–32. The middle and carboxyl‐terminal portions of chicken PTH, however, differ considerably from the mammalian hormones and include deletions of sequences conserved in mammalian PTH and insertions of novel peptide sequences. Comparison of the avian and mammalian structures suggests potential alterations of the mammalian sequences that may lead to altered bioactivity and/or hormone metabolism.
AB - In order to characterize an avian parathyroid hormone gene, a λgt10 cDNA library constructed from chicken parathyroid gland mRNA was screened with a human preproparathyroid hormone (preproPTH) cDNA probe. Nucleotide sequence analysis of three independent clones confirmed that they encoded chicken preproPTH. This analysis, complemented by primer extension and Northern blot analysis of mRNA, demonstrated a 5′‐untranslated region for chicken preproPTH of 127 nucleotides, a coding region of 357 nucleotides, and a 3′‐untranslated region of approximately 2500 nucleotides. The coding sequence predicts a mature chicken PTH of 88 amino acids in contrast to the 84 amino acids of the mammalian hormones. Comparison of the avian and the mammalian hormones shows striking homology in the region of amino acids 1–32. The middle and carboxyl‐terminal portions of chicken PTH, however, differ considerably from the mammalian hormones and include deletions of sequences conserved in mammalian PTH and insertions of novel peptide sequences. Comparison of the avian and mammalian structures suggests potential alterations of the mammalian sequences that may lead to altered bioactivity and/or hormone metabolism.
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U2 - 10.1002/jbmr.5650030615
DO - 10.1002/jbmr.5650030615
M3 - Article
C2 - 3251402
AN - SCOPUS:0024243137
SN - 0884-0431
VL - 3
SP - 689
EP - 698
JO - Journal of Bone and Mineral Research
JF - Journal of Bone and Mineral Research
IS - 6
ER -