Complete cDNA Sequence of the Preproform of Human Pregnancy‐Associated Plasma Protein‐A
Open Access
- 1 April 1996
- journal article
- Published by Wiley in European Journal of Biochemistry
- Vol. 237 (1) , 159-163
- https://doi.org/10.1111/j.1432-1033.1996.0159n.x
Abstract
A cDNA that encodes the prepropeptide of pregnancy‐associated plasma protein‐A (preproPAPP‐A), a putative metalloproteinase, has been cloned and sequenced. PAPP‐A is synthesized in the placenta as a 1627‐residue precursor preproprotein with a putative 22‐residue signal peptide and a highly basic propeptide of 58 residues. The preproPAPP‐A–encoding transcript contains a region with an extremely high G+C content and has an unusually long 5′ untranslated region with several upstream short ORF. No alternatively spliced products could be identified by means of Northern blotting experiments or with rapid amplification of 5′ cDNA ends experiments. A stretch within the 5′ untranslated region shows sequence identities to a partial cDNA isolated from brain and a to cAMP‐inducible sequence from a choriocarcinoma cell line.Keywords
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