PMID- 7590286 OWN - NLM STAT- MEDLINE DCOM- 19951130 LR - 20190707 IS - 0378-1119 (Print) IS - 0378-1119 (Linking) VI - 163 IP - 2 DP - 1995 Oct 3 TI - Human peptidylglycine alpha-amidating monooxygenase transcripts derived by alternative mRNA splicing of an unreported exon. PG - 307-11 AB - We are characterizing the alternatively spliced human peptidylglycine alpha-amidating monooxygenase (hPAM)-encoding mRNA transcripts expressed by human cells. Reverse transcription coupled to the polymerase chain reaction (RT-PCR) has been used to identify four alternatively spliced variants that differ in the region joining the two catalytic domains. Two of the transcripts represent previously reported splice variants differentiated by the presence (hPAM-A) or absence (hPAM-B) of a 321-nucleotide (nt) linker (optional exon A) which in the rat produce functionally distinct enzymes. Different mRNAs represent two splice variants, hPAM-C and hPAM-D, that show the presence of an exon unreported for PAM in any other species. This new exon, designated exon C, is 54 nt in length, encodes an 18-amino-acid (aa) peptide containing a conserved dibasic aa endoproteolytic processing motif, and is located 3' of exon A in human genomic DNA. We propose that cell-specific regulation of mRNA splicing would provide a mechanism for control of prohormone activation by these variants of the PAM enzyme. FAU - Vos, M D AU - Vos MD AD - Intervention Section, National Cancer Institute Division of Cancer Prevention and Control, Rockville, MD 20850-3300, USA. FAU - Jones, J E AU - Jones JE FAU - Treston, A M AU - Treston AM LA - eng SI - GENBANK/U20089 SI - GENBANK/U20090 PT - Journal Article PL - Netherlands TA - Gene JT - Gene JID - 7706761 RN - 0 (Multienzyme Complexes) RN - 0 (RNA, Messenger) RN - EC 1.- (Mixed Function Oxygenases) RN - EC 1.14.17.3 (peptidylglycine monooxygenase) SB - IM MH - Alternative Splicing MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - Cloning, Molecular MH - Exons/genetics MH - Humans MH - Mixed Function Oxygenases/biosynthesis/*genetics MH - Molecular Sequence Data MH - *Multienzyme Complexes MH - RNA, Messenger/genetics MH - Rats EDAT- 1995/10/03 00:00 MHDA- 1995/10/03 00:01 CRDT- 1995/10/03 00:00 PHST- 1995/10/03 00:00 [pubmed] PHST- 1995/10/03 00:01 [medline] PHST- 1995/10/03 00:00 [entrez] AID - 0378-1119(95)00364-C [pii] AID - 10.1016/0378-1119(95)00364-c [doi] PST - ppublish SO - Gene. 1995 Oct 3;163(2):307-11. doi: 10.1016/0378-1119(95)00364-c.