PMID- 1646158 OWN - NLM STAT- MEDLINE DCOM- 19910718 LR - 20190902 IS - 0888-7543 (Print) IS - 0888-7543 (Linking) VI - 10 IP - 1 DP - 1991 May TI - The human connexin gene family of gap junction proteins: distinct chromosomal locations but similar structures. PG - 250-6 AB - Connexins are protein subunits that constitute gap junction channels. Two members of this gene family, connexin43 (Cx43) and connexin32 (Cx32), are abundantly expressed in the heart and liver, respectively. Human genomic DNA analysis revealed the presence of two loci for Cx43: an expressed gene and a processed pseudogene. The expressed gene (GJA1) was mapped to human chromosome 6 and the pseudogene (GJA1P) to chromosome 5. To determine whether Cx32 was linked to Cx43, somatic cell hybrids were analyzed by polymerase chain reaction and hybridization, resulting in the assignment of the gene for Cx32 (GJB1) to the X chromosome at Xp11----q22. Comparison of the structures of connexin genes suggests that members of this multigene family arose from a single precursor, but evolved to distinct chromosomal locations. FAU - Fishman, G I AU - Fishman GI AD - Department of Medicine, Albert Einstein College of Medicine, Bronx, New York 10461. FAU - Eddy, R L AU - Eddy RL FAU - Shows, T B AU - Shows TB FAU - Rosenthal, L AU - Rosenthal L FAU - Leinwand, L A AU - Leinwand LA LA - eng SI - GENBANK/M65188 SI - GENBANK/M65189 SI - GENBANK/M65276 SI - GENBANK/M65277 SI - GENBANK/M65278 SI - GENBANK/M65279 SI - GENBANK/M65280 SI - GENBANK/M65281 SI - GENBANK/M65282 SI - GENBANK/M65283 GR - 1K11HL02391/HL/NHLBI NIH HHS/United States GR - HG00333/HG/NHGRI NIH HHS/United States GR - HL37412/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Genomics JT - Genomics JID - 8800135 RN - 0 (Connexins) RN - 0 (Membrane Proteins) RN - 9007-49-2 (DNA) SB - IM GS - GJA1 GS - GJA1P GS - GJB1 MH - Base Sequence MH - Blotting, Southern MH - *Chromosomes, Human, Pair 5 MH - *Chromosomes, Human, Pair 6 MH - Connexins MH - DNA MH - Genetic Linkage MH - Humans MH - Membrane Proteins/*genetics MH - Molecular Sequence Data MH - *Multigene Family MH - Polymerase Chain Reaction MH - Pseudogenes MH - Restriction Mapping MH - *X Chromosome EDAT- 1991/05/01 00:00 MHDA- 1991/05/01 00:01 CRDT- 1991/05/01 00:00 PHST- 1991/05/01 00:00 [pubmed] PHST- 1991/05/01 00:01 [medline] PHST- 1991/05/01 00:00 [entrez] AID - 0888-7543(91)90507-B [pii] AID - 10.1016/0888-7543(91)90507-b [doi] PST - ppublish SO - Genomics. 1991 May;10(1):250-6. doi: 10.1016/0888-7543(91)90507-b.