TY - JOUR
T1 - Human sulfotransferases SULT1C1 and SULT1C2
T2 - cDNA characterization, gene cloning, and chromosomal localization
AU - Freimuth, Robert R.
AU - Raftogianis, Rebecca B.
AU - Wood, Thomas C.
AU - Moon, Eunpyo
AU - Kim, Ung Jin
AU - Xu, Jingping
AU - Siciliano, Michael J.
AU - Weinshilboum, Richard M.
N1 - Funding Information:
The authors thank Dr. Chengtao Her, Emily Aaronson, and Richard Hwang for their contributions to these studies, Drs. Eric Wieben and Frank Rusnak for their advice, and Luanne Wussow for her assistance with the preparation of this article. This research was supported in part by NIH RO1 Grants GM28157 (R.M.W.), GM35720 (R.M.W.), and CA34936 (M.J.S.), by DOE Grant DEFC03-97ER62299 (U.J.K.), and by the Research Facility Fund of Ajou University (E.M.).
PY - 2000/4/15
Y1 - 2000/4/15
N2 - Sulfate conjugation catalyzed by sulfotransferase (SULT) enzymes is an important pathway in the biotransformation of many drugs, other xenobiotics, neurotransmitters, and hormones. We previously described a human cDNA, SULT1C1, that encoded a protein similar in sequence to that of rat ST1C1. Subsequently, a related human cDNA, SULT1C2, was reported. In the present study, we set out to characterize further the human SULT1C1 cDNA and then to clone, structurally characterize, and map its gene. As an initial step, we performed 5'- and 3'-RACE with SULT1C1 cDNA. Those experiments demonstrated that a small number of SULTIC1 transcripts contained an 'insert,' which we later showed resulted from alternative splicing that involved an Alu sequence in intron 3 of SULT1C1. We then cloned and structurally characterized the SULT1C1 gene from a human genomic BAC library. Because the sequence of SULT1C2 was closely related to that of SULT1C1 and because the genes for other human SULT paralogues occur in clusters, we screened the BAC clones that had been positive for SULT1C1 to search for SULT1C2 and discovered a clone that contained both genes. That BAC was used to sequence and structurally characterize SULT1C2. SULT1C1 and SULT1C2 were approximately 21 and 10 kb in length, respectively. Both genes contained seven exons that encoded protein, and both had structures that were similar to those of other genes that encode members of the SULT1 family. Finally, human SULT1C1 and SULT1C2 mapped to 2q11.2 by fluorescence in situ hybridization. The cloning and structural characterization of SULT1C1 and SULT1C2 will now make it possible to perform molecular genetic and pharmacogenomic studies of these sulfate-conjugating enzymes in humans. (C) 2000 Academic Press.
AB - Sulfate conjugation catalyzed by sulfotransferase (SULT) enzymes is an important pathway in the biotransformation of many drugs, other xenobiotics, neurotransmitters, and hormones. We previously described a human cDNA, SULT1C1, that encoded a protein similar in sequence to that of rat ST1C1. Subsequently, a related human cDNA, SULT1C2, was reported. In the present study, we set out to characterize further the human SULT1C1 cDNA and then to clone, structurally characterize, and map its gene. As an initial step, we performed 5'- and 3'-RACE with SULT1C1 cDNA. Those experiments demonstrated that a small number of SULTIC1 transcripts contained an 'insert,' which we later showed resulted from alternative splicing that involved an Alu sequence in intron 3 of SULT1C1. We then cloned and structurally characterized the SULT1C1 gene from a human genomic BAC library. Because the sequence of SULT1C2 was closely related to that of SULT1C1 and because the genes for other human SULT paralogues occur in clusters, we screened the BAC clones that had been positive for SULT1C1 to search for SULT1C2 and discovered a clone that contained both genes. That BAC was used to sequence and structurally characterize SULT1C2. SULT1C1 and SULT1C2 were approximately 21 and 10 kb in length, respectively. Both genes contained seven exons that encoded protein, and both had structures that were similar to those of other genes that encode members of the SULT1 family. Finally, human SULT1C1 and SULT1C2 mapped to 2q11.2 by fluorescence in situ hybridization. The cloning and structural characterization of SULT1C1 and SULT1C2 will now make it possible to perform molecular genetic and pharmacogenomic studies of these sulfate-conjugating enzymes in humans. (C) 2000 Academic Press.
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U2 - 10.1006/geno.2000.6150
DO - 10.1006/geno.2000.6150
M3 - Article
C2 - 10783263
AN - SCOPUS:0034656291
SN - 0888-7543
VL - 65
SP - 157
EP - 165
JO - Genomics
JF - Genomics
IS - 2
ER -