PMID- 10448092 OWN - NLM STAT- MEDLINE DCOM- 19990923 LR - 20091119 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 262 IP - 1 DP - 1999 Aug 19 TI - The DNA-binding and transcriptional activities of MAZ, a myc-associated zinc finger protein, are regulated by casein kinase II. PG - 198-205 AB - Myc-associated zinc finger protein (MAZ) is a transcription factor that contains proline-rich, alanine repeats and six C(2)H(2)-type zinc finger motifs, as well as five putative sites of phosphorylation by casein kinase II (CKII). Site-specific mutagenesis of MAZ revealed that the serine residue at position 480 was the major site of phosphorylation by CKII both in vitro and in vivo. Phosphorylation of MAZ by CKII at this serine residue was required for maximum binding of MAZ to the pyrimidine-rich DNA of the nuclease-hypersensitive element (NHE) in the 5'-end promoter region of the c-myc gene. Mutation of serine at position 480 to alanine eliminated the DNA-binding activity of MAZ to this element. Moreover, the mutated MAZ was unable to enhance the expression of luciferase encoded by a c-myc promoter/luciferase reporter gene in HeLa cells in the presence of CKII. These results suggest that phosphorylation of the serine residue at position 480 of MAZ by CKII can control the function of MAZ by altering its DNA-binding activity. CI - Copyright 1999 Academic Press. FAU - Tsutsui, H AU - Tsutsui H AD - Tsukuba Life Science Center, RIKEN (The Institute of Physical and Chemical Research), 3-1-1 Koyadai, Tsukuba, Ibaraki, 305-0074, Japan. FAU - Geltinger, C AU - Geltinger C FAU - Murata, T AU - Murata T FAU - Itakura, K AU - Itakura K FAU - Wada, T AU - Wada T FAU - Handa, H AU - Handa H FAU - Yokoyama, K K AU - Yokoyama KK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (DNA-Binding Proteins) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Transcription Factors) RN - 0 (c-MYC-associated zinc finger protein) RN - 17885-08-4 (Phosphoserine) RN - 9007-49-2 (DNA) RN - EC 2.7.11.1 (Casein Kinase II) RN - EC 2.7.11.1 (Protein-Serine-Threonine Kinases) SB - IM MH - Amino Acid Substitution MH - Casein Kinase II MH - Cell Nucleus/metabolism MH - DNA/genetics/metabolism MH - DNA-Binding Proteins/chemistry/genetics/*metabolism MH - *Gene Expression Regulation MH - Genes, Reporter MH - Genes, myc/genetics MH - HeLa Cells MH - Humans MH - Phosphorylation MH - Phosphoserine/metabolism MH - Promoter Regions, Genetic/genetics MH - Protein-Serine-Threonine Kinases/*metabolism MH - Recombinant Fusion Proteins/chemistry/genetics/metabolism MH - Response Elements/genetics MH - Transcription Factors/chemistry/genetics/*metabolism MH - Transfection EDAT- 1999/08/17 00:00 MHDA- 1999/08/17 00:01 CRDT- 1999/08/17 00:00 PHST- 1999/08/17 00:00 [pubmed] PHST- 1999/08/17 00:01 [medline] PHST- 1999/08/17 00:00 [entrez] AID - 10.1006/bbrc.1999.1130 [doi] AID - S0006-291X(99)91130-0 [pii] PST - ppublish SO - Biochem Biophys Res Commun. 1999 Aug 19;262(1):198-205. doi: 10.1006/bbrc.1999.1130.