HGNC Approved Gene Symbol: ZNF257
Cytogenetic location: 19p12 Genomic coordinates (GRCh38) : 19:22,052,484-22,091,480 (from NCBI)
Using PCR primers based on conserved sequences of Kruppel-like genes to screen a bone marrow cDNA library, followed by database searching and 3-prime and 5-prime RACE, Han et al. (1999) isolated cDNAs encoding several zinc finger proteins, ZNF257. The deduced 535-amino acid ZNF257 protein contains 4 tandemly repeated C-terminal zinc finger motifs with interspersed conserved knuckle sequences, as well as an N-terminal Kruppel-associated box (KRAB). In the hematopoietic system, RT-PCR analysis detected selective expression restricted to myelomonocytic cell lines.
Using FISH, Han et al. (1999) mapped the ZNF257 gene to chromosome 19q13, where the ZNF253 (606954) and ZNF254 (604768) genes also map.
Han, Z.-G., Zhang, Q.-H., Ye, M., Kan, L.-X., Gu, B.-W., He, K.-L., Shi, S.-L., Zhou, J., Fu, G., Mao, M., Chen, S.-J., Yu, L., Chen, Z. Molecular cloning of six novel Kruppel-like zinc finger genes from hematopoietic cells and identification of a novel transregulatory domain KRNB. J. Biol. Chem. 274: 35741-35748, 1999. [PubMed: 10585455] [Full Text: https://doi.org/10.1074/jbc.274.50.35741]