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Genomics. 1997 Jul 15;43(2):191-201.

Three genes encoding zinc finger proteins on human chromosome 6p21.3: members of a new subclass of the Kruppel gene family containing the conserved SCAN box domain.

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Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California 92037, USA.


Five genes encoding zinc finger proteins of the Cys2His2 (or Krüppel) family were identified by direct cDNA hybridization to YACs 753H12 and 638D7, which encompass a region of human chromosome 6p21.3 extending from just centromeric of the microsatellite marker D6S306 to telomeric of D6S1260. The genes span a distance of approximately 1750 kb. The complete cDNA sequence, genomic structure, and tissue distribution of three of the zinc finger proteins, LD65/ZNF165, ZNF192 (previously called LD5-1), and ZNF193, are described. The three zinc finger proteins do not contain either Krüppel-associated box (KRAB) A or KRAB B domain, present in about one-third of all Krüppel-type zinc finger proteins (E. J. Bellefroid et al., 1991, Proc. Natl. Acad. Sci. USA 88: 3608-3612). The three zinc finger proteins do contain the conserved SCAN box domain (A. J. Williams et al., 1995, J. Biol. Chem. 270: 22143-22152). SCAN boxes are found in eight other genes in the GenBank database, five of which are also in the Kruppel family of zinc finger proteins lacking KRAB A and B domains and thereby define a new subclass of zinc finger proteins. In addition, three polymorphisms were identified in ZNF192, one of the zinc finger proteins. One of the three polymorphisms, Pro163Leu, is the second proline in a proline cluster (PEPP) in a region separating the SCAN box from the zinc finger motifs.

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