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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1996-6-21
pubmed:databankReference
pubmed:abstractText
The Sex comb on midleg (Scm) gene is a member of the Polycomb group (PcG) of genes in Drosophila melanogaster. The PcG genes encode transcriptional repressors required for proper spatial expression of homeotic genes. We report the isolation of new Scm mutations and the molecular characterization of the Scm gene. Scm mRNA is expressed maternally, at peak levels in early embryos and then at lower levels throughout the remainder of development. Scm encodes a putative zinc finger protein of 877 amino acids. Scm protein is similar to polyhomeotic, another member of the PcG, both in the zinc finger region and in a separate C-terminal domain of 60 amino acids, which we term the SPM domain. Sequence analysis of an Scm mutant allele suggests a functional requirement for the SPM domain. Scm protein also bears homology in multiple domains to a mouse protein, Rae-28 (Nomura, M., Takihara, Y. and Shimada, K. (1994) Differentiation 57,39-50) and to a fly tumor suppressor protein, the product of the lethal(3)malignant brain tumor gene (Wismar, J. et al., (1995) Mech. Dev. 53, 141-154). Possible functional relationships among these proteins and potential biochemical roles for Scm protein in PcG repression are discussed.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0950-1991
pubmed:author
pubmed:issnType
Print
pubmed:volume
122
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1621-30
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
The Drosophila Polycomb group gene Sex comb on midleg (Scm) encodes a zinc finger protein with similarity to polyhomeotic protein.
pubmed:affiliation
Department of Biochemistry, University of Minnesota, St. Paul 55108, USA.
pubmed:publicationType
Journal Article