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Title: Fine structure mapping and deletion analysis of the murine piebald locus

Abstract

Piebald (s) is a recessive mutation that affects the development of two cell types of neural crest origin: melanocytes, responsible for pigment synthesis in the skin, and enteric ganglia, which innervate the lower bowel. As a result, mice carrying piebald mutations exhibit white spotting in the coat and aganglionic megacolon. Previously the gene had been localized to the distal half of mouse chromosome 14. To determine its precise location relative to molecular markers, an intersubspecific backcross was generated. Two anchor loci of chromosome 14, slaty and hypogonadal, in addition to simple sequence length repeat markers, were used to localize s to a 2-cM interval defined by the markers D14Mit38 and D14Mit42. The molecular markers were also used to characterize nine induced s alleles. Three of these mutations exhibited no deletions or rearrangements of the flanking markers, whereas the other six had two or more of these markers deleted. The extent of the deletions was found to be consistent with the severity of the homozygous phenotype. The location of deletion breakpoints in the induced alleles, coupled with the recombination breakpoints in the backcross progeny, provide useful molecular landmarks to define the location of the piebald gene.

Authors:
;  [1];  [2]; ;  [3];  [4]
  1. Princeton Univ., NJ (United States)
  2. Harvard Medical School, Boston, MA (United States)
  3. Oak Ridge National Laboratory, TN (United States)
  4. Whitehead Institute for Biomedical Research, Cambridge, MA (United States)
Publication Date:
OSTI Identifier:
5135781
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Journal Article
Journal Name:
Genetics; (United States)
Additional Journal Information:
Journal Volume: 136:1; Journal ID: ISSN 0016-6731
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; GENE MUTATIONS; GENETIC MAPPING; MICE; ANIMAL CELLS; BIOLOGICAL MARKERS; CHROMOSOMES; GANGLIONS; LARGE INTESTINE; MELANIN; ANIMALS; BODY; DIGESTIVE SYSTEM; GASTROINTESTINAL TRACT; HYDROXY COMPOUNDS; INTESTINES; MAMMALS; MAPPING; MUTATIONS; NERVOUS SYSTEM; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANS; PIGMENTS; RODENTS; VERTEBRATES; 550400* - Genetics

Citation Formats

Metallinos, D L, Tilghman, S M, Oppenheimer, A J, Rinchik, E M, Russell, L B, and Dietrich, W. Fine structure mapping and deletion analysis of the murine piebald locus. United States: N. p., 1994. Web.
Metallinos, D L, Tilghman, S M, Oppenheimer, A J, Rinchik, E M, Russell, L B, & Dietrich, W. Fine structure mapping and deletion analysis of the murine piebald locus. United States.
Metallinos, D L, Tilghman, S M, Oppenheimer, A J, Rinchik, E M, Russell, L B, and Dietrich, W. 1994. "Fine structure mapping and deletion analysis of the murine piebald locus". United States.
@article{osti_5135781,
title = {Fine structure mapping and deletion analysis of the murine piebald locus},
author = {Metallinos, D L and Tilghman, S M and Oppenheimer, A J and Rinchik, E M and Russell, L B and Dietrich, W},
abstractNote = {Piebald (s) is a recessive mutation that affects the development of two cell types of neural crest origin: melanocytes, responsible for pigment synthesis in the skin, and enteric ganglia, which innervate the lower bowel. As a result, mice carrying piebald mutations exhibit white spotting in the coat and aganglionic megacolon. Previously the gene had been localized to the distal half of mouse chromosome 14. To determine its precise location relative to molecular markers, an intersubspecific backcross was generated. Two anchor loci of chromosome 14, slaty and hypogonadal, in addition to simple sequence length repeat markers, were used to localize s to a 2-cM interval defined by the markers D14Mit38 and D14Mit42. The molecular markers were also used to characterize nine induced s alleles. Three of these mutations exhibited no deletions or rearrangements of the flanking markers, whereas the other six had two or more of these markers deleted. The extent of the deletions was found to be consistent with the severity of the homozygous phenotype. The location of deletion breakpoints in the induced alleles, coupled with the recombination breakpoints in the backcross progeny, provide useful molecular landmarks to define the location of the piebald gene.},
doi = {},
url = {https://www.osti.gov/biblio/5135781}, journal = {Genetics; (United States)},
issn = {0016-6731},
number = ,
volume = 136:1,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}