Leiden Muscular Dystrophy pages©

New DMD (CA)n-repeats

(modified last January 25, 2001)


Contents




DMDSTR07A


DMDSTR07A has been contributed to these pages by Sander Kneppers, Dept. Human Genetics, Leiden University Medical Center (E-mail sander@ruly46.MedFac.LeidenUniv.nl).


1. Marker details

Localization Xp21.1
Heterozygosity frequency 0.68
Length most frequent allele 226 bp
Length variation alleles 218-235 bp
Number of alleles found 12

2. Primer details

  Name Localization Sequence
Forward primer DMDSTR07A-F intron 7: 22,068-22,085 ttctggttttctggtctg
Reverse primer DMDSTR07A-R intron 7: 22,298-22,279 gaatcaatctctctgtcaag

3. Allele frequencies

Allele number Length in bp Frequency
  218 0.04
  224 0.08
  225 0.06
  226 0.44
  227 0.02
  228 0.08
  229 0.06
  230 0.08
  231 0.06
  233 0.02
  234 0.02
  235 0.04

NOTE: frequencies determined on 50 chromosomes.

4. PCR-conditions



DMDSTR07B


DMDSTR07B has been contributed to these pages by Sander Kneppers, Dept. Human Genetics, Leiden University Medical Center (E-mail sander@ruly46.MedFac.LeidenUniv.nl).


1. Marker details

Localization Xp21.1
Heterozygosity frequency 0.44
Length most frequent allele 231 bp
Length variation alleles 227-241 bp
Number of alleles found 7

2. Primer details

  Name Localization Sequence
Forward primer DMDSTR07B-F intron 7: 23,231-23,250 agctattatctgagaaagtc
Reverse primer DMDSTR07B-R intron 7: 23,462-23,443 tgaggtgaatttattaaggg

3. Allele frequencies

Allele number Length in bp Frequency
  227 0.02
  229 0.04
  231 0.70
  233 0.12
  235 0.08
  237 0.02
  239 -
  241 0.02

NOTE: frequencies determined on 50 chromosomes.

4. PCR-conditions



DMD-P20 (DXS269)


DMD-P20 DXS269) has been contributed to these pages by Sander Kneppers, Dept. Human Genetics, Leiden University Medical Center (E-mail sander@ruly46.MedFac.LeidenUniv.nl).


1. Marker details

Localization Xp21.1
Heterozygosity frequency 0.59
Length most frequent allele 220 bp
Length variation alleles 216-241 bp
Number of alleles found 7

2. Primer details

  Name Localization Sequence
Forward primer DMD-P20F intron 44: 2,948-2,967 (M86524) acagaaggggaggtacagca
Reverse primer DMD-P20R intron 44: 3,185-3,164 (M86524) gccacaacatatgcttgaaaga

3. Allele frequencies

Allele number Length in bp Frequency
  216 0.09
  220 0.59
  224 0.04
  228 0.17
  230 0.04
  239 0.06
  241 0.02

NOTE: frequencies determined on 54 chromosomes.

4. PCR-conditions



PCR-conditions


a. PCR ingredients

Component PCR-reaction
name concentration stock final concentration amount in ”l
autoclaved water - - 15.4
SuperTaq buffer 10 * buffer 1 * buffer 2.5
dNTP's 2 mM 0.2 mM 2.5
primer mix 25 ”M of each primer 0.5 ”M 0.5
MgCl2 25 mM - -
DMSO 100 % - -
BSA 10 mg/ml - -
Taq-polymerase 5U/”l 0.5 U 0.1
alpha-32P-dCTP 1”Ci/”l - -
DNA template 50 ng/”l 200 ng 4
final volume PCR 25

b. PCR-cycling

PCR step temperature in șC time in sec. number of cycli
denaturation template 95 300 1
denaturation 94 30 30
annealing 55 30
elongation 72 30
final elongation 72 300 1
store 4   1


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