CONSTRUCTION OF THE PHYSICAL MAP FOR 3 LOCI IN CHROMOSOME BAND 13Q14 - COMPARISON TO THE GENETIC-MAP

被引：20

作者：

HIGGINS, MJ

TURMEL, C

NOOLANDI, J

NEUMANN, PE

LALANDE, M

机构：

[1] NATL RES COUNCIL CANADA, BIOTECHNOL RES INST, 6100 ROYALMOUNT AVE, MONTREAL H4P 2R2, QUEBEC, CANADA

[2] XEROX RES CTR CANADA LTD, MISSISSAUGA L5K 2L1, ONTARIO, CANADA

[3] HARVARD UNIV, CHILDRENS HOSP, DIV NEUROL, BOSTON, MA 02115 USA

[4] HARVARD UNIV, CHILDRENS HOSP, DIV GENET, BOSTON, MA 02115 USA

[5] HARVARD UNIV, SCH MED, DEPT NEUROL, BOSTON, MA 02115 USA

[6] HARVARD UNIV, SCH MED, DEPT PEDIAT, BOSTON, MA 02115 USA

[7] HOWARD HUGHES MED INST, BOSTON, MA 02115 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1990年 / 87卷 / 09期

关键词：

D O I：

10.1073/pnas.87.9.3415

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Pulsed-field gel electrophoresis (PFGE) and deletion mapping are being used to construct a physical map of the long arm of human chromosome 13. The present study reports a 2700-kilobase (kb) Not I long-range restriction map encompassing the 13q14-specific loci D13S10, D13S21, and D13S22, which are detected by the cloned DNA markers p7D2, pG24E2.4, and pG14E1.9, respectively. Analysis of a panel of seven cell lines that showed differential methylation of a Not I site between D13S10 and D13S21 proved physical linkage of the two loci to the same 875-kb Not I fragment. D13S22 mapped to a different Not I fragment, precluding the possibility that D13S22 is located between D13S10 and D13S21. PFGE analysis of Not I partial digests placed the 1850-kb Not I fragment containing D13S22 immediately adjacent to the 875-kb fragment containing the other two loci. The proximal rearrangement breakpoint in a cell line carrying a del13(q14.1q21.2) was detected by D13S21 but not by S13S10, demonstrating that D13S21 lies proximal to D13S10. Quantitative analysis of hybridization signals of the three DNA probes to DNA from the same cell line indicated that only D13S10 was deleted, establishing the order of these loci to be cen-D13S22-D13S21-D13S10-tel. Surprisingly, this order was estimated to be 35,000 times less likely than that favored by genetic linkage analysis.

引用

页码：3415 / 3419

页数：5

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