MOLECULAR CHARACTERIZATION OF G2M(N+) AND G2M(N-) ALLOTYPES

被引:35
作者
BRUSCO, A
DELANGE, GG
BOCCAZZI, C
CARBONARA, AO
机构
[1] CIOS,DIPARTIMENTO GENET BIOL & CHIM MED,I-10126 TURIN,ITALY
[2] CIOS,CTR CNR,I-10126 TURIN,ITALY
[3] NETHERLANDS RED CROSS,BLOOD TRANSFUS SERV,CENT LAB,AMSTERDAM,NETHERLANDS
关键词
D O I
10.1007/BF00179404
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Immunoglobulin (Ig) allotype typing is usually performed with serological methods based on hemagglutination inhibition. The recent development of molecular techniques has allowed the molecular typing of several Ig markers. The hinge, CH2, and CH3 domains of the G2 gene from six unrelated individuals (three G2m(n+) and three G2m(n-)) were amplified and cloned to establish the molecular basis of the G2m(n+) and G2m(n-). Comparison of the allele sequences revealed three changes: two (codons 308 and 437) are silent exonic substitutions, one is a G to A transition corresponding to an amino acid difference in position 282: Val (GTG) in G2m(n-), Met (ATG) in G2m(n+). These substitutions were identified via two approaches: 282 polymorphism, after digestion of a specific polymerase chain reaction product with Nla III followed by acrylamide electrophoresis; 308 and 437, by a dot-blot technique using allele-specific oligonucleotides. These molecular typing results correspond exactly to those obtained serologically; moreover, the three substitutions defining the G2m(n+) and G2m(n-) alleles are always associated in a strict linkage disequilibrium.
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页码:414 / 417
页数:4
相关论文
共 18 条
[1]   DNA-SEQUENCES SPECIFIC FOR CAUCASIAN G3M(B) AND (G) ALLOTYPES - ALLOTYPING AT THE GENOMIC LEVEL [J].
BALBIN, M ;
GRUBB, A ;
DELANGE, GG ;
GRUBB, R .
IMMUNOGENETICS, 1994, 39 (03) :187-193
[2]  
BALBIN M, 1991, EXP CLIN IMMUNOGENET, V8, P88
[3]   RESTRICTION FRAGMENT LENGTH POLYMORPHISMS ASSOCIATED WITH IMMUNOGLOBULIN C-GAMMA GENES REVEAL LINKAGE DISEQUILIBRIUM AND GENOMIC ORGANIZATION [J].
BECHHANSEN, NT ;
LINSLEY, PS ;
COX, DW .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES, 1983, 80 (22) :6952-6956
[4]  
BOTTARO A, 1990, HUM GENET, V86, P191
[5]  
BRUSCO A, 1995, HUM GENET, V95, P319
[6]  
DELANGE GG, 1989, EXP CLIN IMMUNOGENET, V6, P7
[7]  
ELLISON J, 1982, P NATL ACAD SCI USA, V89, P1984
[8]   BAMHI AND SACI RFLPS OF THE HUMAN-IMMUNOGLOBULIN IGHG-GENES WITH REFERENCE TO THE GM POLYMORPHISM IN AFRICAN PEOPLE - EVIDENCE FOR A MAJOR POLYMORPHISM [J].
GHANEM, N ;
BENSMANA, M ;
DUGOUJON, JM ;
CONSTANS, J ;
LEFRANC, MP ;
LEFRANC, G .
HUMAN GENETICS, 1989, 83 (01) :37-44
[9]  
GRUBB R, 1990, EXP CLIN IMMUNOGENET, V7, P205
[10]  
JAZWINSKA EC, 1988, AM J HUM GENET, V43, P175