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Rockefeller University Press, Journal of Experimental Medicine, 4(164), p. 1274-1283, 1986

DOI: 10.1084/jem.164.4.1274

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Quantitative variations of the C3b/C4b receptor (CR1) in human erythrocytes are controlled by genes within the regulator of complement activation (RCA) gene cluster

Journal article published in 1986 by S. Rodriguez de Cordoba ORCID, P. Rubinstein
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The genetic relationships of quantitative and structural variations of the C3b/C4b receptor (CR1) in human erythrocytes have been analyzed in informative families. Our results demonstrate the existence of multiple discrete quantitative variations of CR1 controlled by a locus, C3bRQ, closely linked to the CR1 structural locus, C3bR. Since the amounts of CR1 produced by each C3bR allele are shown to be independently regulated, we propose that a cis-acting genetic mechanism controls the level of expression of the C3bR alleles, and that this quantitative control plays a major, if not the sole, role in determining the total amounts of CR1 on normal human erythrocytes.