Vλ and Jλ‐Cλ gene segments of the human immunoglobulin λ light chain locus are separated by 14 kb and rearrange by a deletion mechanism

Vλ and Jλ‐Cλ gene segments of the human immunoglobulin λ light chain locus are separated by 14 kb and rearrange by a deletion mechanism
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人免疫球蛋白λ轻链位点的Vλ和Jλ-Cλ基因片段相距14kb,并通过删除机制重新排列

DOI:
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发表时间:
1991
期刊:
影响因子:
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通讯作者:
H. Klobeck
H. Klobeck
中科院分区:
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文献类型:
--
作者:
G. Combriato;H. Klobeck

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我们在22号染色体上克隆了人免疫球蛋白λ轻链基因座的124 kb区域,包含7个Vλ和7个J-C λ基因片段。在编码Ke+Oz−同种型的Cλ7下游35 kb区域没有发现其他Cλ基因片段。Cλ近端Vλ基因片段VλIII。1位于Cλ1上游14.5kb处。5个测序的Vλ基因与J-C λ基因片段具有相同的转录方向,这可能适用于人类λ基因座中的大多数Vλ基因片段,并表明DNA重排的缺失机制。这得到了Vλ基因探针与来自λ轻链产生细胞系的生殖系和重排DNA杂交的支持。23个cDNA克隆的序列允许基于核酸序列数据和J-C λ使用的估计建立Vλ亚组分类。
We have cloned a region of 124 kb of the human immunoblogulin λ light chain locus on chromosome 22 encompassing seven Vλ and seven J‐Cλ gene segments. No further Cλ gene segment was found in a region of 35 kb downstream of Cλ7, which encodes the Ke+Oz− isotype. The Cλ proximal Vλ gene segment VλIII. 1 is located 14.5 kb upstream of Cλ1. The five sequenced Vλ genes have the same transcriptional orientation as the J‐Cλ gene segments which is likely to be true for the majority of the Vλ gene segments in the human λ locus and which suggests a deletion mechanism for DNA rearrangement. This is supported by hybridization of Vλ gene probes to germ‐line and rearranged DNA from λ light chain‐producing cell lines. Sequences of 23 cDNA clones allow to establish a Vλ subgroup classification based on nucleic acid sequence data and an estimate of the J‐Cλ usage.
天然自身抗体由种系重链和 lambda 轻链可变区基因编码,无体细胞突变。
DOI: 10.1172/jci114347
发表时间: 1989
期刊: The Journal of clinical investigation
影响因子: --
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发表时间: 1988
影响因子: 14.9
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发表时间: 1984-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
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血清学定义的人 lambda 轻链 V 区亚群。
DOI: --
发表时间: 1987
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作者:
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