title: One-megabase sequence analysis of the human immunoglobulin lambda gene locus.
abstract: A total of 1,025,415 bases of nucleotide sequence, including the entire human immunoglobulin lambda gene locus has been determined. This is the largest contiguous human DNA sequence ever published. The sequence data revealed the organization of 36 potentially active V lambda gene segments, 33 pseudogene segments, and seven J lambda-C lambda gene segments. Among these 69 functional or nonfunctional V lambda gene segments, 32 were newly discovered. These V lambda gene segments are located within five gene-rich clusters and are divided into five clans based on sequence identity. Five potentially active nonimmunoglobulin genes were also detected within the lambda gene locus, and two other genes were observed in the upstream region. Sequence organization suggests that large DNA duplications diversified the germ-line repertoire of the V lambda gene segments.
authors.affiliation: Department of Molecular Biology, Keio University School of Medicine, Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kawasaki
authors.forename: S
authors.initials: S
authors.lastname: Minoshima
authors.forename: E
authors.initials: E
authors.lastname: Nakato
authors.forename: K
authors.initials: K
authors.lastname: Shibuya
authors.forename: A
authors.initials: A
authors.lastname: Shintani
authors.forename: J L
authors.initials: JL
authors.lastname: Schmeits
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: N
authors.initials: N
authors.lastname: Shimizu
mesh_terms: D000483:Alleles; D017398:Alternative Splicing; D000595:Amino Acid Sequence; D001483:Base Sequence; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D003360:Cosmids; D004247:DNA / Q000032:analysis; D004252:DNA Mutational Analysis; D005091:Exons; D015870:Gene Expression; D006801:Humans; D007127:Immunoglobulin Constant Regions / Q000235:genetics*; D007133:Immunoglobulin Joining Region / Q000235:genetics*; D007135:Immunoglobulin Variable Region / Q000235:genetics*; D007146:Immunoglobulin lambda-Chains / Q000235:genetics*; D007438:Introns; D008969:Molecular Sequence Data; D005810:Multigene Family / Q000235:genetics; D010802:Phylogeny; D011544:Pseudogenes / Q000235:genetics; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid
chemical_list: D007127:Immunoglobulin Constant Regions; D007133:Immunoglobulin Joining Region; D007135:Immunoglobulin Variable Region; D007146:Immunoglobulin lambda-Chains; D004247:DNA