Human collagen genes encoding basement membrane. cap alpha. 1(IV) and. cap alpha. 2(IV) chains map to the distal long arm of chromosome 13
At least 20 genes encode the structurally related collagen chains that comprise > 10 homo- or heterotrimeric types. Six members of this multigene family have been assigned to five chromosomes in the human genome. The two type I genes, ..cap alpha..1 and ..cap alpha..2, are located on chromosomes 17 and 7, respectively, and the ..cap alpha..1(II) gene is located on chromosome 12. Their recent mapping of the ..cap alpha..1(III) and ..cap alpha..2(V) genes to the q24.3 ..-->.. q31 region of chromosome 2 provided the only evidence that the collagen genes are not entirely dispersed. To further determine their organization, the authors and others localized the ..cap alpha..1(IV) gene to chromosome 13 and in their experiments sublocalized the gene to band q34 by in situ hybridization. Here they show the presence of the ..cap alpha..2 type IV locus also on the distal long arm of chromosome 13 by hybridizing a human ..cap alpha..2(IV) cDNA clone to rodent-human hybrids and to metaphase chromosomes. These studies represent the only demonstration of linkage between genes encoding both polypeptide chains of the same collagen type.
- Research Organization:
- Univ. of Pennsylvania, Philadelphia, PA (United States)
- OSTI ID:
- 6216098
- Journal Information:
- Proc. Natl. Acad. Sci. U.S.A.; (United States), Vol. 84:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
62 RADIOLOGY AND NUCLEAR MEDICINE
CHROMOSOMES
AUTORADIOGRAPHY
COLLAGEN
GENETIC MAPPING
GENE REGULATION
GENES
HYBRIDIZATION
PHOSPHORUS 32
POLYPEPTIDES
TRITIUM COMPOUNDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DAYS LIVING RADIOISOTOPES
ISOTOPES
LABELLED COMPOUNDS
LIGHT NUCLEI
MAPPING
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
PEPTIDES
PHOSPHORUS ISOTOPES
PROTEINS
RADIOISOTOPES
SCLEROPROTEINS
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