Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1995-5-11
pubmed:abstractText
We have produced four monoclonal antibodies (mAbs) against human placenta laminin purified by immunoaffinity chromatography. Three clones, 2D9, 3DM, and 4F1, recognized 320 kDa (M) chain of the laminin and the other one, 3DB, recognized B2 chain. One cDNA clone (HLM-1, 3.5 kb) was immunoscreened from human placenta cDNA library using 2D9, and three further overlapping cDNA clones (HLM-2, HLM-3, and HLM-4) covering 2.0 kb were isolated. Nucleotide sequencing and fusion protein analysis demonstrated that the amino acid sequence deduced from HLM-1 coincided with that of the G-domain of human merosin chain, and HLM-2, HLM-3, and HLM-4 encoded the long-arm and EGF-like domain of M chain. The binding regions of 2D9 and 3DM to M chain were defined as homologous repeating sequences of G2-G3 region of G-domain and the carboxy-terminal region of the long-arm, respectively. The extents of identity of amino acid sequences of the long-arm and EGF-like domains between human M chain and A chain were about 37% and 52%, respectively, which were lower than between mouse and human A chains. Northern blot analysis revealed that M chain mRNA, 8.6 kb, was highly expressed in heart and placenta, but less highly expressed in skeletal muscle, brain, and lung. Immunostaining showed selective distributions of M chain in nerve fibers in the dermis and mesangial matrix of the kidney, and B2 chain in subepidermal and kidney glomerular basement membranes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0021-924X
pubmed:author
pubmed:issnType
Print
pubmed:volume
116
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1212-9
pubmed:dateRevised
2007-12-19
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Human laminin M chain: epitope analysis of its monoclonal antibodies by immunoscreening of cDNA clones and tissue expression.
pubmed:affiliation
Department of Tissue Physiology, Tokyo Medical and Dental University.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't