Linked Life Data

1532043

Source:http://linkedlifedata.com/resource/pubmed/id/1532043

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1992-4-15
pubmed:databankReference
pubmed:abstractText
By screening a Mycobacterium leprae lambda gt11 genomic DNA library with leprosy-patient sera we have previously identified 50 recombinant clones that expressed novel M. leprae antigens (Sathish et al., 1990). In this study, we show by DNA sequencing and immunoblot analysis that three of these clones express a M. leprae homologue of the fibronectin-binding antigen 85 complex of mycobacteria. The complete gene was characterized and it encodes a 327-amino-acid polypeptide, consisting of a consensus signal sequence of 38 amino acids followed by a mature protein of 289 amino acids. This is the first sequence of a member of the M. leprae antigen 85 complex, and Southern blotting analysis indicated the presence of multiple genes of the 85 complex in the genome of M. leprae. The amino acid sequence displays 75-85% sequence identity with components of the antigen 85 complex from M. tuberculosis, M. bovis BCG and M. kansasii. Furthermore, antibodies to the antigen 85 complex of M. tuberculosis and M. bovis BCG reacted with two fusion proteins containing the amino acid regions 55-266 and 266-327 of the M. leprae protein. The M. leprae 30/31 kDa protein induces strong humoral and cellular responses, as judged by Western blot analysis with patient sera and proliferation of T cells derived from healthy individuals and leprosy patients. Amino acid regions 55-266 and 265-327 both were shown to bind to fibronectin, indicating the presence of at least two fibronectin-binding sites on the M. leprae protein. These data indicate that this 30/31 kDa protein is not only important in the immune response against M. leprae, but may also have a biological role in the interaction of this bacillus with the human host.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0950-382X
pubmed:author
pubmed:issnType
Print
pubmed:volume
6
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
153-63
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed-meshheading:1532043-Amino Acid Sequence, pubmed-meshheading:1532043-Antigens, Bacterial, pubmed-meshheading:1532043-B-Lymphocytes, pubmed-meshheading:1532043-Bacterial Proteins, pubmed-meshheading:1532043-Base Sequence, pubmed-meshheading:1532043-Blotting, Western, pubmed-meshheading:1532043-Carrier Proteins, pubmed-meshheading:1532043-Cell Line, pubmed-meshheading:1532043-DNA, Bacterial, pubmed-meshheading:1532043-DNA, Recombinant, pubmed-meshheading:1532043-Electrophoresis, Polyacrylamide Gel, pubmed-meshheading:1532043-Gene Expression, pubmed-meshheading:1532043-Humans, pubmed-meshheading:1532043-Lymphocyte Activation, pubmed-meshheading:1532043-Molecular Sequence Data, pubmed-meshheading:1532043-Mycobacterium leprae, pubmed-meshheading:1532043-Receptors, Fibronectin, pubmed-meshheading:1532043-Receptors, Immunologic, pubmed-meshheading:1532043-T-Lymphocytes
pubmed:year
1992
pubmed:articleTitle
Molecular and immunological analysis of a fibronectin-binding protein antigen secreted by Mycobacterium leprae.
pubmed:affiliation
Department of Immunohaematology, University Hospital Leiden, The Netherlands.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't