Article (Scientific journals)
The 67-kDa laminin receptor originated from a ribosomal protein that acquired a dual function during evolution.
Ardini, E.; Pesole, G.; Tagliabue, E. et al.
1998In Molecular Biology and Evolution, 15 (8), p. 1017-25
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Keywords :
Amino Acid Sequence; Animals; Binding Sites/genetics; Evolution, Molecular; Humans; Laminin/metabolism; Molecular Sequence Data; Molecular Weight; Neoplasms/genetics; Phylogeny; Protein Precursors/chemistry/genetics/metabolism; Receptors, Laminin/chemistry/genetics/metabolism; Ribosomal Proteins/chemistry/genetics; Sequence Homology, Amino Acid
Abstract :
[en] The 67-kDa laminin receptor (67LR) is a nonintegrin cell surface receptor that mediates high-affinity interactions between cells and laminin. Overexpression of this protein in tumor cells has been related to tumor invasion and metastasis. Thus far, only a full-length gene encoding a 37-kDa precursor protein (37LRP) has been isolated. The finding that the cDNA for the 37LRP is virtually identical to a cDNA encoding the ribosomal protein p40 has suggested that 37LRP is actually a component of the translational machinery, with no laminin-binding activity. On the other hand, a peptide of 20 amino acids deduced from the sequence of 37LR/p40 was shown to exhibit high laminin-binding activity. The evolutionary relationship between 23 sequences of 37LRP/p40 proteins was analyzed. This phylogenetic analysis indicated that all of the protein sequences derive from orthologous genes and that the 37LRP is indeed a ribosomal protein that acquired the novel function of laminin receptor during evolution. The evolutionary analysis of the sequence identified as the laminin-binding site in the human protein suggested that the acquisition of the laminin-binding capability is linked to the palindromic sequence LMWWML, which appeared during evolution concomitantly with laminin.
Disciplines :
Biochemistry, biophysics & molecular biology
Oncology
Author, co-author :
Ardini, E.
Pesole, G.
Tagliabue, E.
Magnifico, A.
Castronovo, Vincenzo ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie générale et cellulaire - GIGA-R : Labo de recherche sur les métastases
Sobel, M. E.
Colnaghi, M. I.
Menard, S.
Language :
English
Title :
The 67-kDa laminin receptor originated from a ribosomal protein that acquired a dual function during evolution.
Publication date :
1998
Journal title :
Molecular Biology and Evolution
ISSN :
0737-4038
eISSN :
1537-1719
Publisher :
Oxford University Press, New York, United States - New York
Volume :
15
Issue :
8
Pages :
1017-25
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
AIRC/FIRC
EU Project BIO4-CT95-0130
Available on ORBi :
since 28 September 2009

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