Download MendeleyStructure of melanoma inhibitory activity protein, a member of a recently identified family of secreted proteins.
Lougheed, J.C., Holton, J.M., Alber, T., Bazan, J.F., Handel, T.M.(2001) Proc Natl Acad Sci U S A 98: 5515-5520
- PubMed: 11331761
- DOI: https://doi.org/10.1073/pnas.091601698
- Primary Citation of Related Structures:
1I1J - PubMed Abstract:
Melanoma inhibitory activity (MIA) is a 12-kDa protein that is secreted from both chondrocytes and malignant melanoma cells. MIA has been reported to have effects on cell growth and adhesion, and it may play a role in melanoma metastasis and cartilage development. We report the 1.4-A crystal structure of human MIA, which consists of an Src homology 3 (SH3)-like domain with N- and C-terminal extensions of about 20 aa. each. The N- and C-terminal extensions add additional structural elements to the SH3 domain, forming a previously undescribed fold. MIA is a representative of a recently identified family of proteins and is the first structure of a secreted protein with an SH3 subdomain. The structure also suggests a likely protein interaction site and suggests that, unlike conventional SH3 domains, MIA does not recognize polyproline helices.
Organizational Affiliation:
Department of Molecular and Cell Biology, 229 Stanley Hall, University of California, Berkeley, CA 94720, USA.
