Journal
CELLULAR AND MOLECULAR LIFE SCIENCES
Volume 66, Issue 4, Pages 681-696Publisher
SPRINGER BASEL AG
DOI: 10.1007/s00018-009-8645-1
Keywords
Shroom; Apx; MCAM; CD146; melanoma
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Funding
- Bernese Cancer League
- Raine Foundation
- Cancer Foundation of Western Australia
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hShroom1 (hShrm1) is a member of the Apx/Shroom (Shrm) protein family and was identified from a yeast two-hybrid screen as a protein that interacts with the cytoplasmic domain of melanoma cell adhesion molecule (MCAM). The characteristic signature of the Shrm family is the presence of a unique domain, ASD2 (Apx/Shroom domain 2). mRNA analysis suggests that hShrm1 is expressed in brain, heart, skeletal muscle, colon, small intestine, kidney, placenta and lung tissue, as well a variety of melanoma and other cell lines. Co-immunoprecipitation and bioluminescence resonance energy transfer (BRET) experiments indicate that hShrm1 and MCAM interact in vivo and by immunofluorescence microscopy some co-localization of these proteins is observed. hShrm1 partly co-localises with beta-actin and is found in the Triton X-100 insoluble fraction of melanoma cell extracts. We propose that hShrm1 is involved in linking MCAM to the cytoskeleton.
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