There are 20 partial D-domains, found as tandem repeats, inserted between two of the four full D-domains and an additional partial D-domain. (embl.de)
The first, TSP-1 and -2, are homotrimeric molecules, each monomer containing an N-terminal/heparin-binding domain, a coiled-coil oligomerization domain, a von Willebrand factor-type/procollagen homology domain, three type 1 thrombospondin repeats (TSR), three EGF-like repeats, seven TSP type 3 repeats, and a C-terminal globular domain. (bio-techne.com)
Protein1
Expression of mouse zonadhesin mRNA is evident only within the testis, and the protein is found exclusively on the apical region of the sperm head. (embl.de)
Species2
VLDLR also shows high homology among various species. (wikipedia.org)
This level of homology between species is much higher than that found for LDLR. (wikipedia.org)
Family1
In particular, there is 50% overall sequence homology between VLDLR and ApoER2, another lipoprotein receptor of this family. (wikipedia.org)