| Title: |
Membrane compartmentalization in Southeast Asian ovalocytosis red blood cells |
| Authors: |
Mirchev, Rossen; Lam, Alexander; Golan, David E. |
| Source: |
British Journal of Haematology ; volume 155, issue 1, page 111-121 ; ISSN 0007-1048 1365-2141 |
| Publisher Information: |
Wiley |
| Publication Year: |
2011 |
| Collection: |
Wiley Online Library (Open Access Articles via Crossref) |
| Description: |
Summary Red blood cells (RBCs) from individuals with Southeast Asian ovalocytosis (SAO) contain a mutant band 3 protein that causes the formation of unique linear oligomers in the RBC membrane. We used single‐particle tracking to measure the lateral diffusion of individual glycophorin C (GPC), band 3, and CD58 proteins in membranes of intact SAO RBCs and normal RBCs (nRBCs). GPC, an integral protein that binds with high affinity to the RBC membrane skeleton, showed oscillatory motion within confinement areas that were smaller in SAO RBCs than in nRBCs. The additional confinement in SAO RBCs could be due to membrane stiffening associated with the SAO phenotype. Band 3 in both SAO RBCs and nRBCs also showed confined motion over short times (ms) and distances (nm), and the area of confinement was smaller in SAO RBCs than in nRBCs. These data presumably reflect the constraints imposed by band 3 oligomerization. Similarly, the glycosylphosphatidylinositol‐linked protein CD58 showed loosely confined diffusion in nRBCs and a substantially higher degree of confinement in SAO RBCs. Restricted protein mobility could contribute to the altered adherence of parasite‐infected RBCs to vascular endothelium that is thought to protect individuals with SAO from severe manifestations of malaria. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1111/j.1365-2141.2011.08805.x |
| Availability: |
https://doi.org/10.1111/j.1365-2141.2011.08805.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2141.2011.08805.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2141.2011.08805.x |
| Rights: |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
| Accession Number: |
edsbas.789002EC |
| Database: |
BASE |