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Figure 1.
Fig. 1. Fold and arrangement of SCR domains in CD55[34].
This figure was drawn using AESOP (M. E. M. Noble, unpublished
program). A, secondary structure and location of disulfide bonds
in CD55[34]. Strands are labeled according to the convention
defined by Norman et al. (35). Note that there is no strand 1 as
the hydrogen-bonding pattern of these residues does not meet the
strict criteria for definition of a  -strand. B,
variation in orientation between SCR domains 3 and 4 in the five
independent copies of CD55[34] found in the different crystal
forms (Table I). C, model for topology of CD55 in the membrane
based on our structure of CD55[34].
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