Table I.

Structural Properties

Slack sarcomeres
Length		1.98 ± 0.15 μm (n = 22)
T12-Ti102 distance		130 nm*
Sarcomere length range 4.1–4.2 μm
1st Tandem Ig segment
End-to-end length		284 ± 16 nm
Interdomain spacing‡		4.3 ± 0.2 nm
PEVK segment
End-to-end length		730 ± 18 nm
PEVK residue spacing‡		0.33 nm
2nd Tandem Ig segment
End-to-end length		138 ± 16 nm
Interdomain spacing‡		4.9 ± 0.6 nm

^* Determined from linear regression analysis of data shown in Fig. 2.  

^‡ Assumption: 1st tandem Ig segment contains 66 Ig-like domains; 2nd tandem Ig domain contains 28 Ig/Fn-like domains; PEVK contains 2174 residues (to account for three Ig domains 13 nm was subtracted from measured N2A-514 distance).