Skip to main content

Structure of a tropomyosin N‐terminal fragment at 0.98 Å resolution

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Tropomyosin (TM) is an elongated two‐chain protein that binds along actin filaments. Important binding sites are localized in the N‐terminus of tropomyosin. The structure of the N‐terminus of the long muscle α‐TM has been solved by both NMR and X‐ray crystallography. Only the NMR structure of the N‐terminus of the short nonmuscle α‐TM is available. Here, the crystal structure of the N‐terminus of the short nonmuscle α‐TM (αTm1bZip) at a resolution of 0.98 Å is reported, which was solved from crystals belonging to space group P31 with unit‐cell parameters a = b = 33.00, c = 52.03 Å, α = β = 90, γ = 120°. The first five N‐terminal residues are flexible and residues 6–35 form an α‐helical coiled coil. The overall fold and the secondary structure of the crystal structure of αTM1bZip are highly similar to the NMR structure and the atomic coordinates of the corresponding Cα atoms between the two structures superimpose with a root‐mean‐square deviation of 0.60 Å. The crystal structure validates the NMR structure, with the positions of the side chains being determined precisely in our structure.

Document Type: Research Article

DOI: http://dx.doi.org/10.1107/S090744491102645X

Publication date: September 1, 2011

bsc/ayd/2011/00000067/00000009/art00009
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more