Publication Date:
1986-10-17
Description:
The critical role of interleukin-2 (IL-2) in immune response heightens the need to know its structure in order to understand its activity. New computer-assisted predictive methods for the assignment of secondary structure together with a method to predict the tertiary structure of a protein from data on its primary sequence and secondary structure were applied to IL-2. This method generated four topological families of structures, of which the most plausible is a right-handed fourfold alpha-helical bundle. Members of this family were shown to be compatible with existing structural data on disulfide bridges and monoclonal antibody binding for IL-2. Experimental estimates of secondary structure from circular dichroism and site-directed mutagenesis data support the model. A region likely to be important in IL-2 binding to its receptor was identified as residues Leu36, Met38, Leu40, Phe42, Phe44, and Met46.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, F E -- Kosen, P A -- Kuntz, I D -- Epstein, L B -- Ciardelli, T L -- Smith, K A -- CA27903/CA/NCI NIH HHS/ -- GM34197/GM/NIGMS NIH HHS/ -- MOJ JD17001/PHS HHS/ -- etc. -- New York, N.Y. -- Science. 1986 Oct 17;234(4774):349-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3489989" target="_blank"〉PubMed〈/a〉
Keywords:
Amino Acid Sequence
;
Animals
;
Computer Simulation
;
Humans
;
*Interleukin-2/genetics/physiology
;
Mice
;
Models, Molecular
;
Structure-Activity Relationship
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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