                   Gundeep Kaur 1 , Dipak Dutta 2 and Krishan Gopal Thakur 1, * 1 Structural Biology Laboratory, G. N. Ramachandran Protein Centre, CSIR&Institute of Microbial Technology, Chandigarh&160036, INDIA 2 Molecular Biochemistry Laboratory, CSIR&Institute of Microbial Technology, Chandigarh& 160036, INDIA * Correspondence to: Krishan Gopal Thakur, Structural Biology Laboratory, G. N. Ramachandran Protein Centre, CSIR&Institute of Microbial Technology, Chandigarh&160036, INDIA Email: krishang@imtech.res.in Tel: +91&172&6665470 Fax: +91&172&2690585  ! CarD , CarD/CdnL&Like family , Transcription regulation , RNA polymerase binding protein ,   , X&ray crystallography, Domain swapping " # ! Crystal structure of   CarD Structure Note Proteins: Structure, Function and Bioinformatics DOI 10.1002/prot.24419 This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as an ‘Accepted Article’, doi: 10.1002/prot.24419 © 2013 Wiley Periodicals, Inc. Received: Jul 09, 2013; Revised: Aug 28, 2013; Accepted: Sep 03, 2013