Professional Experience:

   2006-            Post-doctoral fellow.  Section of Microbiology,University of California-Davis, USA.

   2003-2006    Research worker.  Chalmers University of

           Technology, Sweden.

   2000-2003    Post-doctoral fellow.  Section of Microbiology,

           University of California-Davis, USA.

   1999-2000    Research worker.  Chalmers University of

           Technology, Sweden.

   1997-1999    Research worker.  Institute Curie, France.

   1994-1997    Research Associate.  Research Institute for

           Microbial Diseases, Osaka University, Japan.

Selected publications:

Morimatsu, K., Takahashi M.
Structural analysis of RecA protein-DNA complexes by fluorescence-detected linear dichroism: absence of structural change of filament for pairing of complementary DNA strands.  Anal Biochem. 2006 Nov 15;358(2):192-8. 

Frykholm K, Morimatsu, K., Nordén B.
Conserved conformation of RecA protein after executing the DNA strand-exchange reaction. A site-specific linear dichroism structure study.
Biochemistry. 2006 Sep 19;45(37):11172-8. 

Morimatsu, K. and Kowalczykowski, S.C.  (2003).  
RecFOR proteins load RecA protein onto gapped DNA to accelerate DNA strand exchange: A universal step of recombinational repair. 
Mol. Cell, 11, 1337-1347  [Abstract]  [Full Text]  [PDF]

Stohl, E.A., Brockman, J., Burkle, K.L., Morimatsu, K, Kowalczykowski, S.C., and Seifert, H.S. (2003)
Escherichia coli RecX inhibits RecA recombinase and coprotease activities in vitro and in vivo.
J. Biol. Chem., 278, 2278-2285 (published November 9, 2002 as 10.1074/jbc.M210496200).  [Abstract]  [Full Text]  [PDF]

Kim HK, Morimatsu, K., Nordén B, Ardhammar M, Takahashi M.
ADP stabilizes the human Rad51-single stranded DNA complex and promotes its DNA annealing activity.
Genes Cells. 2002 Nov;7(11):1125-34. 

Morimatsu, K., Takahashi M, Nordén B.
Arrangement of RecA protein in its active filament determined by polarized-light spectroscopy.
Proc Natl Acad Sci U S A. 2002 Sep 3;99(18):11688-93. 

Morimatsu, K., Funakoshi T, Horii T, Takahashi M.
Interaction of tyrosine 65 of RecA protein with the first and second DNA strands.
J Mol Biol. 2001 Feb 16;306(2):189-99. 

Morimatsu, K., Morikawa T, Tanabe K, Bzik DJ, Horii T.
Sequence diversity in the amino-terminal 47 kDa fragment of the Plasmodium falciparum serine repeat antigen.
Mol Biochem Parasitol. 1997 Jun;86(2):249-54. 

Morimatsu, K., Maraboeuf F, Hagmar P, Nordén B, Horii T, Takahashi M.
Roles of Tyr103 and Tyr264 in the regulation of RecA-DNA interactions by nucleotide cofactors.
Eur J Biochem. 1996 Aug 15;240(1):91-7.

Morimatsu, K., Horii T.
DNA-binding surface of RecA protein photochemical cross-linking of the first DNA binding site on RecA filament.
Eur J Biochem. 1995 Dec 15;234(3):695-705. 

Morimatsu, K., Horii T, Takahashi M.
Interaction of Tyr103 and Tyr264 of the RecA protein with DNA and nucleotide cofactors. Fluorescence study of engineered proteins.
Eur J Biochem. 1995 Mar 15;228(3):779-85.

Morimatsu, K., Horii T.
The DNA-binding site of the RecA protein. Photochemical cross-linking of Tyr103 to single-stranded DNA.
Eur J Biochem. 1995 Mar 15;228(3):772-8. 

Morimatsu, K., Horii T.
Analysis of the DNA binding site of Escherichia coli RecA protein.
Adv Biophys. 1995;31:23-48.