in electron density maps and the location of errors in these models. Acta Crystallogr. A 47, 110–119 (1991). Supplementary Information accompanies the paper on Nature’s website (ç http://www.nature.com/nature). Acknowledgements We thank A. Nakagawa, A. Miyazaki and K.T. Chongfor their assistance at the beamline BL44XU at SPring-8, Japan; the staff at the X8-C and X25 beamline of Brookhaven National Laboratory and the BioCars beamline at Advanced Photon Source for their assistance; D. Jones and M. Swindells for mGenTHREADER analysis; and members of our division for discussions. This work was supported by grants from the Canadian Institutes of Health Research (CIHR) to I.B. and M.I., and by grants from RIKEN (to K.M.) and the Ministry of Education, Science, Sports, and Culture of Japan (to K.M. and T.M.). M.I. is a CIHR Investigator. Competing interests statement The authors declare that they have no competing ﬁnancial interests. Correspondence and requests for materials should be addressed to M.I. (e-mail: [email protected]). The atomic coordinates for InsP 3 -bound mouse InsP 3 R1 c have been deposited in the Protein Data Bank under accession code 1N4K.Macmillian Magazines Ltd., 2003Nature Publishing GroupLondon, UK0028-083659364700700 .............................................................. erratum The strength of Mg 0.9 Fe 0.1 Si0 3 perovskite at high pressure and temperature Jiuhua Chen, Donald J. Weldner & Michael T. Vaughan Nature 419, 824–826 (2002). ............................................................................................................................................................................. On page 825 of this Letter, the equation should not have contained ‘kern þ1’ in the second term. The equation should read: FWHM 2 ¼ð21EÞ 3 þðKhc=2P sin v 0 Þ 2 A letters to nature NATURE | VOL 420 | 12 DECEMBER 2002 | www.nature.com/nature 700 © 2002 Nature Publishing Group

erratum: The strength of Mg0.9Fe0.1Si03 perovskite at high pressure and temperature

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Page 1: erratum: The strength of Mg0.9Fe0.1Si03 perovskite at high pressure and temperature

in electron density maps and the location of errors in these models. Acta Crystallogr. A 47, 110–119

(1991).

Supplementary Information accompanies the paper on Nature’s website

(ç http://www.nature.com/nature).

Acknowledgements We thank A. Nakagawa, A. Miyazaki and K.T. Chong for their assistance

at the beamline BL44XU at SPring-8, Japan; the staff at the X8-C and X25 beamline of

Brookhaven National Laboratory and the BioCars beamline at Advanced Photon Source for their

assistance; D. Jones and M. Swindells for mGenTHREADER analysis; and members of our

division for discussions. This work was supported by grants from the Canadian Institutes of

Health Research (CIHR) to I.B. and M.I., and by grants from RIKEN (to K.M.) and the Ministry

of Education, Science, Sports, and Culture of Japan (to K.M. and T.M.). M.I. is a CIHR

Investigator.

Competing interests statement The authors declare that they have no competing financial

interests.

Correspondence and requests for materials should be addressed to M.I.

(e-mail: [email protected]). The atomic coordinates for InsP3-bound mouse InsP3R1c

have been deposited in the Protein Data Bank under accession code 1N4K.Macmillian Magazines

Ltd., 2003Nature Publishing GroupLondon, UK0028-083659364700700

..............................................................

erratum

The strength of Mg0.9Fe0.1Si03

perovskite at high pressure andtemperature

Jiuhua Chen, Donald J. Weldner & Michael T. Vaughan

Nature 419, 824–826 (2002)..............................................................................................................................................................................

On page 825 of this Letter, the equation should not have contained‘kern þ1’ in the second term. The equation should read:

FWHM2 ¼ ð21EÞ3þ ðKhc=2P sinv0Þ2

letters to nature