Correction: Core Binding Factor β-smooth Muscle Myosin Heavy Chain Chimeric ProteinInvolved in Acute Myeloid Leukemia Forms Unusual Nuclear Rod-Like Structures inTransformed NIH 3T3 CellsSource: Proceedings of the National Academy of Sciences of the United States of America,Vol. 93, No. 26 (Dec. 24, 1996), p. 15522Published by: National Academy of SciencesStable URL: http://www.jstor.org/stable/40915 .

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15522 Corrections

Biochemistry. In the article "The putative actin-binding role of hydrophobic residues Trp546 and Phe547 in chicken gizzard heavy meromyosin" by Hirofumi Onishi, Manuel F. Morales, Kazuo Katoh, and Keigi Fujiwara, which appeared in number 26, December 19, 1995 of Proc. Natl. Acad. Sci. USA (92, 11965-11969), the authors request that the following be noted. In the Results section under "Enzymatic Properties," 104 and 19 iM-1 should be 1.04 x 104 and 1.9 x 103 M-~, respectively. In the last column of Table 1, 22, 104, 27, and 19 jM-1 should be 2.2 x 103, 1.04 x 104, 2.7 x 103, and 1.9 x 103 M-1 respectively. The correct table is shown below.

Table 1. ATPase activities of wild-type and mutant HMMs

MgATPase, nmol of Pi

per min per mg of

protein Actin-activated MgATPase

High Low Vmax, nmol of Pi per Ka, HMM salt salt min per mg M-1 X 10-3

Wild-type -kinase 3.7 1.3 76 2.2 +kinase 3.2 637 10.4

Mutant -kinase 4.4 2.7 49 2.7 +kinase 5.8 65 1.9

Vmax is the maximum actin-activated ATPase activity of HMM and Ka is the apparent binding constant for HMM to actin, which is defined to be the reciprocal of the apparent Km from the double reciprocal plots (Fig. 4). To phosphorylate the regulatory light chain of HMM, myosin light chain kinase, calmodulin, and Ca2+ were added to the ATPase assay medium. -, Not measured.

Biochemistry. In the article "Cloning and characterization of four murine homeobox genes" by Alessandra Cecilia Roves- calli, Sadamitsu Asoh, and Marshall Nirenberg, which ap- peared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10691-10696), the following should be noted: The Genbank accession numbers for Uncx-4.1, OG-2, OG-9, OG- 12, OG-12a, and OG-12b were incorrect in the footnotes to the article. The correct order is as follows: Uncx-4.1: U65069, U65070; OG-2: U65067; OG-9: U65068; OG-12: U65071, U65072; OG-12a: U66918; and OG-12b: U67055.

15522 Corrections

Biochemistry. In the article "The putative actin-binding role of hydrophobic residues Trp546 and Phe547 in chicken gizzard heavy meromyosin" by Hirofumi Onishi, Manuel F. Morales, Kazuo Katoh, and Keigi Fujiwara, which appeared in number 26, December 19, 1995 of Proc. Natl. Acad. Sci. USA (92, 11965-11969), the authors request that the following be noted. In the Results section under "Enzymatic Properties," 104 and 19 iM-1 should be 1.04 x 104 and 1.9 x 103 M-~, respectively. In the last column of Table 1, 22, 104, 27, and 19 jM-1 should be 2.2 x 103, 1.04 x 104, 2.7 x 103, and 1.9 x 103 M-1 respectively. The correct table is shown below.

Table 1. ATPase activities of wild-type and mutant HMMs

MgATPase, nmol of Pi

per min per mg of

protein Actin-activated MgATPase

High Low Vmax, nmol of Pi per Ka, HMM salt salt min per mg M-1 X 10-3

Wild-type -kinase 3.7 1.3 76 2.2 +kinase 3.2 637 10.4

Mutant -kinase 4.4 2.7 49 2.7 +kinase 5.8 65 1.9

Vmax is the maximum actin-activated ATPase activity of HMM and Ka is the apparent binding constant for HMM to actin, which is defined to be the reciprocal of the apparent Km from the double reciprocal plots (Fig. 4). To phosphorylate the regulatory light chain of HMM, myosin light chain kinase, calmodulin, and Ca2+ were added to the ATPase assay medium. -, Not measured.

Biochemistry. In the article "Cloning and characterization of four murine homeobox genes" by Alessandra Cecilia Roves- calli, Sadamitsu Asoh, and Marshall Nirenberg, which ap- peared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10691-10696), the following should be noted: The Genbank accession numbers for Uncx-4.1, OG-2, OG-9, OG- 12, OG-12a, and OG-12b were incorrect in the footnotes to the article. The correct order is as follows: Uncx-4.1: U65069, U65070; OG-2: U65067; OG-9: U65068; OG-12: U65071, U65072; OG-12a: U66918; and OG-12b: U67055.

15522 Corrections

Biochemistry. In the article "The putative actin-binding role of hydrophobic residues Trp546 and Phe547 in chicken gizzard heavy meromyosin" by Hirofumi Onishi, Manuel F. Morales, Kazuo Katoh, and Keigi Fujiwara, which appeared in number 26, December 19, 1995 of Proc. Natl. Acad. Sci. USA (92, 11965-11969), the authors request that the following be noted. In the Results section under "Enzymatic Properties," 104 and 19 iM-1 should be 1.04 x 104 and 1.9 x 103 M-~, respectively. In the last column of Table 1, 22, 104, 27, and 19 jM-1 should be 2.2 x 103, 1.04 x 104, 2.7 x 103, and 1.9 x 103 M-1 respectively. The correct table is shown below.

Table 1. ATPase activities of wild-type and mutant HMMs

MgATPase, nmol of Pi

per min per mg of

protein Actin-activated MgATPase

High Low Vmax, nmol of Pi per Ka, HMM salt salt min per mg M-1 X 10-3

Wild-type -kinase 3.7 1.3 76 2.2 +kinase 3.2 637 10.4

Mutant -kinase 4.4 2.7 49 2.7 +kinase 5.8 65 1.9

Vmax is the maximum actin-activated ATPase activity of HMM and Ka is the apparent binding constant for HMM to actin, which is defined to be the reciprocal of the apparent Km from the double reciprocal plots (Fig. 4). To phosphorylate the regulatory light chain of HMM, myosin light chain kinase, calmodulin, and Ca2+ were added to the ATPase assay medium. -, Not measured.

Biochemistry. In the article "Cloning and characterization of four murine homeobox genes" by Alessandra Cecilia Roves- calli, Sadamitsu Asoh, and Marshall Nirenberg, which ap- peared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10691-10696), the following should be noted: The Genbank accession numbers for Uncx-4.1, OG-2, OG-9, OG- 12, OG-12a, and OG-12b were incorrect in the footnotes to the article. The correct order is as follows: Uncx-4.1: U65069, U65070; OG-2: U65067; OG-9: U65068; OG-12: U65071, U65072; OG-12a: U66918; and OG-12b: U67055.

15522 Corrections

Biochemistry. In the article "The putative actin-binding role of hydrophobic residues Trp546 and Phe547 in chicken gizzard heavy meromyosin" by Hirofumi Onishi, Manuel F. Morales, Kazuo Katoh, and Keigi Fujiwara, which appeared in number 26, December 19, 1995 of Proc. Natl. Acad. Sci. USA (92, 11965-11969), the authors request that the following be noted. In the Results section under "Enzymatic Properties," 104 and 19 iM-1 should be 1.04 x 104 and 1.9 x 103 M-~, respectively. In the last column of Table 1, 22, 104, 27, and 19 jM-1 should be 2.2 x 103, 1.04 x 104, 2.7 x 103, and 1.9 x 103 M-1 respectively. The correct table is shown below.

Table 1. ATPase activities of wild-type and mutant HMMs

MgATPase, nmol of Pi

per min per mg of

protein Actin-activated MgATPase

High Low Vmax, nmol of Pi per Ka, HMM salt salt min per mg M-1 X 10-3

Wild-type -kinase 3.7 1.3 76 2.2 +kinase 3.2 637 10.4

Mutant -kinase 4.4 2.7 49 2.7 +kinase 5.8 65 1.9

Vmax is the maximum actin-activated ATPase activity of HMM and Ka is the apparent binding constant for HMM to actin, which is defined to be the reciprocal of the apparent Km from the double reciprocal plots (Fig. 4). To phosphorylate the regulatory light chain of HMM, myosin light chain kinase, calmodulin, and Ca2+ were added to the ATPase assay medium. -, Not measured.

Biochemistry. In the article "Cloning and characterization of four murine homeobox genes" by Alessandra Cecilia Roves- calli, Sadamitsu Asoh, and Marshall Nirenberg, which ap- peared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10691-10696), the following should be noted: The Genbank accession numbers for Uncx-4.1, OG-2, OG-9, OG- 12, OG-12a, and OG-12b were incorrect in the footnotes to the article. The correct order is as follows: Uncx-4.1: U65069, U65070; OG-2: U65067; OG-9: U65068; OG-12: U65071, U65072; OG-12a: U66918; and OG-12b: U67055.

15522 Corrections

Biochemistry. In the article "The putative actin-binding role of hydrophobic residues Trp546 and Phe547 in chicken gizzard heavy meromyosin" by Hirofumi Onishi, Manuel F. Morales, Kazuo Katoh, and Keigi Fujiwara, which appeared in number 26, December 19, 1995 of Proc. Natl. Acad. Sci. USA (92, 11965-11969), the authors request that the following be noted. In the Results section under "Enzymatic Properties," 104 and 19 iM-1 should be 1.04 x 104 and 1.9 x 103 M-~, respectively. In the last column of Table 1, 22, 104, 27, and 19 jM-1 should be 2.2 x 103, 1.04 x 104, 2.7 x 103, and 1.9 x 103 M-1 respectively. The correct table is shown below.

Table 1. ATPase activities of wild-type and mutant HMMs

MgATPase, nmol of Pi

per min per mg of

protein Actin-activated MgATPase

High Low Vmax, nmol of Pi per Ka, HMM salt salt min per mg M-1 X 10-3

Wild-type -kinase 3.7 1.3 76 2.2 +kinase 3.2 637 10.4

Mutant -kinase 4.4 2.7 49 2.7 +kinase 5.8 65 1.9

Vmax is the maximum actin-activated ATPase activity of HMM and Ka is the apparent binding constant for HMM to actin, which is defined to be the reciprocal of the apparent Km from the double reciprocal plots (Fig. 4). To phosphorylate the regulatory light chain of HMM, myosin light chain kinase, calmodulin, and Ca2+ were added to the ATPase assay medium. -, Not measured.

Biochemistry. In the article "Cloning and characterization of four murine homeobox genes" by Alessandra Cecilia Roves- calli, Sadamitsu Asoh, and Marshall Nirenberg, which ap- peared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10691-10696), the following should be noted: The Genbank accession numbers for Uncx-4.1, OG-2, OG-9, OG- 12, OG-12a, and OG-12b were incorrect in the footnotes to the article. The correct order is as follows: Uncx-4.1: U65069, U65070; OG-2: U65067; OG-9: U65068; OG-12: U65071, U65072; OG-12a: U66918; and OG-12b: U67055.

15522 Corrections

Biochemistry. In the article "The putative actin-binding role of hydrophobic residues Trp546 and Phe547 in chicken gizzard heavy meromyosin" by Hirofumi Onishi, Manuel F. Morales, Kazuo Katoh, and Keigi Fujiwara, which appeared in number 26, December 19, 1995 of Proc. Natl. Acad. Sci. USA (92, 11965-11969), the authors request that the following be noted. In the Results section under "Enzymatic Properties," 104 and 19 iM-1 should be 1.04 x 104 and 1.9 x 103 M-~, respectively. In the last column of Table 1, 22, 104, 27, and 19 jM-1 should be 2.2 x 103, 1.04 x 104, 2.7 x 103, and 1.9 x 103 M-1 respectively. The correct table is shown below.

Table 1. ATPase activities of wild-type and mutant HMMs

MgATPase, nmol of Pi

per min per mg of

protein Actin-activated MgATPase

High Low Vmax, nmol of Pi per Ka, HMM salt salt min per mg M-1 X 10-3

Wild-type -kinase 3.7 1.3 76 2.2 +kinase 3.2 637 10.4

Mutant -kinase 4.4 2.7 49 2.7 +kinase 5.8 65 1.9

Vmax is the maximum actin-activated ATPase activity of HMM and Ka is the apparent binding constant for HMM to actin, which is defined to be the reciprocal of the apparent Km from the double reciprocal plots (Fig. 4). To phosphorylate the regulatory light chain of HMM, myosin light chain kinase, calmodulin, and Ca2+ were added to the ATPase assay medium. -, Not measured.

Biochemistry. In the article "Cloning and characterization of four murine homeobox genes" by Alessandra Cecilia Roves- calli, Sadamitsu Asoh, and Marshall Nirenberg, which ap- peared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10691-10696), the following should be noted: The Genbank accession numbers for Uncx-4.1, OG-2, OG-9, OG- 12, OG-12a, and OG-12b were incorrect in the footnotes to the article. The correct order is as follows: Uncx-4.1: U65069, U65070; OG-2: U65067; OG-9: U65068; OG-12: U65071, U65072; OG-12a: U66918; and OG-12b: U67055.

Proc. Natl. Acad. Sci. USA 93 (1996)

Ecology. In the article "A meta-analysis of the freshwater cascade" by Michael T. Brett and Charles R. Goldman, which appeared in number 15, July 23, 1996, of Proc. Natl. Acad. Sci. USA (93, 7723-7726), the following correction should be noted. Due to a typesetter's error that occurred after the page proofs were corrected, the names of the first authors for nine references were omitted. The first authors for the appropriate references are (reference number and author name): 17, Andersson, G.; 22, Langeland, A.; 24, Ranta, E.; 28, Ham- bright, K. D.; 33, Drenner, R. W.; 35, Mazumder, A.; 36, Meijer, M. L.; 38, Lazzaro, X.; and 49, Christoffersen, K.

Immunology. The title of the article "An essential role for tyrosine kinase in the regulation of Bruton's B-cell apoptosis" by J. Simon Anderson, Mark Teutsch, Zengjun Dong, and Henry H. Wortis, which appeared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10966-10971), ap- peared incorrectly due to a printer's error. The correct title is "An essential role for Bruton's tyrosine kinase in the regula- tion of B-cell apoptosis."

Medical Sciences. In the article "Expression of the fructose transporter GLUT5 in human breast cancer" by S. Pilar Zamora-Le6n, David W. Golde, Ilona I. Concha, Coralia I. Rivas, Fernando Delgado-L6pez, Jos6 Baselga, Francisco Nu- alart, and Juan Carlos Vera, which appeared in number 5, March 5, 1996, of Proc. Natl. Acad. Sci. USA (93, 1847-1852), the authors request that the following be noted. "Our state- ment regarding the absence of GLUT5 immunoreactivity in normal breast tissue needs to be revised. Subsequent analysis done with more sensitive methodology revealed GLUT5 im- munoreactivity in some normal breast ductal epithelium. Our conclusion regarding the expression of GLUT5 in human breast as a specific manifestation of the neoplastic state is therefore premature."

Medical Sciences. In the article "Core binding factor 3-smooth muscle myosin heavy chain chimeric protein involved in acute myeloid leukemia forms unusual nuclear rod-like structures in transformed NIH 3T3 cells" by Cisca Wijmenga, Paula E. Gregory, Amitav Hajra, Evelin Schrock, Thomas Ried, Roland Eils, P. Paul Liu, and Francis S. Collins, which appeared in number 4, February 20, 1996, of Proc. Natl. Acad. Sci. USA (93, 1630-1635), the authors request that the following be noted. "The basic conclusion of this paper, that the CBF3-SMMHC chimeric protein forms nuclear rod-like structures in NIH 3T3 cells in which the protein is overexpressed, appears correct. However, the data shown in Figs. 3, 5, and 6, involving deletions of the chimeric protein, should be disregarded."

Proc. Natl. Acad. Sci. USA 93 (1996)

Ecology. In the article "A meta-analysis of the freshwater cascade" by Michael T. Brett and Charles R. Goldman, which appeared in number 15, July 23, 1996, of Proc. Natl. Acad. Sci. USA (93, 7723-7726), the following correction should be noted. Due to a typesetter's error that occurred after the page proofs were corrected, the names of the first authors for nine references were omitted. The first authors for the appropriate references are (reference number and author name): 17, Andersson, G.; 22, Langeland, A.; 24, Ranta, E.; 28, Ham- bright, K. D.; 33, Drenner, R. W.; 35, Mazumder, A.; 36, Meijer, M. L.; 38, Lazzaro, X.; and 49, Christoffersen, K.

Immunology. The title of the article "An essential role for tyrosine kinase in the regulation of Bruton's B-cell apoptosis" by J. Simon Anderson, Mark Teutsch, Zengjun Dong, and Henry H. Wortis, which appeared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10966-10971), ap- peared incorrectly due to a printer's error. The correct title is "An essential role for Bruton's tyrosine kinase in the regula- tion of B-cell apoptosis."

Medical Sciences. In the article "Expression of the fructose transporter GLUT5 in human breast cancer" by S. Pilar Zamora-Le6n, David W. Golde, Ilona I. Concha, Coralia I. Rivas, Fernando Delgado-L6pez, Jos6 Baselga, Francisco Nu- alart, and Juan Carlos Vera, which appeared in number 5, March 5, 1996, of Proc. Natl. Acad. Sci. USA (93, 1847-1852), the authors request that the following be noted. "Our state- ment regarding the absence of GLUT5 immunoreactivity in normal breast tissue needs to be revised. Subsequent analysis done with more sensitive methodology revealed GLUT5 im- munoreactivity in some normal breast ductal epithelium. Our conclusion regarding the expression of GLUT5 in human breast as a specific manifestation of the neoplastic state is therefore premature."

Medical Sciences. In the article "Core binding factor 3-smooth muscle myosin heavy chain chimeric protein involved in acute myeloid leukemia forms unusual nuclear rod-like structures in transformed NIH 3T3 cells" by Cisca Wijmenga, Paula E. Gregory, Amitav Hajra, Evelin Schrock, Thomas Ried, Roland Eils, P. Paul Liu, and Francis S. Collins, which appeared in number 4, February 20, 1996, of Proc. Natl. Acad. Sci. USA (93, 1630-1635), the authors request that the following be noted. "The basic conclusion of this paper, that the CBF3-SMMHC chimeric protein forms nuclear rod-like structures in NIH 3T3 cells in which the protein is overexpressed, appears correct. However, the data shown in Figs. 3, 5, and 6, involving deletions of the chimeric protein, should be disregarded."

Proc. Natl. Acad. Sci. USA 93 (1996)

Ecology. In the article "A meta-analysis of the freshwater cascade" by Michael T. Brett and Charles R. Goldman, which appeared in number 15, July 23, 1996, of Proc. Natl. Acad. Sci. USA (93, 7723-7726), the following correction should be noted. Due to a typesetter's error that occurred after the page proofs were corrected, the names of the first authors for nine references were omitted. The first authors for the appropriate references are (reference number and author name): 17, Andersson, G.; 22, Langeland, A.; 24, Ranta, E.; 28, Ham- bright, K. D.; 33, Drenner, R. W.; 35, Mazumder, A.; 36, Meijer, M. L.; 38, Lazzaro, X.; and 49, Christoffersen, K.

Immunology. The title of the article "An essential role for tyrosine kinase in the regulation of Bruton's B-cell apoptosis" by J. Simon Anderson, Mark Teutsch, Zengjun Dong, and Henry H. Wortis, which appeared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10966-10971), ap- peared incorrectly due to a printer's error. The correct title is "An essential role for Bruton's tyrosine kinase in the regula- tion of B-cell apoptosis."

Medical Sciences. In the article "Expression of the fructose transporter GLUT5 in human breast cancer" by S. Pilar Zamora-Le6n, David W. Golde, Ilona I. Concha, Coralia I. Rivas, Fernando Delgado-L6pez, Jos6 Baselga, Francisco Nu- alart, and Juan Carlos Vera, which appeared in number 5, March 5, 1996, of Proc. Natl. Acad. Sci. USA (93, 1847-1852), the authors request that the following be noted. "Our state- ment regarding the absence of GLUT5 immunoreactivity in normal breast tissue needs to be revised. Subsequent analysis done with more sensitive methodology revealed GLUT5 im- munoreactivity in some normal breast ductal epithelium. Our conclusion regarding the expression of GLUT5 in human breast as a specific manifestation of the neoplastic state is therefore premature."

Medical Sciences. In the article "Core binding factor 3-smooth muscle myosin heavy chain chimeric protein involved in acute myeloid leukemia forms unusual nuclear rod-like structures in transformed NIH 3T3 cells" by Cisca Wijmenga, Paula E. Gregory, Amitav Hajra, Evelin Schrock, Thomas Ried, Roland Eils, P. Paul Liu, and Francis S. Collins, which appeared in number 4, February 20, 1996, of Proc. Natl. Acad. Sci. USA (93, 1630-1635), the authors request that the following be noted. "The basic conclusion of this paper, that the CBF3-SMMHC chimeric protein forms nuclear rod-like structures in NIH 3T3 cells in which the protein is overexpressed, appears correct. However, the data shown in Figs. 3, 5, and 6, involving deletions of the chimeric protein, should be disregarded."

Proc. Natl. Acad. Sci. USA 93 (1996)

Ecology. In the article "A meta-analysis of the freshwater cascade" by Michael T. Brett and Charles R. Goldman, which appeared in number 15, July 23, 1996, of Proc. Natl. Acad. Sci. USA (93, 7723-7726), the following correction should be noted. Due to a typesetter's error that occurred after the page proofs were corrected, the names of the first authors for nine references were omitted. The first authors for the appropriate references are (reference number and author name): 17, Andersson, G.; 22, Langeland, A.; 24, Ranta, E.; 28, Ham- bright, K. D.; 33, Drenner, R. W.; 35, Mazumder, A.; 36, Meijer, M. L.; 38, Lazzaro, X.; and 49, Christoffersen, K.

Immunology. The title of the article "An essential role for tyrosine kinase in the regulation of Bruton's B-cell apoptosis" by J. Simon Anderson, Mark Teutsch, Zengjun Dong, and Henry H. Wortis, which appeared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10966-10971), ap- peared incorrectly due to a printer's error. The correct title is "An essential role for Bruton's tyrosine kinase in the regula- tion of B-cell apoptosis."

Medical Sciences. In the article "Expression of the fructose transporter GLUT5 in human breast cancer" by S. Pilar Zamora-Le6n, David W. Golde, Ilona I. Concha, Coralia I. Rivas, Fernando Delgado-L6pez, Jos6 Baselga, Francisco Nu- alart, and Juan Carlos Vera, which appeared in number 5, March 5, 1996, of Proc. Natl. Acad. Sci. USA (93, 1847-1852), the authors request that the following be noted. "Our state- ment regarding the absence of GLUT5 immunoreactivity in normal breast tissue needs to be revised. Subsequent analysis done with more sensitive methodology revealed GLUT5 im- munoreactivity in some normal breast ductal epithelium. Our conclusion regarding the expression of GLUT5 in human breast as a specific manifestation of the neoplastic state is therefore premature."

Medical Sciences. In the article "Core binding factor 3-smooth muscle myosin heavy chain chimeric protein involved in acute myeloid leukemia forms unusual nuclear rod-like structures in transformed NIH 3T3 cells" by Cisca Wijmenga, Paula E. Gregory, Amitav Hajra, Evelin Schrock, Thomas Ried, Roland Eils, P. Paul Liu, and Francis S. Collins, which appeared in number 4, February 20, 1996, of Proc. Natl. Acad. Sci. USA (93, 1630-1635), the authors request that the following be noted. "The basic conclusion of this paper, that the CBF3-SMMHC chimeric protein forms nuclear rod-like structures in NIH 3T3 cells in which the protein is overexpressed, appears correct. However, the data shown in Figs. 3, 5, and 6, involving deletions of the chimeric protein, should be disregarded."

Proc. Natl. Acad. Sci. USA 93 (1996)

Ecology. In the article "A meta-analysis of the freshwater cascade" by Michael T. Brett and Charles R. Goldman, which appeared in number 15, July 23, 1996, of Proc. Natl. Acad. Sci. USA (93, 7723-7726), the following correction should be noted. Due to a typesetter's error that occurred after the page proofs were corrected, the names of the first authors for nine references were omitted. The first authors for the appropriate references are (reference number and author name): 17, Andersson, G.; 22, Langeland, A.; 24, Ranta, E.; 28, Ham- bright, K. D.; 33, Drenner, R. W.; 35, Mazumder, A.; 36, Meijer, M. L.; 38, Lazzaro, X.; and 49, Christoffersen, K.

Immunology. The title of the article "An essential role for tyrosine kinase in the regulation of Bruton's B-cell apoptosis" by J. Simon Anderson, Mark Teutsch, Zengjun Dong, and Henry H. Wortis, which appeared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10966-10971), ap- peared incorrectly due to a printer's error. The correct title is "An essential role for Bruton's tyrosine kinase in the regula- tion of B-cell apoptosis."

Medical Sciences. In the article "Expression of the fructose transporter GLUT5 in human breast cancer" by S. Pilar Zamora-Le6n, David W. Golde, Ilona I. Concha, Coralia I. Rivas, Fernando Delgado-L6pez, Jos6 Baselga, Francisco Nu- alart, and Juan Carlos Vera, which appeared in number 5, March 5, 1996, of Proc. Natl. Acad. Sci. USA (93, 1847-1852), the authors request that the following be noted. "Our state- ment regarding the absence of GLUT5 immunoreactivity in normal breast tissue needs to be revised. Subsequent analysis done with more sensitive methodology revealed GLUT5 im- munoreactivity in some normal breast ductal epithelium. Our conclusion regarding the expression of GLUT5 in human breast as a specific manifestation of the neoplastic state is therefore premature."

Medical Sciences. In the article "Core binding factor 3-smooth muscle myosin heavy chain chimeric protein involved in acute myeloid leukemia forms unusual nuclear rod-like structures in transformed NIH 3T3 cells" by Cisca Wijmenga, Paula E. Gregory, Amitav Hajra, Evelin Schrock, Thomas Ried, Roland Eils, P. Paul Liu, and Francis S. Collins, which appeared in number 4, February 20, 1996, of Proc. Natl. Acad. Sci. USA (93, 1630-1635), the authors request that the following be noted. "The basic conclusion of this paper, that the CBF3-SMMHC chimeric protein forms nuclear rod-like structures in NIH 3T3 cells in which the protein is overexpressed, appears correct. However, the data shown in Figs. 3, 5, and 6, involving deletions of the chimeric protein, should be disregarded."

Proc. Natl. Acad. Sci. USA 93 (1996)

Ecology. In the article "A meta-analysis of the freshwater cascade" by Michael T. Brett and Charles R. Goldman, which appeared in number 15, July 23, 1996, of Proc. Natl. Acad. Sci. USA (93, 7723-7726), the following correction should be noted. Due to a typesetter's error that occurred after the page proofs were corrected, the names of the first authors for nine references were omitted. The first authors for the appropriate references are (reference number and author name): 17, Andersson, G.; 22, Langeland, A.; 24, Ranta, E.; 28, Ham- bright, K. D.; 33, Drenner, R. W.; 35, Mazumder, A.; 36, Meijer, M. L.; 38, Lazzaro, X.; and 49, Christoffersen, K.

Immunology. The title of the article "An essential role for tyrosine kinase in the regulation of Bruton's B-cell apoptosis" by J. Simon Anderson, Mark Teutsch, Zengjun Dong, and Henry H. Wortis, which appeared in number 20, October 1, 1996, of Proc. Natl. Acad. Sci. USA (93, 10966-10971), ap- peared incorrectly due to a printer's error. The correct title is "An essential role for Bruton's tyrosine kinase in the regula- tion of B-cell apoptosis."

Medical Sciences. In the article "Expression of the fructose transporter GLUT5 in human breast cancer" by S. Pilar Zamora-Le6n, David W. Golde, Ilona I. Concha, Coralia I. Rivas, Fernando Delgado-L6pez, Jos6 Baselga, Francisco Nu- alart, and Juan Carlos Vera, which appeared in number 5, March 5, 1996, of Proc. Natl. Acad. Sci. USA (93, 1847-1852), the authors request that the following be noted. "Our state- ment regarding the absence of GLUT5 immunoreactivity in normal breast tissue needs to be revised. Subsequent analysis done with more sensitive methodology revealed GLUT5 im- munoreactivity in some normal breast ductal epithelium. Our conclusion regarding the expression of GLUT5 in human breast as a specific manifestation of the neoplastic state is therefore premature."

Medical Sciences. In the article "Core binding factor 3-smooth muscle myosin heavy chain chimeric protein involved in acute myeloid leukemia forms unusual nuclear rod-like structures in transformed NIH 3T3 cells" by Cisca Wijmenga, Paula E. Gregory, Amitav Hajra, Evelin Schrock, Thomas Ried, Roland Eils, P. Paul Liu, and Francis S. Collins, which appeared in number 4, February 20, 1996, of Proc. Natl. Acad. Sci. USA (93, 1630-1635), the authors request that the following be noted. "The basic conclusion of this paper, that the CBF3-SMMHC chimeric protein forms nuclear rod-like structures in NIH 3T3 cells in which the protein is overexpressed, appears correct. However, the data shown in Figs. 3, 5, and 6, involving deletions of the chimeric protein, should be disregarded."

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