Original Paper (Peer-reviewed)

83. Ishida Y,  Zhang C, Sato K, Ito M (2023) Physiological Importance and Role of Mg2+ in Improving Bacterial Resistance to Cesium, Frontiers in Microbiology, 14:1201121., doi: 10.3389/fmicb.2023.1201121

82. Ishida Y, Koretsune T, Ishiuchi E, TeshimaM, Ito M (2023) A magnesium transporter is involved in the cesium ion resistance of the high-concentration cesium ion-resistant bacterium Microbacterium sp. TS-1. Frontiers in Microbiology, 14: 1136514,  doi: 10.3389/fmicb.2023.1136514


81. Ito M and Hasunuma S (2022)Complete Genome Sequence of Bacillus sp. Strain TM2, Isolated from Ground Tetragnatha Spider Extract, Microbiology Resource Announcements, 11 (6), e0013022

80. Koretsune T, Ishida Y, Kaneda Y, Ishiuchi E, Teshima M, Marubashi N and Satoh K, and Ito M, (2022) Novel cesium resistance mechanism of alkaliphilic bacterium isolated from jumping spider ground extract, Frontiers in Microbiology, 13, Article number 841821

79. Ito M and Hasunuma S (2022)Complete genome sequence of Bacillus sp. strain NC3, isolated from Trichonephila spider ground extract, Microbiology Resource Announcements, 11 (2), e01110-21

78. Ito M,(2022)Life in alkali, Microbiology literacy knowledge framework, In press

77. Ito M, Shimizu T and Nakamura A (2021) Complete genome sequence of Kaistia sp. strain 32K, isolated from soil as a mixed single colony with Methylobacterium sp. strain ME121, Microbiology Resource Announcements10 (10): e00019-21.
76. Usui Y, Shimizu T, Nakamura A and Ito M, (2020) Metabolites Produced by Kaistia sp. 32K promote biofilm formation in coculture with Methylobacterium sp. ME121, Biology9(9), 287
75. Naganawa S, Ito M, (2020) MotP Subunit is critical for ion selectivity and evolution of a K -coupled flagellar motor, Biomolecules10 (5), 691
74. Fujinami S, Satoh K, Narumi I, Ito M, Draft genome sequence of calcium-dependent Novosphingobium sp. strain TCA1, isolated from a hot spring containing a high Concentration of calcium Ions, Microbiology Resource Announcements 9 (15), e00145-20
73. Usui Y, Wakabayashi Y, Shimizu T, Tahara YO, Miyata M, Nakamura A, Ito M, A factor produced by Kaistia sp. 32K accelerated the motility of Methylobacterium sp. ME121, Biomolecules 10 (4), 618
72. Miyata M, Robinson CR, Uyeda QPT, Fukumori Y, Fukushima S, Haruta S, Homma M, Inaba K, Ito M, Kaito C, Kato K, Kenri T, Kinoshita Y, Kojima S, Minamino T, Mori H, Nakamura S, Nakane D, Nakayama K, Nishiyama M, Shibata S, Shimabukuro K, Tamakoshi M, Taoka A, Tashiro Y, Tulum I, Wada H, Wakabayashi K,(2020) Tree of Motility – A Proposed History of Motility Systems in the Tree of Life –, Gene to Cells. 25, 6-21. doi:10.1111/gtc.12737
 71. Ito M, Krulwich TA,(2019) Editorial: For the future of Alkaliphiles: 50th anniversary year since the rediscovery of Alkaliphiles by Dr. Koki Horikoshi. Frontiers in Microbiology, 10:2017. doi: 10.3389/fmicb.2019.02017 [Front. Microbiol.]
70. Takahashi T, Krulwich TA, Ito M,(2018) A hydrophobic small protein, BpOF4_01690, is critical for alkaliphily of alkaliphilic Bacillus pseudofirmus OF4. Frontiers in Microbiology, 9: 01994. doi.org/10.3389/fmicb.2018.01994 [Front. Microbiol.]
69. Fujinami S, Ito M, (2018) The surface layer homology domain-containing proteins of alkaliphilic Bacillus pseudofirmus OF4 play an important role in alkaline adaptation via Ppeptidoglycan Ssynthesis. Frontiers in Microbiology, 9:0810.doi.org/10.3389/fmicb.2018.00810 [Front. Microbiol.]
68. Ito M, Morino M, Krulwich TA, (2017) Mrp Antiporters Have Important Roles in Diverse Bacteria and Archaea. Frontiers in Microbiology, 8:2325. doi: 10.3389/fmicb.2017.02325[Front. Microbiol.]
67. Terahara, N., Noguchi, Y., Nakamura, S., Kamiike, N., Ito, M., Namba, K., Minamino, T. (2017) Load-and polysaccharide-dependent activation of the Na -type MotPS stator in the Bacillus subtilis flagellar motor. Scientific Reports, 7, e46081doi:10.1038/srep46081[SciRep]
66. Takahashi Y, Ito M, (2017) Chapter 24, Ion Selectivity of the Flagellar Motors Derived from the Alkaliphilic Bacillus and Paenibacillus species, The Bacterial Flagellum: Methods and Protocols, Methods in Molecular Biology[Meth. in Mol. Biol.], 297-303
65. Ito M, Takahashi Y, (2017) Nonconventional cation-coupled flagellar motors derived from the alkaliphilic Bacillus and Paenibacillus species, Extremophiles, 21(1), 3-14[Extremophiles] , Review
64. Morino M, Ogoda S, Krulwich TA, Ito M, (2017) Differences in the phenotypic effects of mutations in homologous MrpA and MrpD subunits of the multi-subunit Mrp-type Na /H antiporter, Extremophiles, 21(1), 51-64 [Extremophiles]
63. Imazawa R, Takahashi Y, Aoki W, Sano M, Ito M, (2016) A novel type bacterial flagellar motor that can use divalent cations as a coupling ion, Scientific Reports, 6, e19773 doi:10.1038/srep19773 [SciRep]
62. Fujinami S, Takeda-Yano K, Onodera T, Satoh K, Shimizu T, Wakabayashi Y, Narumi I, Nakamura A, Ito M, Draft Genome Sequence of Methylobacterium sp. ME121, isolated from soil as a mixed single colony with Kaistia sp. 32K. Genome Announcements, 3(5), e01005-15  [GA]
61. Fujinami S, Oikawa Y, Araki T, Shinmura Y, Midorikawa R, Ishizaka H, Kato C, Horikoshi K, Ito M, Tamegai H, Genome Sequence of the Deep-Sea Denitrifier Pseudomonas sp. Strain MT-1 isolated from the Mariana Trench. Genome Announcements, 2(6), e01313-14 [GA]
60. DeCaen PG, Takahashi Y, Krulwich TA, Ito M, Clapham DE. (2014) Ionic selectivity and thermal adaptations within the voltage-gated sodium channel family of alkaliphilic Bacillus species of bacteria. eLife, e04387 DOI: http://dx.doi.org/10.7554/eLife.04387[eLife]
59. Attie O, Jayaprakash A, Shah H, Paulsen IT, Morino M, Takahashi Y, Narumi I, Sachidanandam R, Satoh K, Ito M, and Krulwichc TA. (2014) Draft Genome Sequence of Bacillus alcalophilus AV1934, a Classic Alkaliphile Isolated from Human Feces in 1934. Genome Announcements, 2(6), e01175-14 [GA]
58. Fujinami S, Takeda-Yano K, Onodera T, Satoh K, Sano M, Takahashi Y, Narumi I, Ito M. (2014) Draft Genome Sequence of Calcium-dependent Paenibacillus sp. Strain TCA20, Isolated from a Hot Spring Containing a High Concentration of Calcium Ions. Genome Announcements 2(5), e00866-14[GA]
57. Takahashi Y., Koyama K., Ito M. (2014) Suppressor mutants from MotB-D24E and MotS-D30E in the flagellar stator complex of Bacillus subtilis. Journal of General and Applied Microbiology, 60, 131-139
56. Fujinami S., Takeda K., Onodera T., Satoh S., Sano M., Narumi I., Ito M. (2014) Draft Genome Sequence of Potassium-Dependent Alkaliphilic Bacillus sp. Strain TS-2 isolated from a jumping spider. Genome Announcements, 2(3), e00458-14 [GA]
55. Takahashi Y., Ito M. (2014) Mutational analysis of charged residues in the cytoplasmic loops of MotA and MotP in the Bacillus subtilis flagellar motor. Journal of Biochemistry, 156 (4), 211-220 [J Biochem]
54. Morino M., Suzuki T., Ito M., Krulwich T.A. (2014) Purification and Functional Reconstitution of a Seven-Subunit Mrp-Type Na /H Antiporter. Journal of Bacteriology, 196(1) 28-35, doi: 10.1128/JB.01029-13[JB.asm]
53. Fujinami S., Takeda K., Onodera T., Satoh S., Sano M., Narumi I., Ito M. (2013) Draft Genome Sequence of Sodium-Independent Alkaliphilic Microbacterium sp. Strain TS-1. Genome Announcements, 1(6), e01043-131:doi:10.1128/genomeA.01043-13[GA, asm]
52. Terahara N., Sano M., and Ito M., (2012) A Bacillus flagellar motor that can use both Na and K as a coupling ion is converted by a single mutation to use only Na , PLOS ONE, 7(9) e46248 [PLOS ONE]
51. Morino M. and Ito M., (2012) Functional expression of the multi-subunit type calcium/proton antiporter from Thermomicrobium roseum, FEMS Microbiology Letters, 335(1), 26-30, [Wiley]
50. Janto B, Ahmed A, Ito M, Liu J, Hicks DB, Pagni S, Fackelmayer OJ, Smith TA, Earl J, Elbourne LD, Hassan K, Paulsen IT, Kolstø AB, Tourasse NJ, Ehrlich GD, Boissy R, Ivey DM, Li G, Xue Y, Ma Y, Hu FZ, Krulwich TA., Genome of alkaliphilic Bacillus pseudofirmus OF4 reveals adaptations that support the ability to grow in an external pH range from 7.5 to 11.4. Environmental Microbiology, 13(12), 3289–3309, December (2011)[Wiley]
49. Fujinami S., Sato T., and Ito M., The relationship between a coiled morphology and Mbl in alkaliphilic Bacillus halodurans C-125 at neutral pH values. Extrermophiles,15(5) 587-596 (2011) [Springer Link]
48. Morino M., Natsui S., Ono T., Swartz T.H. , Krulwich T.A. and Ito M. , Single site mutations in the hetero-oligomeric Mrp antiporter from alkaliphilic Bacillus pseudofirmus OF4 that affect Na /H antiport activity, sodium exclusion, individual Mrp protein levels or Mrp complex formation. Journal of Biological Chemistry, 285(40), 30942-30950 (2010) [JBC]
47. Fujisawa M, Wada Y, Tsuchiya T, and Ito M, Characterization of Bacillus subtilis YfkE (ChaA): a calcium-specific Ca2 /H antiporter of the CaCA family. Archives of Microbiology. 191(8), 649-657 (2009) [Springer Link]
46. Krulwich TA, Hicks D, and Ito M, Cation/proton antiporter complements of bacteria: why so large and diverse? Molecular Microbiology, 74(2), 257-260 (2009) Commentary
45. Fujinami, S., Terahara N., Krulwich, T.A., and Ito, M., Motility and chemotaxis in alkaliphilic Bacillus species. Future Microbiology, 4, 1137-1149 (2009) Review
44. Terahara N, Krulwich TA, and Ito M, Mutations alter the sodium versus proton use of a Bacillus clausii flagellar motor and confer dual ion use on Bacillus subtilis motors.Proc. Natl. Acad. Sci. USA, 105(38), 14359-14364 (2008)[PNAS]
43. Morino M, Natsui S, Swartz TH, Krulwich TA, and Ito M, Single gene deletions of mrpA-G and mrpE point mutations affect activity of the Mrp Na /H antiporter of alkaliphilic Bacillus and formation of hetero-oligomeric Mrp complexes. Journal of Bacteriology, 190(12), 4162-4172 (2008) [JB]
42. Fujinami S, Sato T, Trimmer JS, Spiller BW, Clapham DE, Krulwich TA, Kawagishi I, and Ito M, The voltage-gated Na channel NavBP co-localizes with methyl-accepting chemotaxis protein at cell poles of alkaliphilic Bacillus pseudofirmus OF4. Microbiology, 153 (12), 4027-4038 (2007) 「Faculty of 1000 Biology
41. Fujisawa M, Ito M, and Krulwich TA, Three 2-Component Transporters with Channel-like Properties have Monovalent Cation/Proton Antiport Activity. Proc. Natl. Acad. Sci. USA, 104 (33), 13289-13294 (2007) [PNAS]
40. Swartz TH, Ito M, Ohira T, Natsui S, Hicks DB, and Krulwich TA, Catalytic Properties of Staphylococcus aureus and Bacillus Members of the Secondary Cation- Proton Antiporter-3 (Mrp) Family are Revealed by an Optimized Assay in an Escherichia coli Host. Journal of Bacteriology, 189(8), 3081-3090 (2007) [JB]
39. Fujinami S, Terahara N, Lee S and Ito M, Na and flagella-dependent swimming of alkaliphilic Bacillus pseudofirmus OF4: a basis for poor motility at low pH and enhancement in viscous media in an “up-motile” variant. Archives of Microbiology, 187(3), 239-247 (2007) [Springer Link]
38. Terahara N, Fujisawa M, Powers B, Henkin TM, Krulwich TA and Ito M, An intergenic stem-loop mutation in the Bacillus subtilis ccpA-motPS operon increases motPS transcription and the MotPS contribution to motility. Journal of Bacteriology, 188(7):2701-2705 (2006) [JB, ASM]
37. Yamamoto M, Ishii A, Nogi Y, Inoue A, and Ito M, Isolation and characterization of novel denitrifying alkalithermophiles, AT-1 and AT-2. Extremophiles, 10, 421-426 (2006) [Springer Link]
36. Liu J, Xue Y, Wang Q, Wei Y, Swartz TH, Hicks DB, Ito M, Ma Y and Krulwich TA, The activity profile of the NhaD-type Na (Li )/H antiporter from the soda lake haloalkaliphile Alkalimonas amylolytica is adaptive for the extreme environment. Journal of Bacteriology,187(22), 7589-7595 (2005) [JB]
35. Ito M, Terahara N, Fujinami S, and Krulwich TA, Properties of motility in Bacillus subtilis powered by the H -coupled MotAB flagellar stator, Na -coupled MotPS or hybrid stators MotAS or MotPB. Journal of Molecular Biology, 352(2), 396-408 (2005) [Scinece Direct]
34. Fujisawa M, Kusumoto A, Wada Y, Tsuchiya T, and Ito M, NhaK, a novel monovalent cation/H antiporter of Bacillus subtilis. Archives of Microbiology, 183(6), 411-420 (2005) [Springer Link]
33. Swartz T.H., Ito M., D.B. Hicks, M. Nuqui, A.A.Guffanti, and Krulwich TA, The Mrp Na /H antiporter increases the activity of the malate:quinone oxidoreductase of an Escherichia coli respiratory mutant. Journal of Bacteriology, 187(1), 388-391 (2005) [JB]
32. Swartz, T.H., S. Ikewada, O. Ishikawa, M. Ito, and T.A. Krulwich, The Mrp system: A giant among monovalent cation/proton antiporters. Extremophiles, 9, 345-354 (2005) Review
31. Padan, E., E. Bibi, M. Ito, and T.A. Krulwich, Alkaline pH homeostasis in bacteria: New insights. Biochimica et Biophysica Acta,1717(2), 67-88 (2005) Review
30. Ito M., H. Xu, A.A.Guffanti, Y. Wei, L. Zvi, D.E. Clapham, and Krulwich TA, The voltage-gated Na channel NavBP has a role in motility, chemotaxis, and pH homeostasis of an alkaliphilic BacillusProc. Natl. Acad. Sci. USA, 101(29), 10566-10571 (2004) [PNAS]
29. Ito M., D.B. Hicks, T.M. Henkin, A.A.Guffanti, B.D. Powers, L. Zvi, K. Uematsu and Krulwich TA, MotPS is the stator-force generator for motility of alkaliphilic Bacillus and its homologue is a second functional Mot in Bacillus subtilisMolecular Microbiology, 53(4):1035-1049 (2004) [Wiley]
28. Fujisawa, M., Y. Wada, and Ito M., Modulation of the K efflux activity of Bacillus subtilis YhaU by YhaT and the C-terminal region of YhaS. FEMS Microbiology Letters, 231(2), 211-217 (2004) [PubMED]
27. Yi W.,T.W. Southworth, H. Kloster, Ito M., A. A. Guffanti, A. Moir, and Krulwich TA,: Mutational loss of a K and NH4 transporter affects the growth and endospore formation of alkaliphilic Bacillus pseudofirmus OF4. Journal of Bacteriology, 185, 5133-5147 (2003) [JB, ASM]
26. Ito M., and R. Aono: Decrease in cytoplasmic pH-homeostastatic activity of the alkaliphile Bacillus lentus C-125 by a cell wall defect. Bioscience, Biotechnology and Biochemistry, 66(1), 218-220 (2002) [J Stage]
25. Ito M., and M. Nagane.: High osmolarity and glycine treatment improve the electro-transformation efficiency of facultatively alkaliphilic Bacillus pseudofirmus OF4. Bioscience, Biotechnology and Biochemistry, 65(12), 2773-2775 (2001) [J Stage]
24. Ito M., A.A. Guffanti and Krulwich TA, Mrp-dependent Na /H antiporters of Bacillus exhibit characteristics that are unanticipated for completely secondary active transporters. FEBS Letters, 496, 117-120 (2001) [ScienceDirect]
23. Ito M., A.A. Guffanti, W. Wang, and Krulwich TA, Effect of nonpolar mutations in each of the seven Bacillus subtilis mrp genes suggest complex interactions among the gene products in support of Na and alkali but not cholate resistance. Journal of Bacteriology, 182, 5663-5670 (2000) [JB]
22. Wei, Y., A.A. Guffanti, Ito M., and Krulwich TA, Bacillus subtilis YqkI is a novel Malic/NaLactate antiporter that enhances growth on malate at low protonmotive force. Journal of Biological Chemistry, 275, 30287-30292 (2000) [JBC]
21. Wang, W., A.A.Guffanti, Y. Wei, Ito M., and Krulwich TA, Two type of Bacillus subtilis tetA(L) deletion strains reveal the physiological importance of TetA(L) in K acquisition as well as in Na , alkali, and tetracycline resistance. Journal of Bacteriology, 182,2088-2095 (2000) [JB]
20. Aono, R., Ito M., and T. Machida.: Contribution of the cell wall component teichuronopeptide to pH homeostasis and alkaliphily in the alkaliphile Bacillus lentus C-125. Journal of Bacteriology, 180, 6600-6606 (1999) [JB]
19. Ito M., A.A. Guffanti, B. Oudega, and Krulwich TA, mrp: a multigene, multifunctional locus in Bacillus subtilis with roles in resistance to cholate and to Na , and in pH homeostasis. Journal of Bacteriology, 180, 2394-2402 (1999) 
18. Gronstad, A., E. Jaroszewicz, Ito M., M.G. Sturr, Krulwich TA, and A.B. Kolsto.: Physical map of alkaliphilic Bacillus firmus OF4 and detection of a large endogenous plasmid. Extremophiles, 2, 447-453 (1998) PubMED[Springer Link]
17. Krulwich, T.A., M. Ito, R. Gilmour, D.B. Hicks, and A.A. Guffanti, pH homeostasis and ATP synthesis: studies of two processes that necessitate inward proton translocation in extremely alkaliphilic Bacillus species. Extremophiles, 2, 217-222 (1998) Review
16. Aono, R., Ito M., and K. Horikoshi.: Measurement of cytoplasmic pH of the alkaliphilic Bacillus lentus C-125 with a fluorescent pH probe. Microbiology, 143, 2531-2536 (1997) [Microbiology]
15. Ito M., A.A. Guffanti, J. Zemsky, D.M. Ivey, and Krulwich TA, Role of the nhaC-encoded Na /H antiporter of alkaliphilic Bacillus firmus OF4. Journal of Bacteriology, 179: 3851-3857 (1997) [JB]
14. Ito M., B. Cooperberg, and Krulwich TA, Diverse genes of alkaliphilic Bacillus firmus OF4 that complement K -uptake-deficient Escherichia coli include an ftsH homologue. Extremophiles, 1, 22-28 (1997) [Springer Link]  PubMED
13. Krulwich, T.A., Ito M., R. Gilmour, and A.A. Guffanti.: Mechanisms of cytoplasmic pH regulation in alkaliphilic strains of BacillusExtremophiles, 1, 163-169 (1997) Review
12. Krulwich, T.A., Ito M. R. Gilmour, M.G. Sturr, A.A. Guffanti, and D.B. Hicks. Energetic problems of extremely alkaliphilic aerobes. Biochimica et Biophysica Acta, 1275, 21-26 (1996) Review
11. Aono, R., Ito M., K. Joblin, and K. Horikoshi.: A high cell wall negative charge is necessary for the growth of the alkaliphile Bacillus lentus C-125 at elevated pH. Microbiology, 141, 2955-2964 (1995) [Microbiology]
10. Masahiro Ito, "Study on Cell Wall Acidic Polymers Involved in Alkaline Adaptation of Alkaliphilic Bacillus spp.", Ph.D. Thesis, Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology, 185 pages, March 1994
9. Ito M., K. Tabata, and R. Aono.: Construction of a new teichuronopeptide-defective derivative from Bacillus sp. C125 by cell fusion. Bioscience, Biotechnology and Biochemistry, 58, 2275-2277 (1994) [J Stage]
8. Aono, R. and Ito M., K. Joblin, and K. Horikoshi.: Genetic recombination after cell fusion of protoplasts from the facultative alkaliphilic Bacillus sp. C-125. Microbiology, 140, 3085-3090 (1994) [Microbiology]
7. Aono, R. Ito M., and K. Horikoshi. Occurrence of teichuronopeptide in cell walls of group 2 alkaliphilic Bacillus spp. Journal of General Microbiology, 139, 2739-2744 (1993) [Microbiology]
6. Aono, R. Ito M., and K. Horikoshi.: Regeneration of cell walls by protoplasts prepared from alkaliphilic strains of Bacillus spp. Bioscience, Biotechnology and Biochemistry, 57, 1597-1598 (1993) [J Stage]
5. Ito M., R. Aono, and K. Horikoshi. Identification of 2-amino-2,6-dideoxy-D-glucose (D-quinovosamine), isolated from the cell walls of the alkaliphilic Bacillus sp. Y-25, by 500-MHz 1H NMR spectroscopy. Carbohydrate Research, 242, 173-180 (1993) [Science directs]
4. Aono, R., Ito M., and K. Horikoshi.: Instability of the protoplast membrane of facultative alkaliphilic Bacillus sp. C-125 at alkaline pH values below the pH optimum for growth. Biochemical Journal, 285, 99-103 (1992) [Biochem J]
3. Aono, R., Ito M., A. Inoue, and K. Horikoshi.: Isolation of novel toluene-tolerant strain of Pseudomonas areruginosaBioscience, Biotechnology and Biochemistry, 56, 145-146 (1992)
2. Masahiro Ito, "Cell Wall of Alkaliphilic Bacillus spp.", Master's Thesis, Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology, 84 pages in total, March 1991

1. Nakano, Y., Ito M., E. Tanaka, and K. Kimura.: Identification of the reactive cysteinyl residue and ATP binding site in Bacillus cereusglutamine synthetase by chemical modification. Journal of Biochemistry, 107, 180-183 (1990) [J Stage]  
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