Interference by nickel(II) salts and their 5-methylimidazole-4-carboxylate coordination compounds on the chloroplast redox chain

B. King-Diaz; N. Barba-Behrens; J. Montes-Ayala; S. E. Castillo-Blum; C. Escartin-Guzman; R. Iglesias-Prieto; B. Lotina-Hennsen

doi:10.1515/znc-1998-11-1209

Interference by nickel(II) salts and their 5-methylimidazole-4-carboxylate coordination compounds on the chloroplast redox chain

B. King-Diaz
, N. Barba-Behrens
, J. Montes-Ayala
, S. E. Castillo-Blum
, C. Escartin-Guzman
, R. Iglesias-Prieto
, B. Lotina-Hennsen

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Nickel(II) salts and their coordination compounds with ethyl 5-methylimidazole-4-carboxylate (emizco), [Ni(emizco)₂Cl₂], [Ni(emizco)₂Br₂], [Ni(emizco)₂(H₂O)₂](NO₃)₂·H₂O, Ni(NO₃)₂, inhibit photosynthetic electron flow (basal, phosphorylating and uncoupled) and ATP-synthesis, therefore behave as Hill reaction inhibitors. Coordination compounds are more potent inhibitors than the salts. It was found that the target for NiCl₂; NiBr₂ and Ni(NO₃)₂ is at the b₆f level. On the other hand, the complexes [Ni(Emizco)₂Cl₂], [Ni(Emizco)₂Br₂] and [Ni(emizco)₂(H₂O)₂](NO₃)₂·H₂O binding sites are located at Q(B)(D1)-protein and b₆f level. Therefore, they have a common inhibition site located at b₆f avoiding the PQH₂ oxidation. The Q(B) inhibition site was corroborated by variable chlorophyll a fluorescence yield [V(j)]. The emizco ligand has no activity on photosynthetic electron flow.

Original language	English (US)
Pages (from-to)	987-994
Number of pages	8
Journal	Zeitschrift fur Naturforschung - Section C Journal of Biosciences
Volume	53
Issue number	11-12
DOIs	https://doi.org/10.1515/znc-1998-11-1209
State	Published - 1998

All Science Journal Classification (ASJC) codes

General Biochemistry, Genetics and Molecular Biology

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10.1515/znc-1998-11-1209

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King-Diaz, B., Barba-Behrens, N., Montes-Ayala, J., Castillo-Blum, S. E., Escartin-Guzman, C., Iglesias-Prieto, R., & Lotina-Hennsen, B. (1998). Interference by nickel(II) salts and their 5-methylimidazole-4-carboxylate coordination compounds on the chloroplast redox chain. Zeitschrift fur Naturforschung - Section C Journal of Biosciences, 53(11-12), 987-994. https://doi.org/10.1515/znc-1998-11-1209

@article{028f6b6ad70e4595849bf68fe7a58c4b,

title = "Interference by nickel(II) salts and their 5-methylimidazole-4-carboxylate coordination compounds on the chloroplast redox chain",

abstract = "Nickel(II) salts and their coordination compounds with ethyl 5-methylimidazole-4-carboxylate (emizco), [Ni(emizco)2Cl2], [Ni(emizco)2Br2], [Ni(emizco)2(H2O)2](NO3)2·H2O, Ni(NO3)2, inhibit photosynthetic electron flow (basal, phosphorylating and uncoupled) and ATP-synthesis, therefore behave as Hill reaction inhibitors. Coordination compounds are more potent inhibitors than the salts. It was found that the target for NiCl2; NiBr2 and Ni(NO3)2 is at the b6f level. On the other hand, the complexes [Ni(Emizco)2Cl2], [Ni(Emizco)2Br2] and [Ni(emizco)2(H2O)2](NO3)2·H2O binding sites are located at Q(B)(D1)-protein and b6f level. Therefore, they have a common inhibition site located at b6f avoiding the PQH2 oxidation. The Q(B) inhibition site was corroborated by variable chlorophyll a fluorescence yield [V(j)]. The emizco ligand has no activity on photosynthetic electron flow.",

author = "B. King-Diaz and N. Barba-Behrens and J. Montes-Ayala and Castillo-Blum, \{S. E.\} and C. Escartin-Guzman and R. Iglesias-Prieto and B. Lotina-Hennsen",

note = "Funding Information: This work was supported by grant DGAPA IN222096 and B. King-Diaz acknowledges the fellowship awarded by CONACyT, Mexico. We also thank RP Fierro for technical support.",

year = "1998",

doi = "10.1515/znc-1998-11-1209",

language = "English (US)",

volume = "53",

pages = "987--994",

journal = "Zeitschrift fur Naturforschung - Section C Journal of Biosciences",

issn = "0939-5075",

publisher = "Walter de Gruyter GmbH",

number = "11-12",

}

King-Diaz, B, Barba-Behrens, N, Montes-Ayala, J, Castillo-Blum, SE, Escartin-Guzman, C, Iglesias-Prieto, R & Lotina-Hennsen, B 1998, 'Interference by nickel(II) salts and their 5-methylimidazole-4-carboxylate coordination compounds on the chloroplast redox chain', Zeitschrift fur Naturforschung - Section C Journal of Biosciences, vol. 53, no. 11-12, pp. 987-994. https://doi.org/10.1515/znc-1998-11-1209

TY - JOUR

T1 - Interference by nickel(II) salts and their 5-methylimidazole-4-carboxylate coordination compounds on the chloroplast redox chain

AU - King-Diaz, B.

AU - Barba-Behrens, N.

AU - Montes-Ayala, J.

AU - Castillo-Blum, S. E.

AU - Escartin-Guzman, C.

AU - Iglesias-Prieto, R.

AU - Lotina-Hennsen, B.

N1 - Funding Information: This work was supported by grant DGAPA IN222096 and B. King-Diaz acknowledges the fellowship awarded by CONACyT, Mexico. We also thank RP Fierro for technical support.

PY - 1998

Y1 - 1998

N2 - Nickel(II) salts and their coordination compounds with ethyl 5-methylimidazole-4-carboxylate (emizco), [Ni(emizco)2Cl2], [Ni(emizco)2Br2], [Ni(emizco)2(H2O)2](NO3)2·H2O, Ni(NO3)2, inhibit photosynthetic electron flow (basal, phosphorylating and uncoupled) and ATP-synthesis, therefore behave as Hill reaction inhibitors. Coordination compounds are more potent inhibitors than the salts. It was found that the target for NiCl2; NiBr2 and Ni(NO3)2 is at the b6f level. On the other hand, the complexes [Ni(Emizco)2Cl2], [Ni(Emizco)2Br2] and [Ni(emizco)2(H2O)2](NO3)2·H2O binding sites are located at Q(B)(D1)-protein and b6f level. Therefore, they have a common inhibition site located at b6f avoiding the PQH2 oxidation. The Q(B) inhibition site was corroborated by variable chlorophyll a fluorescence yield [V(j)]. The emizco ligand has no activity on photosynthetic electron flow.

AB - Nickel(II) salts and their coordination compounds with ethyl 5-methylimidazole-4-carboxylate (emizco), [Ni(emizco)2Cl2], [Ni(emizco)2Br2], [Ni(emizco)2(H2O)2](NO3)2·H2O, Ni(NO3)2, inhibit photosynthetic electron flow (basal, phosphorylating and uncoupled) and ATP-synthesis, therefore behave as Hill reaction inhibitors. Coordination compounds are more potent inhibitors than the salts. It was found that the target for NiCl2; NiBr2 and Ni(NO3)2 is at the b6f level. On the other hand, the complexes [Ni(Emizco)2Cl2], [Ni(Emizco)2Br2] and [Ni(emizco)2(H2O)2](NO3)2·H2O binding sites are located at Q(B)(D1)-protein and b6f level. Therefore, they have a common inhibition site located at b6f avoiding the PQH2 oxidation. The Q(B) inhibition site was corroborated by variable chlorophyll a fluorescence yield [V(j)]. The emizco ligand has no activity on photosynthetic electron flow.

UR - https://www.scopus.com/pages/publications/0032443348

UR - https://www.scopus.com/pages/publications/0032443348#tab=citedBy

U2 - 10.1515/znc-1998-11-1209

DO - 10.1515/znc-1998-11-1209

M3 - Article

AN - SCOPUS:0032443348

SN - 0939-5075

VL - 53

SP - 987

EP - 994

JO - Zeitschrift fur Naturforschung - Section C Journal of Biosciences

JF - Zeitschrift fur Naturforschung - Section C Journal of Biosciences

IS - 11-12

ER -

Interference by nickel(II) salts and their 5-methylimidazole-4-carboxylate coordination compounds on the chloroplast redox chain

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