251
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Takano T, Dickerson RE, Schichman SA, Meyer TE. Crystal data, molecular dimensions and molecular symmetry in cytochrome oxidase from Pseudomonas aeruginosa. J Mol Biol 1979; 133:185-8. [PMID: 231108 DOI: 10.1016/0022-2836(79)90257-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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252
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Ambler RP, Meyer TE, Kamen MD. Anomalies in amino acid sequences of small cytochromes c and cytochromes c' from two species of purple photosynthetic bacteria. Nature 1979; 278:661-2. [PMID: 221823 DOI: 10.1038/278661a0] [Citation(s) in RCA: 76] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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253
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Ambler RP, Daniel M, Hermoso J, Meyer TE, Bartsch RG, Kamen MD. Cytochrome c2 sequence variation among the recognised species of purple nonsulphur photosynthetic bacteria. Nature 1979; 278:659-60. [PMID: 221822 DOI: 10.1038/278659a0] [Citation(s) in RCA: 133] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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254
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Tedro SM, Meyer TE, Kamen MD. Primary structure of a high potential, four-iron-sulfur ferredoxin from the photosynthetic bacterium Rhodospirillum tenue. J Biol Chem 1979; 254:1495-500. [PMID: 762147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The amino acid sequence of a high oxidation-reduction potential iron-sulfur protein (HiPIP) isolated from the purple photosynthetic bacterium Rhodospirillum tenue has been determined. This is the smallest of the HiPIP's, containing 63 residues, with only 3 residues apparently conserved in addition to the 4 cluster-binding cysteines. A minimum of four internal genetic gaps is postulated to align tenue high potential iron-sulfur protein with the previously known proteins. It is the most divergent of its class, with an average of only 25% identically matching residues in common with any of the other species.
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255
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Ambler RP, Daniel M, Meyer TE, Bartsch RG, Kamen MD. The amino acid sequence of cytochrome c' from the purple sulphur bacterium Chromatium vinosum. Biochem J 1979; 177:819-23. [PMID: 220951 PMCID: PMC1186446 DOI: 10.1042/bj1770819] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An amino acid sequence is proposed for the cytochrome c' from the photosynthetic purple sulphur bacterium Chromatium vinosum strain D. It is single polypeptide chain of 131 residues, with haem-attachment cysteine residues at positions 121 and 124. The results discredit an earlier report [Dus, Bartsch & Kamen (1962) J. Biol. Chem 237, 3083--3093] of a di-haem peptide sequence from this protein. The sequence belongs to the same class as the published Alcaligenes and Rhodospirillum rubrum cytochrome c' squences, but the resemblance is not close. Detailed evidence for the amino acid sequence of the protein has been deposited as Supplementary Publication SUP 50,093 (15 pp.) at the British Library Lending Division, Boston Spa, Wetherby, West Yorkshire LS23 7BQ, U.K., from whom copies may be obtained on the terms given in Biochem. J. (1978) 169, 5.
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256
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Pettigrew GW, Bartsch RG, Meyer TE, Kamen MD. Redox potentials of the photosynthetic bacterial cytochromes c2 and the structural bases for variability. BIOCHIMICA ET BIOPHYSICA ACTA 1978; 503:509-23. [PMID: 28760 DOI: 10.1016/0005-2728(78)90150-0] [Citation(s) in RCA: 76] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The cytochromes c2 of the Rhodospirillaceae show a much greater variation in redox potential and its pH dependence than the mitochondrial cytochromes c that have been studied. It is proposed that the range of redox potential for cytochromes c2 functioning as the immediate electron donor to photo-oxidised bacteriochlorophyll may be 345-395 mV at pH 5. Closely related cytochromes c2 with different redox potentials show patterns of amino acid substitution which are consistent with changes in hydrophobicity near the haem being at least a partial determinant of redox potential. More distantly related cytochromes are difficult to compare because of the large number of amino acid substitutions and the probability that there are subtle changes in overall peptide chain folding. The redox potential versus pH curves can be analysed in terms of either one ionisation in the oxidised form or two in the oxidised form and one in the reduced. The pK in the oxidised form at higher pH values can be correlated with the pK for the disappearance or shift of the near infrared absorption band located near 695 nm. The structural bases of these ionisations are not known but the possible involvement of the haem propionate residues is discussed.
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257
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Tedro SV, Meyer TE, Kamen MD. Primary structure of a high potential iron sulfur protein from a moderately halophilic denitrifying coccus. J Biol Chem 1977; 252:7826-33. [PMID: 914842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The occurrence of a specific high potential iron-sulfur protein in a halophilic, denitrifying coccus provisionally assigned to the genus Paracoccus has been confirmed through primary structure determination. This protein, known as "HiPIP", has been found previously only in photosynthetic bacteria. The sequence of this 71-residue protein is as similar to the HiPEPs from photosynthetic bacteria as they, in turn, are to one another (average number of identically matching residues is 38%). Paracoccus HiPIP is a highly acidic protein in accord with general observations on the proteins of halophilic bacteria. A possible explanation for its occurrence in Paracoccus is that gene transfer is involved.
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258
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Van Beeumen J, Ambler RP, Meyer TE, Kamen MO, Olson JM, Shaw EK. The amino acid sequences of the cytochromes c-555 from two green sulphur bacteria of the genus Chlorobium. Biochem J 1976; 159:757-69. [PMID: 188412 PMCID: PMC1164179 DOI: 10.1042/bj1590757] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Amino acid seauences are proposed for the cytochromes c-555 from Chlorobium thiosulphatophilum and from the Chlorobium limicola component of "Chloropseudomonas ethylica 2K". Each is a sincle polypeptide chain, the former of 86, the latter of 99 residues, and, when aligned so as to give the best match, 47 residues are common to the two sequences. The sequences show some resemblance to those of cytochromes c5 and f. The bacteriochlorophyll a-proteins were also isolated and purified, and their amino acid compositions compared (see the Appendix). There are significant differences in the compositions, but not as great as those found for the cytochromes c-555. The significance of these observations for the taxonomy of the Chlorobiaceae and for the further development of the comparative biochemistry of cytochrome c is discussed. Detailed evidence for the sequences of the cytochromes c-555 has been deposited as Supplementary Publication SUP 50073 (36 pages) at the British Library Lending Division, Boston Spa, Wetherby, West Yorkshire LS23 7BQ, U.K., from whom copies may be obtained on the terms given in Biochem. J. (1976) 153, 5.
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259
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Pettigrew GW, Meyer TE, Bartsch RG, Kamen MD. pH dependence of the oxidation-reduction potential of cytochrome c2. BIOCHIMICA ET BIOPHYSICA ACTA 1976; 430:197-208. [PMID: 6058 DOI: 10.1016/0005-2728(76)90079-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The pH dependence of the spectra and of the oxidation-reduction potential of three cytochromes c2, from Rhodopseudomonas capsulata, Rhodopseudomonas sphaeroides and Rhodomicrobium vannielii, were studied. A single alkaline pK was observed for the spectral changes in all three ferricytochromes. In Rps. capsulata cytochrome c2 this spectroscopic pK corresponds to the pK observed in the dependence of oxidation-reduction potential on pH. For the other two cytochromes the oxidation-reduction potential showed a complex dependency on pH which can be fitted to theoretical curves involving three ionizations. The third ionization corresponds to the ionization observed in the spectroscopic studies but the first two occur without changes in the visible spectra. The possible structural bases for these ionizations are discussed.
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260
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Ambler RP, Meyer TE, Kamen MD. Primary structure determination of two cytochromes c2: close similarity to functionally unrelated mitochondrial cytochrome C. Proc Natl Acad Sci U S A 1976; 73:472-5. [PMID: 174109 PMCID: PMC335931 DOI: 10.1073/pnas.73.2.472] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The amino-acid sequences of the cytochromes c2 from the photosynthetic non-sulfur purple bacteria Rhodomicrobium vannielii and Rhodopseudomonas viridis have been determined. Only a single residue deletion (at position 11 in horse cytochrome c) is necessary to align the sequences with those of mitochondrial cytochromes c. The overall sequence similarity between these cytochromes c2 and mitochondrial cytochromes c is closer than that between mitochondrial cytochromes c and the other cytochromes c2 of known sequence, and in the latter multiple insertions and deletions must be postulated before a match can be obtained. Nevertheless, these two cytochromes c2 show no better reactivity with the mitochondrial cytochrome c oxidase than do the less well-matched cytochromes c2. The bearing of these findings on possible evolutionary relationship between mitochondria and prokaryotes is discussed.
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261
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Tedro SM, Meyer TE, Kamen MD. Primary structure of a high potential iron-sulfur protein from the purple non-sulfur photosynthetic bacterium Rhodopseudomonas gelatinosa. J Biol Chem 1976; 251:129-36. [PMID: 1244346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The third amino acid sequence of a high potential iron-sulfur protein, that of the non-sulfur purple photosynthetic bacterium Rhodopseudomonas gelatinosa, has been determined. It consists of a single polypeptide chain of 74 amino acid residues, which is slightly smaller than the high potential iron-sulfur proteins from the sulfur purple bacteria Chromatium vinosum (85 residues) and Thiocapsa pfennigii (81 residues). The sequence of the gelatinosa protein is similar to the C. vinosum and T. pfennigii proteins with 38% and 37% identically matching residues, although six gaps are proposed for the comparison (the C. vinosum and T. pfennigii proteins have 44% identically matching residues out of 73 positions compared with only one 4-residue gap). Only 17 redisues, including the 4 cystein residues essential for binding the four-iron-sulfur chromophore, are invariant in the three known sequences. A discussion of the role of conserved residues in maintenance of the three-dimensional structure and in electron transport is presented.
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262
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Tedro SM, Meyer TE, Kamen MD. Primary structure of a high potential iron-sulfur protein from the purple non-sulfur photosynthetic bacterium Rhodopseudomonas gelatinosa. J Biol Chem 1976. [DOI: 10.1016/s0021-9258(17)33935-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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263
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Meyer TE, Ambler RP, Bartsch RG, Kamen MD. Amino acid sequence of cytochrome c' from the purple photosynthetic bacterium Rhodospirillum rubrum S1. J Biol Chem 1975; 250:8416-21. [PMID: 172499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The amino acid sequence of cytochrome c' from the purple photosynthetic bacterium Rhodospirillum rubrum S1 has been determined and is consistent with homology to cytochrome c' from the nonphotosynthetic bacterium Alcaligenes sp. NCIB 11015. There is 29% identity in the chosen alignment of these two proteins. R. rubrum cytochrome c' is composed of a single peptide chain of 126 amino acid residues with a single heme covalently bound near the COOH terminus. There is no sequence similarity to mitochondrial cytochrome c, except at the heme binding site.
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264
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Meyer TE, Ambler RP, Bartsch RG, Kamen MD. Amino acid sequence of cytochrome c' from the purple photosynthetic bacterium Rhodospirillum rubrum S1. J Biol Chem 1975. [DOI: 10.1016/s0021-9258(19)40774-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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265
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Pettigrew GW, Leaver JL, Meyer TE, Ryle AP. Purification, properties and amino acid sequence of atypical cytochrome c from two protozoa, Euglena gracilis and Crithidia oncopelti. Biochem J 1975; 147:291-302. [PMID: 170910 PMCID: PMC1165443 DOI: 10.1042/bj1470291] [Citation(s) in RCA: 86] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A basic cytochrome was isolated from the phytomastigophorean protozoan Euglena gracilis and a similar protein from the zoomastigophorean protozoan Crithidia oncopelti. In both cases chromatography on CM-cellulose in first the reduced and then the oxidized form proved to be an efficient means of purification. The two cytochromes can be classed in the cytochrome c family but they have certain atypical features. The alpha peak of the absorption spectrum is shifted towards the red and is asymmetrical. The pyridine ferrohaemochrome has an alpha-peak maximum intermediate between that of c-type cytochromes and proteins containing protohaem IX. The test for free vinyl groups was positive. The amino acid sequences of the two cytochromes were determined. Attention is drawn in the text to those parts of the evidence that are less satisfactory. Both sequences are homologous with the family of cytochrome c, but are unusual in having only one cysteine residue so that the haem is attached through only one thioether bond. Detailed evidence for the amino acid dequences of the two proteins has been deposited as Supplementary Publication SUP 50042 (70 pages) at the British Library (Lending Division) (formerly the National Lending Library for Science and Technology), Boston Spa, Wetherby, Yorks. LS23 7BQ, U.K., from whom copies can be obtained on the terms indicated in Biochem. J. (1975) 145, 5.
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266
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Tedro SM, Meyer TE, Kamen MD. Primary structure of a high potential iron-sulfur protein from the photosynthetic bacterium Thiocapsa pfennigii. J Biol Chem 1974; 249:1182-8. [PMID: 4814341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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267
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Meyer TE, Kennel SJ, Tedro SM, Kamen MD. Iron protein content of Thiocapsapfennigii, a purple sulfur bacterium of atypical chlorophyll composition. BIOCHIMICA ET BIOPHYSICA ACTA 1973; 292:634-43. [PMID: 4350259 DOI: 10.1016/0005-2728(73)90011-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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268
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Kennel SJ, Meyer TE, Kamen MD, Bartsch RG. On the monohene character of cytochromes c'. Proc Natl Acad Sci U S A 1972; 69:3432-5. [PMID: 4343972 PMCID: PMC389787 DOI: 10.1073/pnas.69.11.3432] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Interpretations of data bearing on structures of cytochromes cc'-a class of variant c-type heme proteins from bacteria-in support of a diheme-bearing single chain as a basic structural unit, appear to be invalid in the light of recent studies. These reveal that nearly all members of this class exist as dimers that can be dissociated into, if they do not already exist as, monoheme-bearing monomers. The particular case of the Chromatium protein, held to be the source of a peptic-"core" peptide containing two covalently-bonded heme groups, has been re-examined by preparation of tryptic and chymotryptic peptides derived from the heme-bearing region of the protein, as well as by repetition of experiments on peptic digestion, with more rigorous purification of the resultant peptides than was previously done. It is shown that this protein can also be dissociated into identical subunits, bearing a single heme prosthetic group, and accounting essentially for all its heme content. Thus, the previous terminology-cytochromes cc'-based on supposition of heme group heterogeneity, is inconsistent with these findings and should be replaced by cytochromes c'.
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270
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Meyer TE, Bartsch RG, Kamen MD. Cytochrome c 3 . A class of electron transfer heme proteins found in both photosynthetic and sulfate-reducing bacteria. BIOCHIMICA ET BIOPHYSICA ACTA 1971; 245:453-64. [PMID: 5003700 DOI: 10.1016/0005-2728(71)90162-9] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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271
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Meyer TE, Sharp JJ, Bartsch RG. Isolation and properties of rubredoxin from the photosynthetic green sulfur bacteria. BIOCHIMICA ET BIOPHYSICA ACTA 1971; 234:266-9. [PMID: 4327795 DOI: 10.1016/0005-2728(71)90081-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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272
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Meyer TE, Bartsch RG, Cusanovich MA, Mathewson JH. The cytochromes of Chlorobium thiosulfatophilum. BIOCHIMICA ET BIOPHYSICA ACTA 1968; 153:854-61. [PMID: 5660388 DOI: 10.1016/0005-2728(68)90012-1] [Citation(s) in RCA: 70] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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