The primary structures of two leghemoglobin genes from soybean

Hyldig‐Nielsen, J. J.; Jensen, Erik Appel; Paludan, Kirsten; Wiborg, Ove; Garrett, Roger A.; Jørgensen, Poul; Marcker, Kjeld A.

doi:10.1093/nar/10.2.689

Cited by 161 publications

(67 citation statements)

References 19 publications

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“…One notorious example is the legume haemoglobin, supposed to be the result of horizontal transfer from animals by means of a viral carrier (Hyldig-Nielsen et al, 1982; but see Appleby et al, 1990). In such cases the sequence of the gene being studied is incongruent with that of the organism that carries it.…”

Section: Homology In Molecular and Morphological Data: Is There A Funmentioning

confidence: 99%

Concepts and Tests of Homology in the Cladistic Paradigm

1991

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Abstract-Logical equivalence between the notions of homology and synapomorphy is reviewed and supported. So-called transformational homology embodies two distinct logical components, one related to comparisons among different organisms and the other restricted to comparisons within the same organism. The former is essentially hierarchical in nature, thus being in fact a less obvious form of taxic homology. The latter is logically equivalent to so-called serial homology in a broad sense (including homonomy, mass homology or iterative homology) -Of three tests of homology proposed to date (similarity, conjunction and congruence) only congruence serves as a test in the strict sense. Similarity stands at a basic level in homology propositions, being the source of the homology conjecture in the first place. Conjunction is unquestionably an indicator of non-homology, but it is not specific about the pairwise comparison where non-homology is present, and depends on a specific scheme of relationship in order to refute a hypothesis of homology. The congruence test has been previously seen as an application of compatibility analysis-However, congruence is more appropriately seen as an expression of strict parsimony analysis. A general theoretical solution is proposed to determine evolution of characters with ambiguous distributions, based on the notion of maximization of . homology propositions. According to that notion, ambiguous character-state distributions should be resolved by an optimization that maximizes reversals relative to parallelisms. Notions of homology in morphology and molecular biology are essentially the same. The present tendency to adopt different terminologies for the two sources of data should be avoided, in order not to obscure the fundamental uniformity of the concept of homology in comparative biology.

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Section: Homology In Molecular and Morphological Data: Is There A Funmentioning

confidence: 99%

Concepts and Tests of Homology in the Cladistic Paradigm

1991

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“…DNA sequencing studies suggest that legume hemoglobins and animal globins share the same genetic origin and it has been suggested that the gene for legume hemoglobm was transferred to legumes from another eukaryote outside the plant kingdom, relatively recently in evolutionary history [6,7]. However, the identification of hemoglobin m Parasponra [3], Casaurrna and other nonlegume species [g-10] questions this proposal and suggests that hemoglobin genes may have persisted in many plant families since divergence of the plant and animal lines some 1000 million years ago [I ,7].…”

Section: Introductionmentioning

confidence: 99%

The amino acid sequence of hemoglobin I from Parasponia andersonii, a nonleguminous plant

et al. 1985

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The complete ammo acid sequence of the hemoglobm I from nitrogen-fixing root nodules of the nonlegummous plant, Paraspomu andersonu, has been determined This dimeric protein consists of two ldentlcal polypepttde chains of 155 ammo acids and shows extensive sequence homology with other hemoglobms Homology between the hemoglobm I of P andersomz and the leghemoglobms of lupm and soybean nodules IS 41 and 39%, respectively The predicted secondary structure of P andersonu hemoglobm I has a high content of a-hehx, except for the E-helix, srmrlar hehces were predicted as those m the leghemoglobms The close homology of the sequences provides evidence that this nonlegummous hemoglobm shares the same genetic orlgm as the legume and animal hemoglobms HemoglobmNonlegummous plant Paraspoma andersonuAmmo acrd sequence Sequence homolog> PredIcted secondary structure Genetrc orrgm

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“…The A+T content of the introns is similar to that in soybean proteins, but is considerably higher than those of non-plant species. Two CCAAT box-like sequences are located at positions -67 (CCAT) and -74 (CCAAAT), similar to those of soybean leghemoglobin genes [41]. Zein, the major storage prolamin storage protein of maize [42] is encoded by a family of highly similar genes bearing a TATA motif at -32, similar to that of most eukaryotes.…”

Section: Phaseolin Gene Structurementioning

confidence: 99%

Phaseolin: Structure and Evolution

Emani¹,

Hall²

2008

TOEVOLJ

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Abstract:Phaseolin is the salt-soluble glycoprotein or the group of polypeptides of the French bean (Phaseolus vulgaris L.) that account for some 50% of the total protein in mature bean seeds. It was one of the first plant proteins to be translated in vitro from mRNA and one of the first plant genes isolated. It was also the first developmentally regulated plant gene to be expressed in a heterologous plant species through Agrobacterium-mediated transformation. Studies on phaseolin have provided insight to many aspects of plant protein synthesis, from fundamental molecular mechanisms to practical goals such as the improvement of the French bean's nutritional quality. The present review is a comprehensive account of the structural and functional features of phaseolin that have implications regarding its evolution. Additionally, future directions in phaseolin evolutionary studies and suggestions regarding effective and safe biotechnological approaches for the nutritional improvement of French bean seed are outlined.

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The primary structures of two leghemoglobin genes from soybean

Cited by 161 publications

References 19 publications

Concepts and Tests of Homology in the Cladistic Paradigm

Concepts and Tests of Homology in the Cladistic Paradigm

The amino acid sequence of hemoglobin I from Parasponia andersonii, a nonleguminous plant

Phaseolin: Structure and Evolution

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