Protein

Association between single-nucleotide polymorphisms and milk production traits in buffalo

G. C. Venturini, Cardoso, D. F., Baldi, F., Freitas, A. C., Aspilcueta-Borquis, R. R., Santos, D. J. A., Camargo, G. M. F., Stafuzza, N. B., Albuquerque, L. G., and Tonhati, H., Association between single-nucleotide polymorphisms and milk production traits in buffalo, vol. 13, pp. 10256-10268, 2014.

The aim of this study was to identify single-nucleotide polymorphisms (SNPs) in buffaloes associated with milk yield and content, in addition to somatic cell scores based on the cross-species transferability of SNPs from cattle to buffalo. A total of 15,745 SNPs were analyzed, of which 1562 showed 1% significance and 4742 with 5% significance, which were associated for all traits studied.

Cassava interspecific hybrids with increased protein content and improved amino acid profiles

P. T. C. Gomes and Nassar, N. M. A., Cassava interspecific hybrids with increased protein content and improved amino acid profiles, vol. 12, pp. 1214-1222, 2013.

Cassava (Manihot esculenta) is a principal food for large populations of poor people in the tropics and subtropics. Its edible roots are poor in protein and lack several essential amino acids. Interspecific hybrids may acquire high protein characteristics from wild species. We analyzed 19 hybrids of M. esculenta with its wild relative, M. oligantha, for crude protein, amino acid profile, and total cyanide. Some hybrids produced roots with high protein content of up to 5.7%, while the common cultivar that we examined had just 2.3% crude protein.

Protein thermostability in Archaea and Eubacteria

S. Trivedi, Gehlot, H. S., and Rao, S. R., Protein thermostability in Archaea and Eubacteria, vol. 5. pp. 816-827, 2006.

In order to survive at high temperatures, thermophilic prokaryotes (Archaea and Eubacteria) adopt different strategies. Among several important contributing factors for stability of proteins are CG-rich codons, the ratio of charged amino acids compared to uncharged amino acids, ionic interactions, amino acid preferences and their distribution, post-translational modifications, and solute accumulation. However, these factors may differ from taxon to taxon, both within and between species depending upon the composition of proteins found in these organisms.

Cassava genetic resources and their utilization for breeding of the crop

N. M. A. Nassar, Cassava genetic resources and their utilization for breeding of the crop, vol. 6. pp. 1151-1168, 2007.

Wild cassava relatives are perennials and vary in growth pattern from nearly acaulescent subshrubs to small trees. They have been used as a source of useful characters such as high protein content, apomixis, resistance to mealybug and mosaic disease, and tolerance to drought. Indigenous clones are a potential source of β-carotene and lycopene. Apomixis genes have been transferred to the crop successfully through interspecific hybridization, and apomictic clones arising from these hybrids are now being grown at the Universidade de Brasília.

Preferred amino acids and thermostability

S. T. Farias and Bonato, M. Christina, Preferred amino acids and thermostability, vol. 2, pp. 383-393, 2003.

Most organisms grow at temperatures from 20 to 50°C, but some prokaryotes, including Archaea and Bacteria, are capable of withstanding higher temperatures, from 60 to >100°C. Their biomolecules, especially proteins, must be sufficiently stable to function under these extreme conditions; however, the basis for thermostability remains elusive.

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