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2.
Eur J Biochem ; 200(1): 123-30, 1991 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-1879417

RESUMEN

The primary structure of hevamine, an enzyme with lysozyme/chitinase activity from Hevea brasiliensis latex, has been determined predominantly with conventional non-automatic methods. The positions of three disulfide bridges have been determined. The sequence has about 60% identity with that of a chitinase from cucumber and 95% with the N-terminal sequence of the lysozyme/chitinase of Parthenocissus quinquefolia. The half-cystine residues in hevein and cucumber chitinase are located at identical positions. Hevamine is a basic protein from the lutoids (vacuoles) of rubber latex and may have a role in plugging the latex vessels and cessation of latex flow. The differences in cellular location, charge properties and sequence between hevamine and cucumber chitinase are similar to those between class I and class II chitinases from tobacco and other plant species.


Asunto(s)
Quitinasas/química , Látex/química , Muramidasa/química , Plantas/enzimología , Secuencia de Aminoácidos , Disulfuros/química , Datos de Secuencia Molecular , Estructura Molecular , Fragmentos de Péptidos , Mapeo Peptídico , Proteínas de Plantas
3.
Temas Poblac ; 1(2): 51-5, 1991 Jun.
Artículo en Español | MEDLINE | ID: mdl-12284143

RESUMEN

PIP: This critique of the World Bank's role in developing country population programs begins with a description of a 1987 case in which an 80-year- old Bangladeshi man was persuaded to undergo vasectomy and then robbed of his incentive payment by the health agent. For over 20 years, the World Bank has pressured 3rd World governments to implement population control programs. Although there are divergent opinions within the World Bank, the most dominant is the neomalthusian view that the poor through their high fertility help perpetuate their own poverty. This view hides the real source of poverty in the Third World: the unequal distribution of resources within these countries and between the developed and developing countries. The World Bank has always been blind to the inequalities, and has associated with the elites of developing countries who monopolize the resources of their countries and thereby impede authentic development. Furthermore, the emphasis on population control distorts social policy and hinders the implementation of safe and voluntary family planning services. In many countries the World Bank has required governments to give greater priority to population control than to basic health services. It has pressured them to relax contraceptive prescription norms and has promoted the more effective methods without regard to proper use or side effects. In Bangladesh the World Bank has sponsored sterilization programs that rely on coercion and incentives. In that country of enormous inequities, 10% of landowners control over 50% of lands, while nearly half the population is landless and chronically underemployed. Political power is concentrated in the military government, which annually receives over 1.5 billion dollars in external aid. External aid primarily benefits the wealthy. 3/4 of the population are undernourished and less than 1/3 are literate or have access to basic health care. The poor of Bangladesh, as in many other countries, feel that their only source of security is to have many children, a significant proportion of whom will not survive. In rural Bangladesh, where chronic hunger and unemployment are rife, the incentives and the pressures of family planning and health workers were sufficient to persuade many persons to undergo sterilization. Payment of commissions to workers to promote sterilization has discouraged them from supplying adequate information about sterilization for fear of losing clients. Population from other donors and wide publicity about the abuses in the sterilization program and the high rates of regret among women undergoing sterilization only for the incentives have led to some modifications, but the World Bank has continued to exert pressure on the Bangladeshi government to develop fertility-control programs. The damaging effects of World Bank population programs can also be seen in Indonesia, Nepal, and other developing countries.^ieng


Asunto(s)
Coerción , Países en Desarrollo , Estudios de Evaluación como Asunto , Política de Planificación Familiar , Motivación , Política , Pobreza , Naciones Unidas , Asia , Bangladesh , Economía , Agencias Internacionales , Organizaciones , Política Pública , Factores Socioeconómicos
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