proteínas fibrosas
TRANSCRIPT
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Proteínas fibrosas
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Queratina, rica en cisteína
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Triple hélice de colágeno ricas en glicina e histidina
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Formación de enlacesDe estabilización entreLisina e histidina
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Las estructuras terciarias contienen combinaciones de elementos de
estructuras secundarias• El agrupamiento de estructuras secundarias
se denominan dominios( superestructura secundaria) y se los clasifica en motivos
• Motivo βαβ: un hélice alfa conecta dos hojas plegadas beta
• Horquilla beta (β hairpin)• αα hélices antiparalelas se relaciones con
sus ejes inclinados
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Proteína de dos dominios 3-fosfato deshidrogenasa
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Se conserva la estructura mas que la secuencia
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Estructura cuaternaria de la hemoglobina
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TendenciaHidropáticaReunión de los Efectos hidrofobicos e hidrofilicosA mayor hidropaticidad mayor tendencia a ocupar zonas internas de la proteína
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Acumulación de proteína beta amiloide en Alzheimer
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