Säure-Base-Verhalten Flashcards

1
Q

Warum sind in Proteinen NH2- und COOH-Gruppen nicht relevant?

A

Nicht titrierbar, ungeladen

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2
Q

pK-Wert: Asparginsäure

A

frei:3,68 Pro:3,7-4 (sauer)

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3
Q

pK-Wert: Glutaminsäure

A

frei:4,25 Pro:4,2-4,5 (sauer)

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4
Q

pK-Wert: Histidin

A

frei:6 Pro:6,7-7,1 (basisch? -> sauer!)

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5
Q

pK-Wert: Cystein

A

frei:8,33 Pro:8,8-9,1 (semisauer)

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6
Q

pK-Wert: Thyrosin

A

frei:10,07 Pro:9,7-10,1 (semisauer)

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7
Q

pKWert: Lysin

A

frei:10,53 Pro:9,3-9,5 (basisch)

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8
Q

pK-Wert: Arginin

A

frei:12,48 (basisch)

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9
Q

Protein: basische Aminosäuren

A

Lysin, Arginin, Histidin

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10
Q

Protein: saure Aminosäuren

A

Asparginsäure, Glutaminsäure

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11
Q

Protein: weitere Aminosäuren mit ionisierbaren Resten

A

Cystein, Tyrosin

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