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Bio Chem: Term 1- Exam 1 > Term 1- Lec 1&2- AA, pH, and Proteins > Flashcards

Term 1- Lec 1&2- AA, pH, and Proteins Flashcards

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1
Q

Which AA’s are Non-Polar

A

Glycine, Alanine, Leucine, Isoleucine, Valine, Methionine, Phenylalanine, Proline, Tryptophan

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2
Q

Which AA’s are Uncharged Polar

A

Serine, Threonine, Tyrosine, Glutamine, Asparagine

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3
Q

Which AA’s are Acidic Charged Polar

A

Glutamic Acid (Glutamate), Aspartic Acid (Aspartate)

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4
Q

Which AA’s are Basic Charged Polar

A

Histidine, Arginine, Lysine

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5
Q

Functional Group and Interactions of Glycine

A

Hydrogen (achiral). Hydrophobic interactions

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6
Q

Functional Group and Interactions of Alanine

A

Methyl. Hydrophobic interactions

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7
Q

Functional Group and Interactions of Leucine

A

Branched chain hydrocarbon. Hydrophobic interactions

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8
Q

Functional Group and Interactions of Isoleucine

A

Branched chain hydrocarbon. Hydrophobic interactions

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9
Q

Functional Group and Interactions of Valine

A

Branched chain hydrocarbon. Hydrophobic interactions

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10
Q

Functional Group and Interactions of Methionine

A

Contains S. Hydrophobic interactions

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11
Q

Functional Group and Interactions of Phenylalanine

A

Contains an Aromatic Ring. Hydrophobic interactions

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12
Q

Functional Group and Interactions of Tryptophan

A

Contains an Aromatic Ring. Hydrophobic interactions

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13
Q

Functional Group and Interactions of Proline

A

Is an Imino Acid. Hydrophobic interactions

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14
Q

What is the difference Methionine and Tryptophan from the rest of the Non-Polar AA’s?

A

They both contain a polar atom, but the polarity is masked by the surrounding hydrocarbons

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15
Q

Functional Group and Interactions of Serine

A

Hydroxyl. Hydrogen Bonding

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16
Q

Functional Group and Interactions of Threonine

A

Hydroxyl. Hydrogen Bonding

17
Q

Functional Group and Interactions of Tyrosine

A

Hydroxyl. Hydrogen Bonding

18
Q

Functional Group and Interactions of Glutamine

A

Carboxamide (-CONH2). Hydrogen Bonding

19
Q

Functional Group and Interactions of Asparagine

A

Carboxamide (-CONH2). Hydrogen Bonding

20
Q

Functional Group and Interactions of Cysteine

A

Sulfhydryl. Hydrogen Bonding and Disulfide Bonding

21
Q

Functional Group and Interactions of Glutamic Acid (Glutamate)

A

Carboxyl Group. Ionic Bonding and Hydrogen Bonding

22
Q

Functional Group and Interactions of Aspartic Acid (Aspartate)

A

Carboxyl Group. Ionic Bonding and Hydrogen Bonding

23
Q

Functional Group and Interactions of Histidine

A

Basic Groups. Ionic Bonding and Hydrogen Bonding

24
Q

Functional Group and Interactions of Arginine

A

Basic Groups. Ionic Bonding and Hydrogen Bonding

25
Q

Functional Group and Interactions of Lysine

A

Basic Groups. Ionic Bonding and Hydrogen Bonding

26
Q

Equation for pH

A

pH = -log( [H+] )

27
Q

Equation for Ka

A

Ka = ( [H+] • [A-] ) / [HA]

28
Q

Equation for pKa

A

pKa = -log( Ka )

29
Q

Henderson-Hasselbach Equation

A

pH = pKa + log( [A-] / [HA] )

30
Q

pH = pKa

A

50/50 [A-] & [HA]

31
Q

pH = pKa - 1

A

91% HA

32
Q

pH = pKa + 1

A

91% A-

33
Q

1º protein structure

A

AA sequence

34
Q

2º protein structure

A

∂-helices, ß-sheets, and Loops

35
Q

3º protein structure

A

Protein folding. Hydrophobic interactions and Covalent/Non-covalent bonding

36
Q

4º protein structure

A

Multiple polypeptide chains binding together to form the subunits of one active protein

37
Q

Super 2º structure- name and description

A

Motifs. Recognizable folding patterns involving 2+ 2º structures. i.e. ß-barrel

38
Q

Why are super 2º structures not 3º structures?

A

Motifs do not hold their structures by themselves. They require 3º structure to remain motifs.

Bio Chem: Term 1- Exam 1 (10 decks)

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