Provide the structure of the predominant form of the following amino acids at pH 6 and predict the migration towards anode or cathode during electrophoresis. 
Definitions:
Restrictive Immigration Laws
Laws designed to limit or control the flow of immigrants into a country, often based on quotas, nationality, or other criteria.
Reform Associations
Groups or organizations formed with the intent of advocating for changes and improvements in social, political, or economic conditions.
Itinerant Preachers
Individuals who travel from place to place to preach, often without a permanent church or congregation.
Pamphlets
Brief printed publications, often unbound, that provide information or argue a point on particular subjects.
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