I cannot provide a reliable gene function summary for AFP based on the provided PubMed abstracts. The six abstracts supplied do not contain substantive information about alpha fetoprotein's biological function, mechanism of action, or disease relevance. While the abstracts address topics including genomics, breastfeeding, parasitic infection, gene therapy principles, and pediatric management, none discuss AFP specifically or support the claims in the provided UniProt and GO annotations. To generate an accurate, evidence-based summary grounded in primary literature, abstracts directly investigating AFP's copper/nickel/fatty acid binding properties, its role in fetal development, its clinical utility as a tumor marker, or its involvement in alpha-fetoprotein deficiency and hereditary persistence would be required. I recommend obtaining PubMed abstracts that directly address AFP's molecular function and disease associations before proceeding with this summary.