part_of part of part of results in transport across results in transport across transporter activity membrane transmembrane transporter activity uptake permease activity Reactome:R-HSA-6784436 molecular_function substrate-specific transporter activity GO:0005386 GO:0022892 GO:0022891 Reactome:R-HSA-6784434 GO:0015646 uptake transmembrane transporter activity GO:0022857 GO:0015563 substrate-specific transmembrane transporter activity Enables the transfer of a substance, usually a specific substance or a group of related substances, from one side of a membrane to the other. Reactome:R-HSA-1236947 Reactome:R-HSA-429036 Reactome:R-HSA-5638209 Reactome:R-HSA-5671707 transmembrane transport