One Molecule, Multiple Histories: Comparative Phylogenomics of Glutamate Metabolism, Transport and Receptor Families Across 89 Eukaryotic Proteomes

Human-anchored phylogenomics across 89 eukaryotic proteomes shows glutamate metabolism, transporter, and receptor families have distinct taxonomic distributions, with GRID found only in seven vertebrate species.

• Why it matters: Evolutionary histories of glutamate-linked enzymes, transporters, and receptor paralogues have lacked a shared, human-reference-anchored phylogenomic comparison across many eukaryotes.
• What they did: The authors traced human UniProt/Swiss-Prot-associated lineages across 89 proteomes using homology searches with sequence/domain filtering, maximum-likelihood trees with TBE and UFBoot, sequence-stability checks, and GeneRax duplication-loss reconciliation.
• The result: Numerous paralogue-associated duplications were mapped to early vertebrate, gnathostome, and osteichthyan ancestral nodes, while deeper transporter and receptor relationships stayed uncertain due to differing TBE versus UFBoot support.

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