We next narrowed our literature search for gene function. A search of Bradi1g25180 did not yield any results, so we switched our focus to homologous proteins. Bradi1g25180 was searched on www.arabidopsis.org in order to find homologous proteins. There were twenty homologs that came up, but searches for them yielded no papers about function. Notable homologs that yielded no results about function include the following: two arabidopsis thaliana genes (AT4g21390 and AT1g61610), two Glycine max genes (GLYMA13g32242 and GLYMA15g07090), one Oryza sativa gene (OSJNBB0041B22), and one Sorghum bicolor gene (SB02G035940).
The B120 gene in Arabidopsis thaliana is AT4g21390, which is also known as T6K22.120 according to Uniprot. This gene is one of three genes hypothesized to potentially be the Arabidopsis thaliana counterpart to the S-locus receptor kinase (SRK) when compared to SRK in Arabidopsis lyrata (Kusaba et al. 2001). SRK is the female S-locus transmembrane protein expressed in the stigma. If it binds to the SRC protein expressed on pollen, the plant undergoes the self-incompatibility response and prevents seed formation.
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