Not essential for epidermal patterning and not redundant with STRUBBELIG. Expressed in seedlings, roots, stems, leaves, flowers and siliques. The protein kinase domain is predicted to be catalytically inactive. Plants do not show root phenotype alteration. Over-expression of SRF3 led to male-sterility in both cv. Landsberg and cv. Columbia. Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. An alternative isoform might be encoded by the 3'part of the transcript derived from AK228109. Wrong choice of CDS.