Updated annotation (from data): exo-alpha-D-galacturonosidase for catabolism of rhamnogalacturonan I and polygalacturonate Rationale: Specifically important in carbon source Rhamnogalacturonan - from potato; carbon source polygalacturonic acid. Rhamnogalacturonan I is a polymer of D-galacturonate and L-rhamnose. This protein is 64% identical to BT4123, which is an exo-alpha-D-galacturonidase (PMC:PMC5784806). BT4187 is expected to be secreted, but no specific signal for protein export was identified by PSORT-b. Original annotation: exo-poly-alpha-D-galacturonosidase precursor (NCBI ptt file) Type 1: Protein-coding gene Located on scaffold 241, - strand, nucleotides 5,521,399 to 5,523,015 See nucleotide sequence around BT4187 or for all of scaffold 241