passages.id: split_5_test_1267_passage
passages.type: progene_text
passages.text: An open reading frame ( ORF ) of 870 bp encoding a deduced protein of 290 amino acids ( VHW-1 ) was revealed for the bla gene of strain W3B while an ORF of 849 bp encoding a 283-amino-acid protein ( VHH-1 ) was deduced for bla ( VHH-1 ) .