passages.id: split_1_test_3099_passage
passages.type: progene_text
passages.text: Comparison of the regions upstream of the uhpT transcription start site in E. coli and Salmonella typhimurium suggested the presence of four sequence elements that might be involved in promoter function : a typical - 10 region , a short inverted repeat centered at - 32 , a long inverted repeat centered at - 64 , and a cyclic AMP receptor protein - binding sequence centered at - 103 .