ID4 GI:4504573 inhibitor of DNA binding 4, dominant negative helix-loop-helix protein 1 mkavspvrps grkapsgcgg gelalrclae hghslggsaa aaaaaaaarc 50 51 kaaeaaadep alclqcdmnd cysrlrrlvp tippnkkvsk veilqhvidy 100 101 ildlqlalet hpallrqppp papphhpagt cpaapprtpl talntdpaga 150 151 vnkqgdsilc r