HRH4 GI:219842331 histamine H4 receptor isoform 2 1 mpdtnstinl slstrvtlaf fmslvafaim lgnalvilaf vvdknlrhrs 50 51 syfflnlais dffvvseswk degsecepgf fsewyilait sflefvipvi 100 101 lvayfnmniy wslwkrdhls rcqshpglta vssnicghsf rgrlssrrsl 150 151 sastevpasf hserqrrkss lmfssrtkmn sntiaskmgs fsqsdsvalh 200 201 qrehvellra rrlakslail lgvfavcwap yslftivlsf yssatgpksv 250 251 wyriafwlqw fnsfvnplly plchkrfqka flkifcikkq plpsqhsrsv 300 301 ss