The Erythropoietin Receptor is a homodimer, anchored in the
membrane. The membrane
portion of the molecule is missing. The homodimer binds the
Erythropoietin asymmetrically,
in fact what most likely happens is that the binding causes the
receptor to dimerize.
This benchmark case can be considered quasi-bound because we used the
bound complex
structure to superpose two unbound receptor molecules and thus simulate
the bound state of the
receptor.
NOTE THAT IN THE ALIGNMENTS BELOW, GAPS MOST LIKELY INDICATE
RESIDUES MISSING IN THE ELECTRON DENSITY.
Alignment: 1EER_A against 1BUY_A
Query=
(166 letters)
>1BUY_A
Length = 166
Score = 324 bits (831), Expect = 4e-94
Identities = 164/166 (98%), Positives = 164/166 (98%)
Query: 1 APPRLICDSRVLERYLLEAKEAEKITTGCAEHCSLNEKITVPDTKVNFYAWKRMEVGQQA 60
APPRLICDSRVLERYLLEAKEAEKITTGCAEHCSLNEKITVPDTKVNFYAWKRMEVGQQA
Sbjct: 1 APPRLICDSRVLERYLLEAKEAEKITTGCAEHCSLNEKITVPDTKVNFYAWKRMEVGQQA 60
Query: 61 VEVWQGLALLSEAVLRGQALLVKSSQPWEPLQLHVDKAVSGLRSLTTLLRALGAQKEAIS 120
VEVWQGLALLSEAVLRGQALLVKSSQPWEPLQLHVDKAVSGLRSLTTLLRALGAQKEAIS
Sbjct: 61 VEVWQGLALLSEAVLRGQALLVKSSQPWEPLQLHVDKAVSGLRSLTTLLRALGAQKEAIS 120
Query: 121 NSDAASAAPLRTITADTFRKLFRVYSNFLRGKLKLYTGEACRTGDR 166
DAASAAPLRTITADTFRKLFRVYSNFLRGKLKLYTGEACRTGDR
Sbjct: 121 PPDAASAAPLRTITADTFRKLFRVYSNFLRGKLKLYTGEACRTGDR 166
Alignment: 1EER_B against 1ERN_A
Query=
(213 letters)
>1ERN_A
Length = 207
Score = 403 bits (1035), Expect = e-117
Identities = 204/211 (96%), Positives = 204/211 (96%), Gaps = 5/211 (2%)
Query: 3 KFESKAALLAARGPEELLCFTERLEDLVCFWEEAASAGVGPGQYSFSYQLEDEPWKLCRL 62
KFESKAALLAA EELLCFTERLEDLVCFWEEAASAGVGPG YSFSYQLEDEPWKLCRL
Sbjct: 1 KFESKAALLAA---EELLCFTERLEDLVCFWEEAASAGVGPGNYSFSYQLEDEPWKLCRL 57
Query: 63 HQAPTARGAVRFWCSLPTADTSSFVPLELRVTAASGAPRYHRVIHINEVVLLDAPVGLVA 122
HQAPTARGAVRFWCSLPTADTSSFVPLELRVTAASGAPRYHRVIHINEVVLLDAPVGLVA
Sbjct: 58 HQAPTARGAVRFWCSLPTADTSSFVPLELRVTAASGAPRYHRVIHINEVVLLDAPVGLVA 117
Query: 123 RLADESGHVVLRWLPPPETPMTSHIRYEVDVSAGQGAGSVQRVEILEGRTECVLSNLRGR 182
RLADE GHVVLRWLPPPETPMTSHIRYEVDVSAG GAGSVQRVEILEGRTECVLSNLRGR
Sbjct: 118 RLADE-GHVVLRWLPPPETPMTSHIRYEVDVSAG-GAGSVQRVEILEGRTECVLSNLRGR 175
Query: 183 TRYTFAVRARMAEPSFGGFWSEWSEPVSLLT 213
TRYTFAVRARMAEPSFGGFWS WSEPVSLLT
Sbjct: 176 TRYTFAVRARMAEPSFGGFWSAWSEPVSLLT 206
Alignment: 1EER_C against 1ERN_B
Query=
(213 letters)
>1ERN_B
Length = 209
Score = 409 bits (1051), Expect = e-119
Identities = 205/211 (97%), Positives = 205/211 (97%), Gaps = 4/211 (1%)
Query: 3 KFESKAALLAARGPEELLCFTERLEDLVCFWEEAASAGVGPGQYSFSYQLEDEPWKLCRL 62
KFESKAALLAA EELLCFTERLEDLVCFWEEAASAGVGPG YSFSYQLEDEPWKLCRL
Sbjct: 1 KFESKAALLAA---EELLCFTERLEDLVCFWEEAASAGVGPGNYSFSYQLEDEPWKLCRL 57
Query: 63 HQAPTARGAVRFWCSLPTADTSSFVPLELRVTAASGAPRYHRVIHINEVVLLDAPVGLVA 122
HQAPTARGAVRFWCSLPTADTSSFVPLELRVTAASGAPRYHRVIHINEVVLLDAPVGLVA
Sbjct: 58 HQAPTARGAVRFWCSLPTADTSSFVPLELRVTAASGAPRYHRVIHINEVVLLDAPVGLVA 117
Query: 123 RLADESGHVVLRWLPPPETPMTSHIRYEVDVSAGQGAGSVQRVEILEGRTECVLSNLRGR 182
RLADESGHVVLRWLPPPETPMTSHIRYEVDVSAG GAGSVQRVEILEGRTECVLSNLRGR
Sbjct: 118 RLADESGHVVLRWLPPPETPMTSHIRYEVDVSAG-GAGSVQRVEILEGRTECVLSNLRGR 176
Query: 183 TRYTFAVRARMAEPSFGGFWSEWSEPVSLLT 213
TRYTFAVRARMAEPSFGGFWS WSEPVSLLT
Sbjct: 177 TRYTFAVRARMAEPSFGGFWSAWSEPVSLLT 207