The gamma subunits in bound and unbound structures are different
variants within
the G-protein gamma family. The sequence identity is quite
low, but the structures are
very similar. Most of the interaction occurs between the alpha
and beta subunits and
the gamma subunit was included for completeness.
NOTE THAT IN THE ALIGNMENTS BELOW, GAPS MOST LIKELY INDICATE
RESIDUES MISSING IN THE ELECTRON DENSITY.
Alignment: 1GP2_A against 1GIA_
Query=
(344 letters)
>1GIA_
Length = 310
Score = 625 bits (1612), Expect = 0.0
Identities = 310/310 (100%), Positives = 310/310 (100%)
Query: 30 VKLLLLGAGESGKSTIVKQMKIIHEAGYSEEECKQYKAVVYSNTIQSIIAIIRAMGRLKI 89
VKLLLLGAGESGKSTIVKQMKIIHEAGYSEEECKQYKAVVYSNTIQSIIAIIRAMGRLKI
Sbjct: 1 VKLLLLGAGESGKSTIVKQMKIIHEAGYSEEECKQYKAVVYSNTIQSIIAIIRAMGRLKI 60
Query: 90 DFGDAARADDARQLFVLAGAAEEGFMTAELAGVIKRLWKDSGVQACFNRSREYQLNDSAA 149
DFGDAARADDARQLFVLAGAAEEGFMTAELAGVIKRLWKDSGVQACFNRSREYQLNDSAA
Sbjct: 61 DFGDAARADDARQLFVLAGAAEEGFMTAELAGVIKRLWKDSGVQACFNRSREYQLNDSAA 120
Query: 150 YYLNDLDRIAQPNYIPTQQDVLRTRVKTTGIVETHFTFKDLHFKMFDVGGQRSERKKWIH 209
YYLNDLDRIAQPNYIPTQQDVLRTRVKTTGIVETHFTFKDLHFKMFDVGGQRSERKKWIH
Sbjct: 121 YYLNDLDRIAQPNYIPTQQDVLRTRVKTTGIVETHFTFKDLHFKMFDVGGQRSERKKWIH 180
Query: 210 CFEGVTAIIFCVALSDYDLVLAEDEEMNRMHESMKLFDSICNNKWFTDTSIILFLNKKDL 269
CFEGVTAIIFCVALSDYDLVLAEDEEMNRMHESMKLFDSICNNKWFTDTSIILFLNKKDL
Sbjct: 181 CFEGVTAIIFCVALSDYDLVLAEDEEMNRMHESMKLFDSICNNKWFTDTSIILFLNKKDL 240
Query: 270 FEEKIKKSPLTICYPEYAGSNTYEEAAAYIQCQFEDLNKRKDTKEIYTHFTCATDTKNVQ 329
FEEKIKKSPLTICYPEYAGSNTYEEAAAYIQCQFEDLNKRKDTKEIYTHFTCATDTKNVQ
Sbjct: 241 FEEKIKKSPLTICYPEYAGSNTYEEAAAYIQCQFEDLNKRKDTKEIYTHFTCATDTKNVQ 300
Query: 330 FVFDAVTDVI 339
FVFDAVTDVI
Sbjct: 301 FVFDAVTDVI 310
Alignment: 1GP2_B against 1TBG_D
Query=
(339 letters)
>1TBG_D
Length = 340
Score = 702 bits (1811), Expect = 0.0
Identities = 339/339 (100%), Positives = 339/339 (100%)
Query: 1 SELDQLRQEAEQLKNQIRDARKACADATLSQITNNIDPVGRIQMRTRRTLRGHLAKIYAM 60
SELDQLRQEAEQLKNQIRDARKACADATLSQITNNIDPVGRIQMRTRRTLRGHLAKIYAM
Sbjct: 2 SELDQLRQEAEQLKNQIRDARKACADATLSQITNNIDPVGRIQMRTRRTLRGHLAKIYAM 61
Query: 61 HWGTDSRLLVSASQDGKLIIWDSYTTNKVHAIPLRSSWVMTCAYAPSGNYVACGGLDNIC 120
HWGTDSRLLVSASQDGKLIIWDSYTTNKVHAIPLRSSWVMTCAYAPSGNYVACGGLDNIC
Sbjct: 62 HWGTDSRLLVSASQDGKLIIWDSYTTNKVHAIPLRSSWVMTCAYAPSGNYVACGGLDNIC 121
Query: 121 SIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQIVTSSGDTTCALWDIETGQQTTTFT 180
SIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQIVTSSGDTTCALWDIETGQQTTTFT
Sbjct: 122 SIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQIVTSSGDTTCALWDIETGQQTTTFT 181
Query: 181 GHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFTGHESDINAICFFPNGNAF 240
GHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFTGHESDINAICFFPNGNAF
Sbjct: 182 GHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFTGHESDINAICFFPNGNAF 241
Query: 241 ATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGRLLLAGYDDFNCNVWDALK 300
ATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGRLLLAGYDDFNCNVWDALK
Sbjct: 242 ATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGRLLLAGYDDFNCNVWDALK 301
Query: 301 ADRAGVLAGHDNRVSCLGVTDDGMAVATGSWDSFLKIWN 339
ADRAGVLAGHDNRVSCLGVTDDGMAVATGSWDSFLKIWN
Sbjct: 302 ADRAGVLAGHDNRVSCLGVTDDGMAVATGSWDSFLKIWN 340
Alignment: 1GP2_G against 1TBG_H
Query=
(54 letters)
>1TBG_H
Length = 65
Score = 43.5 bits (101), Expect = 2e-10
Identities = 19/46 (41%), Positives = 28/46 (60%)
Query: 9 VEQLKMEANIDRIKVSKAAADLMAYCEAHAKEDPLLTPVPASENPF 54
V+QLK E ++R+ VSK + Y E + EDPL+ +P +NPF
Sbjct: 19 VDQLKKEVTLERMLVSKCCEEFRDYVEERSGEDPLVKGIPEDKNPF 64