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Influence of the size and protonation state of acidic residue 85 on the absorption spectrum and photoreaction of the bacteriorhodopsin chromophore Janos K. Lanyi :'. J6rg Tittor b. Gyiirgy Vfir6 "~. Giinther Krippahl t, and Dieter Oesterhel! h r~

I )¢ f , . r t . , < . t ~q Iqn ,tr,h~.'~ attd Ilt,;/dn ~,~ ~, I 'nil t'r~tt~ ~,f ("~dtfurt.a. Ire lit('. ( '.1 I I ~'l) atzd t h e ' ~l,t~-P/~ttuL ttt~ttmt t,;r Ilto~Jt;.% Sl, 707t~ 70.x2. 22 Macda..X.. h~a',a, T. ai;d "~ml.iza~a. "1'. (It;~II) Biochcmi,,tly 19, 3~2"~ 3N31. 2~ Milk'r. A. and Ocqcrhelt, D. (19g0) |]illchim. Biophys. Acta II)21L 5"7 n4. 2-I ,Mo~i [., Stern. I_J.. Marii. T.. ('hao. B,II. and Khorana. II.G. ( I uXX) Pmc, Nail. /l.cal.I. Sci. 1 l~,;"i g5, 414~- 4152. "~ M()~l'r,,. P('.. I,()]k'r. R I I . . ('hat. Q.. T-,cng, Y.W., T;lyh)L M. ,,ml Sh)cckCi'lius, ~g". (1979) liiochcmi,,tr$ IX, 4t()I)-4107. 26 ()c,,icrhch. I). and S1()eckenius. W. (1974) Melhod,~ Enzymol. 31, h67 (,7~. 27 ()lt,~. I1.. Marl(. 'IL. Ilolz. M.. Mogi. T., l.ind;lu, M., Khorana, II.(L and lteyri, M.P. f198q) I)roc. Nail. Acad. Sci. LISA 86, ~122~;- ~ 2"~2 2~ ()ltt~. II.. Marli, 1.. Ih~lz. M . MogL T., Stern, 1,.,I., Engel, F, Kil,mm;u H,(L and Ileyn. M P . (1091)) Proe. Nail. Acad. Sci. l I S A ,~7. It I,X-.1(222 2t~ Pellei. M,J,. Yudd. AP.. Nakanishi, K.. Iicnsehllan. R and Stoeckcnius, W (19771 Biochemisl~ 16, 1055 1950. 31i Rothschild. K..I., Za,eacski, M. and ("antorc. W.A. (IqXl) Biochem. Bioph~.s. Re,,. ('olnmun. 1(13..1,'.43 4X9. 31 Sc~ppa, J. anti ()eslci~hell_ I). (1989),t. Biol. ('hem. 264, 13043t 3g)4s 32 Soppa. ,1., ()lomb\ J., Slraub. J., ~illor, J., ,IVlee~,sen, S. and ()¢',lelhcll, !). (19~9).1. Biol. (']lcm, 264. 13049--130.%. 33 Stern. I_.J. Ahl, P I., Marli, T.. M,ogi, ']'., l)ui]aeh, M., Berowilz. S.. Roih~dfild, K. and Khorana, G. (19~91 Biochcmb, try 28. 11)035 101)42. 34 Stern. I..J. and Khorana, II.G. (191,19)J. Biol. ('hem. 264, 142(12142O8 35 Stoeckenius, W.. I,oAcr, R.tl. and BogovnolnL R.A. (1970) . 3 ,g "l Biochim. lily,phys. Acla •'~n~i ,1.-_78. 36 Subramaniam. S.. Marti. T. and Khorana, II.G. (19~)) Proc. Nail. Acad. Sci. USA ~7, 1013-1017. 37 "littur. J., St)ell. C.. Oe'qcrhdi. l).. Bull. II.-J. and Bamberg. E. (ICES*;) F.MBO J, X, 3477 34h2. 3S V~ir6, (L and L:m~i. J.K. (It;S~,t) Biophys. J. 5(~, !143-1151. 3~) V,'~rd, (;. and Ixmyi. J.K. (19t,ll~) IJiophys. J. 59. 3t3-322. 4(I V(m;. (;. and i.anyi. J.K. (I~tJl~l Hiochemislr~, 29. 224i-225 i. 41 Vfird, (i. ilPd I anyi. J.K. (1991}i []iochi-mi,~lry 2It 695g-6865. 42 Vdr(~, (,. and l,anyi. ,I.K. (1901) Biochemistry. 30. 5016-5022. 43 Zimanyi, I,. and I.anyi..I.K. (1987) Biophys. J. 52. I1i07-1I)13. 44 Ziru:h~$i, I,., Ornlo,,, P. ;.nd [.,u'iyi. J.K. (tglstil Billchcmisti3, 28. 1656- I t~f~I. 45 Zinuh~$i. 1,. Kcs~'ihc'lyi, I., and Lanyi, J.K (1089I IIi(~dlcmisil3' _& 51f>5 5172.

Influence of the size and protonation state of acidic residue 85 on the absorption spectrum and photoreaction of the bacteriorhodopsin chromophore.

The consequences of replacing Asp-85 with glutamate in bacteriorhodopsin, as expressed in Halobacterium sp. GRB, were investigated. Similarly to the i...
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