! (Supplementary Information) ! Decrypting Cryptochrome: Revealing the Molecular Identity of the Photoactivation Reaction ! Ilia A. Solov'yov, Tatiana Domratcheva, Abdul Rehaman Moughal Shahi, Klaus Schulten MASS 1 HAX 1.00800 H MASS 2 HX 1.00800 H MASS 3 HPX 1.00800 H MASS 4 CAX 12.01100 C MASS 5 CYX 12.01100 C MASS 6 CT2X 12.01100 C MASS 7 CPTX 12.01100 C MASS 8 NYX 14.00700 N AUTO ANGLES DIHE RESI TRPP 1.00 GROUP ATOM N NH1 -0.470 ! | HE3 ATOM HN H 0.310 ! HN-N | ATOM CA CT1 0.070 ! | HB1 CE3 ATOM HA HB 0.090 ! | | / \\ GROUP ! HA-CA--CB---CG-----CD2 CZ3--HZ3 ATOM CB CT2X 0.060 ! | | || || | ATOM HB1 HAX 0.060 ! | HB2 CD1 CE2 CH2--HH2 ATOM HB2 HAX 0.060 ! O=C / \ / \ // GROUP ! | HD1 NE1 CZ2 ATOM CG CYX -0.090 ! | | ATOM CD1 CAX 0.320 ! HE1 HZ2 ATOM HD1 HPX 0.170 ATOM NE1 NYX -0.630 ATOM HE1 HX 0.450 ATOM CE2 CPTX 0.450 ATOM CD2 CPTX 0.040 GROUP ATOM CE3 CAX -0.140 ATOM HE3 HPX 0.200 GROUP ATOM CZ3 CAX -0.210 ATOM HZ3 HPX 0.190 GROUP ATOM CZ2 CAX -0.360 ATOM HZ2 HPX 0.230 GROUP ATOM CH2 CAX 0.050 ATOM HH2 HPX 0.150 GROUP ATOM C C 0.510 ATOM O O -0.510 BOND CB CA CG CB CD2 CG NE1 CD1 BOND CZ2 CE2 BOND N HN N CA C CA C +N BOND CZ3 CH2 CD2 CE3 NE1 CE2 CA HA CB HB1 BOND CB HB2 CD1 HD1 NE1 HE1 CE3 HE3 CZ2 HZ2 BOND CZ3 HZ3 CH2 HH2 DOUBLE O C CD1 CG CE2 CD2 CZ3 CE3 CH2 CZ2 IMPR N -C CA HN C CA +N O CMAP -C N CA C N CA C +N DONOR HN N DONOR HE1 NE1 ACCEPTOR O C