HEADSC 1qdv COMMNT S2C correlation file created: Sun Dec 28 02:47:26 EST 2003 COMMNT COMMNT If you use this database, please cite: COMMNT COMMNT Guoli Wang, Jonathan W. Arthur, and Roland L. Dunbrack, Jr. COMMNT "S2C: A database correlating sequence and atomic COMMNT coordinate numbering in the Protein Data Bank" COMMNT www.fccc.edu/research/labs/dubrack/s2c COMMNT Copyright (c) February 2000, April 2002. COMMNT COMMNT SEQCRD columns are as follows: COMMNT COMMNT Column Positions Item COMMNT 1 0-6 Record identifier COMMNT 2 8 Chain COMMNT 3 10 One letter residue code COMMNT 4 12-14 SEQRES three letter residue code COMMNT 5 16-18 ATOM three letter residue code COMMNT 6 20-24 SEQRES residue number COMMNT 7 26-31 ATOM residue number COMMNT 8 33 PDB secondary structure COMMNT 9 35 STRIDE secondary structure COMMNT 10 37-43 Error flags COMMNT COMMNT Secondary structrue annotation: COMMNT H: Helix E: Strand T: Turn COMMNT B: Bridge G: 310Helix C: Coil COMMNT SEQCRD A E GLU GLU 1 33 C C 4 SEQCRD A R ARG ARG 2 34 E E 4 SEQCRD A V VAL VAL 3 35 E E 4 SEQCRD A V VAL VAL 4 36 E E 4 SEQCRD A I ILE ILE 5 37 E E 4 SEQCRD A N ASN ASN 6 38 E E 4 SEQCRD A I ILE ILE 7 39 E E 4 SEQCRD A S SER SER 8 40 C T 45 SEQCRD A G GLY GLY 9 41 C T 45 SEQCRD A L LEU LEU 10 42 E E 4 SEQCRD A R ARG ARG 11 43 E E 4 SEQCRD A F PHE PHE 12 44 E E 4 SEQCRD A E GLU GLU 13 45 E E 4 SEQCRD A T THR THR 14 46 E E 4 SEQCRD A Q GLN GLN 15 47 E E 4 SEQCRD A L LEU LEU 16 48 H H 4 SEQCRD A K LYS LYS 17 49 H H 4 SEQCRD A T THR THR 18 50 H H 4 SEQCRD A L LEU LEU 19 51 H H 4 SEQCRD A A ALA ALA 20 52 H H 4 SEQCRD A Q GLN GLN 21 53 C T 45 SEQCRD A F PHE PHE 22 54 C T 45 SEQCRD A P PRO PRO 23 55 C T 45 SEQCRD A E GLU GLU 24 56 C T 45 SEQCRD A T THR THR 25 57 C T 45 SEQCRD A L LEU LEU 26 58 C G 45 SEQCRD A L LEU LEU 27 59 C G 45 SEQCRD A G GLY GLY 28 60 C G 45 SEQCRD A D ASP ASP 29 61 H C 45 SEQCRD A P PRO PRO 30 62 H H 4 SEQCRD A K LYS LYS 31 63 H H 4 SEQCRD A K LYS LYS 32 64 H H 4 SEQCRD A R ARG ARG 33 65 H H 4 SEQCRD A M MET MET 34 66 H G 45 SEQCRD A R ARG ARG 35 67 C G 45 SEQCRD A Y TYR TYR 36 68 C G 45 SEQCRD A F PHE PHE 37 69 E E 4 SEQCRD A D ASP ASP 38 70 E E 4 SEQCRD A P PRO PRO 39 71 C T 45 SEQCRD A L LEU LEU 40 72 C T 45 SEQCRD A R ARG ARG 41 73 C T 45 SEQCRD A N ASN ASN 42 74 C T 45 SEQCRD A E GLU GLU 43 75 E E 4 SEQCRD A Y TYR TYR 44 76 E E 4 SEQCRD A F PHE PHE 45 77 E E 4 SEQCRD A F PHE PHE 46 78 E E 4 SEQCRD A D ASP ASP 47 79 C C 4 SEQCRD A R ARG ARG 48 80 C C 4 SEQCRD A N ASN ASN 49 81 H C 45 SEQCRD A R ARG ARG 50 82 H H 4 SEQCRD A P PRO PRO 51 83 H H 4 SEQCRD A S SER SER 52 84 H H 4 SEQCRD A F PHE PHE 53 85 H H 4 SEQCRD A D ASP ASP 54 86 H H 4 SEQCRD A A ALA ALA 55 87 H H 4 SEQCRD A I ILE ILE 56 88 H H 4 SEQCRD A L LEU LEU 57 89 H H 4 SEQCRD A Y TYR TYR 58 90 H H 4 SEQCRD A Y TYR TYR 59 91 H H 4 SEQCRD A Y TYR TYR 60 92 H H 4 SEQCRD A Q GLN GLN 61 93 H H 4 SEQCRD A S SER SER 62 94 H H 4 SEQCRD A G GLY GLY 63 95 C T 45 SEQCRD A G GLY GLY 64 96 C T 45 SEQCRD A R ARG ARG 65 97 C T 45 SEQCRD A L LEU LEU 66 98 C C 4 SEQCRD A R ARG ARG 67 99 C C 4 SEQCRD A R ARG ARG 68 100 C C 4 SEQCRD A P PRO PRO 69 101 C T 45 SEQCRD A V VAL VAL 70 102 C T 45 SEQCRD A N ASN ASN 71 103 C T 45 SEQCRD A V VAL VAL 72 104 C T 45 SEQCRD A P PRO PRO 73 105 H C 45 SEQCRD A L LEU LEU 74 106 H H 4 SEQCRD A D ASP ASP 75 107 H H 4 SEQCRD A I ILE ILE 76 108 H H 4 SEQCRD A F PHE PHE 77 109 H H 4 SEQCRD A S SER SER 78 110 H H 4 SEQCRD A E GLU GLU 79 111 H H 4 SEQCRD A E GLU GLU 80 112 H H 4 SEQCRD A I ILE ILE 81 113 H H 4 SEQCRD A R ARG ARG 82 114 H H 4 SEQCRD A F PHE PHE 83 115 H H 4 SEQCRD A Y TYR TYR 84 116 H H 4 SEQCRD A E GLU GLU 85 117 C C 4 SEQCRD A L LEU LEU 86 118 C C 4 SEQCRD A G GLY GLY 87 119 H C 45 SEQCRD A E GLU GLU 88 120 H H 4 SEQCRD A E GLU GLU 89 121 H H 4 SEQCRD A A ALA ALA 90 122 H H 4 SEQCRD A M MET MET 91 123 H H 4 SEQCRD A E GLU GLU 92 124 H H 4 SEQCRD A M MET MET 93 125 H H 4 SEQCRD A F PHE PHE 94 126 H H 4 SEQCRD A R ARG ARG 95 127 H H 4 SEQCRD A E GLU GLU 96 128 H H 4 SEQCRD A D ASP ASP 97 129 H H 4 SEQCRD A E GLU GLU 98 130 H H 4 SEQCRD A G GLY GLY 99 131 H C 45 SEQCRD B E GLU GLU 1 33 C C 4 SEQCRD B R ARG ARG 2 34 E E 4 SEQCRD B V VAL VAL 3 35 E E 4 SEQCRD B V VAL VAL 4 36 E E 4 SEQCRD B I ILE ILE 5 37 E E 4 SEQCRD B N ASN ASN 6 38 E E 4 SEQCRD B I ILE ILE 7 39 E E 4 SEQCRD B S SER SER 8 40 C T 45 SEQCRD B G GLY GLY 9 41 C T 45 SEQCRD B L LEU LEU 10 42 E E 4 SEQCRD B R ARG ARG 11 43 E E 4 SEQCRD B F PHE PHE 12 44 E E 4 SEQCRD B E GLU GLU 13 45 E E 4 SEQCRD B T THR THR 14 46 E E 4 SEQCRD B Q GLN GLN 15 47 E E 4 SEQCRD B L LEU LEU 16 48 H H 4 SEQCRD B K LYS LYS 17 49 H H 4 SEQCRD B T THR THR 18 50 H H 4 SEQCRD B L LEU LEU 19 51 H H 4 SEQCRD B A ALA ALA 20 52 H H 4 SEQCRD B Q GLN GLN 21 53 H H 4 SEQCRD B F PHE PHE 22 54 C T 45 SEQCRD B P PRO PRO 23 55 C T 45 SEQCRD B E GLU GLU 24 56 C T 45 SEQCRD B T THR THR 25 57 C T 45 SEQCRD B L LEU LEU 26 58 C G 45 SEQCRD B L LEU LEU 27 59 C G 45 SEQCRD B G GLY GLY 28 60 C G 45 SEQCRD B D ASP ASP 29 61 H C 45 SEQCRD B P PRO PRO 30 62 H H 4 SEQCRD B K LYS LYS 31 63 H H 4 SEQCRD B K LYS LYS 32 64 H H 4 SEQCRD B R ARG ARG 33 65 H H 4 SEQCRD B M MET MET 34 66 H G 45 SEQCRD B R ARG ARG 35 67 C G 45 SEQCRD B Y TYR TYR 36 68 C G 45 SEQCRD B F PHE PHE 37 69 E E 4 SEQCRD B D ASP ASP 38 70 E E 4 SEQCRD B P PRO PRO 39 71 C T 45 SEQCRD B L LEU LEU 40 72 C T 45 SEQCRD B R ARG ARG 41 73 C T 45 SEQCRD B N ASN ASN 42 74 C T 45 SEQCRD B E GLU GLU 43 75 E E 4 SEQCRD B Y TYR TYR 44 76 E E 4 SEQCRD B F PHE PHE 45 77 E E 4 SEQCRD B F PHE PHE 46 78 E E 4 SEQCRD B D ASP ASP 47 79 C C 4 SEQCRD B R ARG ARG 48 80 C C 4 SEQCRD B N ASN ASN 49 81 C C 4 SEQCRD B R ARG ARG 50 82 C C 4 SEQCRD B P PRO PRO 51 83 C H 45 SEQCRD B S SER SER 52 84 H H 4 SEQCRD B F PHE PHE 53 85 H H 4 SEQCRD B D ASP ASP 54 86 H H 4 SEQCRD B A ALA ALA 55 87 H H 4 SEQCRD B I ILE ILE 56 88 H H 4 SEQCRD B L LEU LEU 57 89 H H 4 SEQCRD B Y TYR TYR 58 90 H H 4 SEQCRD B Y TYR TYR 59 91 H H 4 SEQCRD B Y TYR TYR 60 92 H H 4 SEQCRD B Q GLN GLN 61 93 H H 4 SEQCRD B S SER SER 62 94 H H 4 SEQCRD B G GLY GLY 63 95 C T 45 SEQCRD B G GLY GLY 64 96 C T 45 SEQCRD B R ARG ARG 65 97 C T 45 SEQCRD B L LEU LEU 66 98 C C 4 SEQCRD B R ARG ARG 67 99 C C 4 SEQCRD B R ARG ARG 68 100 C C 4 SEQCRD B P PRO PRO 69 101 C T 45 SEQCRD B V VAL VAL 70 102 C T 45 SEQCRD B N ASN ASN 71 103 C T 45 SEQCRD B V VAL VAL 72 104 C T 45 SEQCRD B P PRO PRO 73 105 H C 45 SEQCRD B L LEU LEU 74 106 H H 4 SEQCRD B D ASP ASP 75 107 H H 4 SEQCRD B I ILE ILE 76 108 H H 4 SEQCRD B F PHE PHE 77 109 H H 4 SEQCRD B S SER SER 78 110 H H 4 SEQCRD B E GLU GLU 79 111 H H 4 SEQCRD B E GLU GLU 80 112 H H 4 SEQCRD B I ILE ILE 81 113 H H 4 SEQCRD B R ARG ARG 82 114 H H 4 SEQCRD B F PHE PHE 83 115 H H 4 SEQCRD B Y TYR TYR 84 116 H H 4 SEQCRD B E GLU GLU 85 117 H C 45 SEQCRD B L LEU LEU 86 118 C C 4 SEQCRD B G GLY GLY 87 119 H C 45 SEQCRD B E GLU GLU 88 120 H H 4 SEQCRD B E GLU GLU 89 121 H H 4 SEQCRD B A ALA ALA 90 122 H H 4 SEQCRD B M MET MET 91 123 H H 4 SEQCRD B E GLU GLU 92 124 H H 4 SEQCRD B M MET MET 93 125 H H 4 SEQCRD B F PHE PHE 94 126 H H 4 SEQCRD B R ARG ARG 95 127 H H 4 SEQCRD B E GLU GLU 96 128 H H 4 SEQCRD B D ASP ASP 97 129 H H 4 SEQCRD B E GLU GLU 98 130 H H 4 SEQCRD B G GLY GLY 99 131 H C 45 SEQCRD C E GLU GLU 1 33 C C 4 SEQCRD C R ARG ARG 2 34 E E 4 SEQCRD C V VAL VAL 3 35 E E 4 SEQCRD C V VAL VAL 4 36 E E 4 SEQCRD C I ILE ILE 5 37 E E 4 SEQCRD C N ASN ASN 6 38 E E 4 SEQCRD C I ILE ILE 7 39 E E 4 SEQCRD C S SER SER 8 40 C T 45 SEQCRD C G GLY GLY 9 41 C T 45 SEQCRD C L LEU LEU 10 42 E E 4 SEQCRD C R ARG ARG 11 43 E E 4 SEQCRD C F PHE PHE 12 44 E E 4 SEQCRD C E GLU GLU 13 45 E E 4 SEQCRD C T THR THR 14 46 E E 4 SEQCRD C Q GLN GLN 15 47 E E 4 SEQCRD C L LEU LEU 16 48 H H 4 SEQCRD C K LYS LYS 17 49 H H 4 SEQCRD C T THR THR 18 50 H H 4 SEQCRD C L LEU LEU 19 51 H H 4 SEQCRD C A ALA ALA 20 52 H H 4 SEQCRD C Q GLN GLN 21 53 C T 45 SEQCRD C F PHE PHE 22 54 C T 45 SEQCRD C P PRO PRO 23 55 C T 45 SEQCRD C E GLU GLU 24 56 C T 45 SEQCRD C T THR THR 25 57 C T 45 SEQCRD C L LEU LEU 26 58 C G 45 SEQCRD C L LEU LEU 27 59 C G 45 SEQCRD C G GLY GLY 28 60 C G 45 SEQCRD C D ASP ASP 29 61 H C 45 SEQCRD C P PRO PRO 30 62 H H 4 SEQCRD C K LYS LYS 31 63 H H 4 SEQCRD C K LYS LYS 32 64 H H 4 SEQCRD C R ARG ARG 33 65 H H 4 SEQCRD C M MET MET 34 66 H G 45 SEQCRD C R ARG ARG 35 67 C G 45 SEQCRD C Y TYR TYR 36 68 C G 45 SEQCRD C F PHE PHE 37 69 E E 4 SEQCRD C D ASP ASP 38 70 E E 4 SEQCRD C P PRO PRO 39 71 C T 45 SEQCRD C L LEU LEU 40 72 C T 45 SEQCRD C R ARG ARG 41 73 C T 45 SEQCRD C N ASN ASN 42 74 C T 45 SEQCRD C E GLU GLU 43 75 E E 4 SEQCRD C Y TYR TYR 44 76 E E 4 SEQCRD C F PHE PHE 45 77 E E 4 SEQCRD C F PHE PHE 46 78 E E 4 SEQCRD C D ASP ASP 47 79 C C 4 SEQCRD C R ARG ARG 48 80 C C 4 SEQCRD C N ASN ASN 49 81 H T 45 SEQCRD C R ARG ARG 50 82 H T 45 SEQCRD C P PRO PRO 51 83 H T 45 SEQCRD C S SER SER 52 84 H H 4 SEQCRD C F PHE PHE 53 85 H H 4 SEQCRD C D ASP ASP 54 86 H H 4 SEQCRD C A ALA ALA 55 87 H H 4 SEQCRD C I ILE ILE 56 88 H H 4 SEQCRD C L LEU LEU 57 89 H H 4 SEQCRD C Y TYR TYR 58 90 H H 4 SEQCRD C Y TYR TYR 59 91 H H 4 SEQCRD C Y TYR TYR 60 92 H H 4 SEQCRD C Q GLN GLN 61 93 H H 4 SEQCRD C S SER SER 62 94 H H 4 SEQCRD C G GLY GLY 63 95 C T 45 SEQCRD C G GLY GLY 64 96 C T 45 SEQCRD C R ARG ARG 65 97 C T 45 SEQCRD C L LEU LEU 66 98 C C 4 SEQCRD C R ARG ARG 67 99 C C 4 SEQCRD C R ARG ARG 68 100 C C 4 SEQCRD C P PRO PRO 69 101 C T 45 SEQCRD C V VAL VAL 70 102 C T 45 SEQCRD C N ASN ASN 71 103 C T 45 SEQCRD C V VAL VAL 72 104 C T 45 SEQCRD C P PRO PRO 73 105 H C 45 SEQCRD C L LEU LEU 74 106 H H 4 SEQCRD C D ASP ASP 75 107 H H 4 SEQCRD C I ILE ILE 76 108 H H 4 SEQCRD C F PHE PHE 77 109 H H 4 SEQCRD C S SER SER 78 110 H H 4 SEQCRD C E GLU GLU 79 111 H H 4 SEQCRD C E GLU GLU 80 112 H H 4 SEQCRD C I ILE ILE 81 113 H H 4 SEQCRD C R ARG ARG 82 114 H H 4 SEQCRD C F PHE PHE 83 115 H H 4 SEQCRD C Y TYR TYR 84 116 H H 4 SEQCRD C E GLU GLU 85 117 C C 4 SEQCRD C L LEU LEU 86 118 C C 4 SEQCRD C G GLY GLY 87 119 H C 45 SEQCRD C E GLU GLU 88 120 H H 4 SEQCRD C E GLU GLU 89 121 H H 4 SEQCRD C A ALA ALA 90 122 H H 4 SEQCRD C M MET MET 91 123 H H 4 SEQCRD C E GLU GLU 92 124 H H 4 SEQCRD C M MET MET 93 125 H H 4 SEQCRD C F PHE PHE 94 126 H H 4 SEQCRD C R ARG ARG 95 127 H H 4 SEQCRD C E GLU GLU 96 128 H H 4 SEQCRD C D ASP ASP 97 129 H H 4 SEQCRD C E GLU GLU 98 130 H H 4 SEQCRD C G GLY GLY 99 131 H C 45 SEQCRD D E GLU GLU 1 33 C C 4 SEQCRD D R ARG ARG 2 34 E E 4 SEQCRD D V VAL VAL 3 35 E E 4 SEQCRD D V VAL VAL 4 36 E E 4 SEQCRD D I ILE ILE 5 37 E E 4 SEQCRD D N ASN ASN 6 38 E E 4 SEQCRD D I ILE ILE 7 39 E E 4 SEQCRD D S SER SER 8 40 C T 45 SEQCRD D G GLY GLY 9 41 C T 45 SEQCRD D L LEU LEU 10 42 E E 4 SEQCRD D R ARG ARG 11 43 E E 4 SEQCRD D F PHE PHE 12 44 E E 4 SEQCRD D E GLU GLU 13 45 E E 4 SEQCRD D T THR THR 14 46 E E 4 SEQCRD D Q GLN GLN 15 47 E E 4 SEQCRD D L LEU LEU 16 48 H H 4 SEQCRD D K LYS LYS 17 49 H H 4 SEQCRD D T THR THR 18 50 H H 4 SEQCRD D L LEU LEU 19 51 H H 4 SEQCRD D A ALA ALA 20 52 H H 4 SEQCRD D Q GLN GLN 21 53 H H 4 SEQCRD D F PHE PHE 22 54 C T 45 SEQCRD D P PRO PRO 23 55 C T 45 SEQCRD D E GLU GLU 24 56 C T 45 SEQCRD D T THR THR 25 57 C T 45 SEQCRD D L LEU LEU 26 58 C T 45 SEQCRD D L LEU LEU 27 59 C T 45 SEQCRD D G GLY GLY 28 60 C T 45 SEQCRD D D ASP ASP 29 61 H T 45 SEQCRD D P PRO PRO 30 62 H H 4 SEQCRD D K LYS LYS 31 63 H H 4 SEQCRD D K LYS LYS 32 64 H H 4 SEQCRD D R ARG ARG 33 65 H H 4 SEQCRD D M MET MET 34 66 H G 45 SEQCRD D R ARG ARG 35 67 C G 45 SEQCRD D Y TYR TYR 36 68 C G 45 SEQCRD D F PHE PHE 37 69 E E 4 SEQCRD D D ASP ASP 38 70 E E 4 SEQCRD D P PRO PRO 39 71 C T 45 SEQCRD D L LEU LEU 40 72 C T 45 SEQCRD D R ARG ARG 41 73 C T 45 SEQCRD D N ASN ASN 42 74 C T 45 SEQCRD D E GLU GLU 43 75 E E 4 SEQCRD D Y TYR TYR 44 76 E E 4 SEQCRD D F PHE PHE 45 77 E E 4 SEQCRD D F PHE PHE 46 78 E E 4 SEQCRD D D ASP ASP 47 79 C C 4 SEQCRD D R ARG ARG 48 80 C C 4 SEQCRD D N ASN ASN 49 81 C C 4 SEQCRD D R ARG ARG 50 82 C H 45 SEQCRD D P PRO PRO 51 83 C H 45 SEQCRD D S SER SER 52 84 H H 4 SEQCRD D F PHE PHE 53 85 H H 4 SEQCRD D D ASP ASP 54 86 H H 4 SEQCRD D A ALA ALA 55 87 H H 4 SEQCRD D I ILE ILE 56 88 H H 4 SEQCRD D L LEU LEU 57 89 H H 4 SEQCRD D Y TYR TYR 58 90 H H 4 SEQCRD D Y TYR TYR 59 91 H H 4 SEQCRD D Y TYR TYR 60 92 H H 4 SEQCRD D Q GLN GLN 61 93 H H 4 SEQCRD D S SER SER 62 94 H H 4 SEQCRD D G GLY GLY 63 95 C T 45 SEQCRD D G GLY GLY 64 96 C T 45 SEQCRD D R ARG ARG 65 97 C T 45 SEQCRD D L LEU LEU 66 98 C C 4 SEQCRD D R ARG ARG 67 99 C C 4 SEQCRD D R ARG ARG 68 100 C C 4 SEQCRD D P PRO PRO 69 101 C T 45 SEQCRD D V VAL VAL 70 102 C T 45 SEQCRD D N ASN ASN 71 103 C T 45 SEQCRD D V VAL VAL 72 104 C T 45 SEQCRD D P PRO PRO 73 105 H C 45 SEQCRD D L LEU LEU 74 106 H H 4 SEQCRD D D ASP ASP 75 107 H H 4 SEQCRD D I ILE ILE 76 108 H H 4 SEQCRD D F PHE PHE 77 109 H H 4 SEQCRD D S SER SER 78 110 H H 4 SEQCRD D E GLU GLU 79 111 H H 4 SEQCRD D E GLU GLU 80 112 H H 4 SEQCRD D I ILE ILE 81 113 H H 4 SEQCRD D R ARG ARG 82 114 H H 4 SEQCRD D F PHE PHE 83 115 H H 4 SEQCRD D Y TYR TYR 84 116 H H 4 SEQCRD D E GLU GLU 85 117 C C 4 SEQCRD D L LEU LEU 86 118 C C 4 SEQCRD D G GLY GLY 87 119 H C 45 SEQCRD D E GLU GLU 88 120 H H 4 SEQCRD D E GLU GLU 89 121 H H 4 SEQCRD D A ALA ALA 90 122 H H 4 SEQCRD D M MET MET 91 123 H H 4 SEQCRD D E GLU GLU 92 124 H H 4 SEQCRD D M MET MET 93 125 H H 4 SEQCRD D F PHE PHE 94 126 H H 4 SEQCRD D R ARG ARG 95 127 H H 4 SEQCRD D E GLU GLU 96 128 H H 4 SEQCRD D D ASP ASP 97 129 H H 4 SEQCRD D E GLU GLU 98 130 H C 45 SEQCRD D G GLY GLY 99 131 C C 4 COMMNT S2CERR 1 0 No standard amino acid code S2CERR 2 0 SEQRES and ATOM residue names differ S2CERR 3 0 No ATOM record S2CERR 4 396 SEQRES and ATOM residue numbers differ S2CERR 5 118 PDB and STRIDE secondary structures differ S2CERR 6 0 PDB secondary structure is absent S2CERR 7 0 STRIDE secondary structure is absent COMMNT COMMNT Crystallographic technical parameters: PARAME method 'X-RAY DIFFRACTION' PARAME resolution 1.6 PARAME R-factor ? PARAME B-factor ? COMMNT COMMNT Reference database information: DATABA source: DATABA GB: AAA19867 (?) COMMNT DATABA mutation: