HEADER HYDROLASE(ENDORIBONUCLEASE) 15-APR-92 2RN2 COMPND RIBONUCLEASE H (E.C.3.1.26.4) SOURCE (ESCHERICHIA COLI) AUTHOR K.KATAYANAGI,M.MIYAGAWA,M.MATSUSHIMA,M.ISHIKAWA,S.KANAYA, AUTHOR 2 H.NAKAMURA,M.IKEHARA,T.MATSUZAKI,K.MORIKAWA REVDAT 1 31-OCT-93 2RN2 0 JRNL AUTH K.KATAYANAGI,M.MIYAGAWA,M.MATSUSHIMA,M.ISHIKAWA, JRNL AUTH 2 S.KANAYA,H.NAKAMURA,M.IKEHARA,T.MATSUZAKI, JRNL AUTH 3 K.MORIKAWA JRNL TITL STRUCTURAL DETAILS OF RIBONUCLEASE H FROM JRNL TITL 2 ESCHERICHIA COLI AS REFINED TO AN ATOMIC JRNL TITL 3 RESOLUTION JRNL REF J.MOL.BIOL. V. 223 1029 1992 JRNL REFN ASTM JMOBAK UK ISSN 0022-2836 070 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH K.KATAYANAGI,M.MIYAGAWA,M.MATSUSHIMA,M.ISHIKAWA, REMARK 1 AUTH 2 S.KANAYA,M.IKEHARA,T.MATSUZAKI,K.MORIKAWA REMARK 1 TITL THREE-DIMENSIONAL STRUCTURE OF RIBONUCLEASE H REMARK 1 TITL 2 FROM E. COLI REMARK 1 REF NATURE V. 347 306 1990 REMARK 1 REFN ASTM NATUAS UK ISSN 0028-0836 006 REMARK 2 REMARK 2 RESOLUTION. 1.48 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM PROLSQ REMARK 3 AUTHORS KONNERT,HENDRICKSON REMARK 3 R VALUE 0.196 REMARK 3 RMSD BOND DISTANCES 0.017 ANGSTROMS REMARK 3 RMSD BOND ANGLE DISTANCES 0.036 ANGSTROMS REMARK 4 REMARK 4 MG2+ BINDING SITE WAS IDENTIFIED NEAR FOUR ACIDIC RESIDUES REMARK 4 (ASP 10, GLU 48, ASP 70 AND ASP 134), WHICH ARE COMPLETELY REMARK 4 CONSERVED AMONG 26 DIFFERENT RNASE H-LIKE SEQUENCES FROM REMARK 4 RETROVIRAL REVERSE TRANSCRIPTASES AND RETROVIRUS-LIKE REMARK 4 ENTITIES. MOREOVER, THREE ACIDIC RESIDUES, ASP 10, GLU 48, REMARK 4 AND ASP 70, HAVE PROVED TO BE ESSENTIAL FOR THE ACTIVITY, REMARK 4 IN COMBINATION WITH RESULTS OF SITE-DIRECTED MUTAGENESIS. REMARK 4 THE MAGNESIUM BINDING SITE IS PRESENTED AS SITE *MG* ON REMARK 4 *SITE* RECORDS BELOW. REMARK 5 REMARK 5 THE FOLLOWING IS THE CORRESPONDENCE BETWEEN THE SHEET REMARK 5 RECORDS IN THIS ENTRY AND THE BETA-STRANDS DEFINED IN THE REMARK 5 PAPER ENTITLED THREE-DIMENSIONAL STRUCTURE OF RIBONUCLEASE REMARK 5 H FROM E. COLI (K.KATAYANAGI ET AL. NATURE (1990) VOL.347 REMARK 5 PP 306-309). REMARK 5 STRAND 1 (RIGHT ARROW) BETA C REMARK 5 STRAND 2 (RIGHT ARROW) BETA B REMARK 5 STRAND 3 (RIGHT ARROW) BETA A REMARK 5 STRAND 4 (RIGHT ARROW) BETA D REMARK 5 STRAND 5 (RIGHT ARROW) BETA E REMARK 6 REMARK 6 BY REQUEST OF THE DEPOSITOR, THE PROTEIN DATA BANK HAS NOT REMARK 6 APPLIED THE IUPAC-IUB RECOMMENDATIONS REGARDING THE REMARK 6 DESIGNATION OF BRANCHES 1 AND 2 OF SIDE-CHAIN ATOMS IN REMARK 6 RESIDUES ARG, ASP, GLU, LEU, PHE, TYR, AND VAL TO THIS REMARK 6 ENTRY. REMARK 7 REMARK 7 THE COORDINATES PRESENTED IN PROTEIN DATA BANK ENTRY 1RNH REMARK 7 WERE DETERMINED SIMULTANEOUSLY BY ANOTHER GROUP AT 2.0 REMARK 7 ANGSTROMS RESOLUTION. SEQRES 1 155 MET LEU LYS GLN VAL GLU ILE PHE THR ASP GLY SER CYS SEQRES 2 155 LEU GLY ASN PRO GLY PRO GLY GLY TYR GLY ALA ILE LEU SEQRES 3 155 ARG TYR ARG GLY ARG GLU LYS THR PHE SER ALA GLY TYR SEQRES 4 155 THR ARG THR THR ASN ASN ARG MET GLU LEU MET ALA ALA SEQRES 5 155 ILE VAL ALA LEU GLU ALA LEU LYS GLU HIS CYS GLU VAL SEQRES 6 155 ILE LEU SER THR ASP SER GLN TYR VAL ARG GLN GLY ILE SEQRES 7 155 THR GLN TRP ILE HIS ASN TRP LYS LYS ARG GLY TRP LYS SEQRES 8 155 THR ALA ASP LYS LYS PRO VAL LYS ASN VAL ASP LEU TRP SEQRES 9 155 GLN ARG LEU ASP ALA ALA LEU GLY GLN HIS GLN ILE LYS SEQRES 10 155 TRP GLU TRP VAL LYS GLY HIS ALA GLY HIS PRO GLU ASN SEQRES 11 155 GLU ARG CYS ASP GLU LEU ALA ARG ALA ALA ALA MET ASN SEQRES 12 155 PRO THR LEU GLU ASP THR GLY TYR GLN VAL GLU VAL FTNOTE 1 FTNOTE 1 RESIDUE 17 IS A CIS PROLINE. FORMUL 2 HOH *225(H2 O1) HELIX 1 A1 THR 43 ALA 58 1 HELIX 2 H31 ALA 55 LEU 59 5 HELIX 3 A2 SER 71 THR 79 1 HELIX 4 A3 TRP 81 GLY 89 1 HELIX 5 A4 ASN 100 GLY 112 1 HELIX 6 H32 ALA 110 HIS 114 5 HELIX 7 A5 HIS 127 ALA 141 1 HELIX 8 H33 ARG 138 ASN 143 5 SHEET 1 S1 5 ARG 31 TYR 39 0 SHEET 2 S1 5 PRO 19 TYR 28 -1 O TYR 28 N ARG 31 SHEET 3 S1 5 VAL 5 LEU 14 -1 N GLU 6 O ARG 27 SHEET 4 S1 5 CYS 63 THR 69 1 O GLU 64 N VAL 5 SHEET 5 S1 5 GLN 115 VAL 121 1 N GLN 115 O CYS 63 TURN 1 B1 TYR 28 ARG 31 TURN 2 B2 THR 92 LYS 95 TURN 3 B3 VAL 98 VAL 101 TURN 4 B4 LYS 122 ALA 125 TURN 5 B5 ASP 148 TYR 151 SITE 1 MG 3 ASP 10 GLU 48 ASP 70 CRYST1 44.060 86.850 35.470 90.00 90.00 90.00 P 21 21 21 4 ORIGX1 1.000000 0.000000 0.000000 0.00000 ORIGX2 0.000000 1.000000 0.000000 0.00000 ORIGX3 0.000000 0.000000 1.000000 0.00000 SCALE1 0.022696 0.000000 0.000000 0.00000 SCALE2 0.000000 0.011514 0.000000 0.00000 SCALE3 0.000000 0.000000 0.028193 0.00000