PDB Short entry for 1K9N HEADER MEMBRANE PROTEIN 29-OCT-01 1K9N TITLE MODEL OF THE PENTAMERIC TRANSMEMBRANE DOMAIN OF TITLE 2 PHOSPHOLAMBAN, A REGULATOR OF THE CALCIUM ATPASE SERCA2A COMPND MOL_ID: 1; COMPND 2 MOLECULE: CARDIAC PHOSPHOLAMBAN; COMPND 3 CHAIN: A, B, C, D, E; COMPND 4 FRAGMENT: PUTATIVE MEMBRANE SPANNING DOMAIN RESIDUES 35-52; COMPND 5 SYNONYM: PLB SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGAN: HEART; SOURCE 5 TISSUE: SARCOPLASMIC RETICULUM KEYWDS ATPASE REGULATOR, PHOSPHORYLATION, PENTAMERIC HELIX BUNDLE, KEYWDS 2 LEUCINE-ISOLEUCINE ZIPPER MODEL EXPDTA THEORETICAL MODEL AUTHOR M.G.PATERLINI,J.KARIM,C.B.KARIM,D.D.THOMAS REVDAT 1 14-NOV-01 1K9N 0 JRNL AUTH C.B.KARIM,J.D.STAMM,J.KARIM,L.R.JONES,D.D.THOMAS JRNL TITL CYSTEINE REACTIVITY AND OLIGOMERIC STRUCTURES OF JRNL TITL 2 PHOSPHOLAMBAN AND ITS MUTANTS JRNL REF BIOCHEMISTRY V. 37 12074 1998 JRNL REFN ASTM BICHAW US ISSN 0006-2960 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH C.B.KARIM,M.G.PATERLINI,L.G.REDDY,G.W.HUNTER, REMARK 1 AUTH 2 G.BARANY,D.D.THOMAS REMARK 1 TITL ROLE OF CYSTEINE RESIDUES IN STRUCTURAL STABILITY REMARK 1 TITL 2 AND FUNCTION OF A TRANSMEMBRANE HELIX BUNDLE REMARK 1 REF J.BIOL.CHEM. V. 276 38814 2001 REMARK 1 REFN ASTM JBCHA3 US ISSN 0021-9258 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : AMBER 5.0 REMARK 3 AUTHORS : CASE D.A. ET AL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE SEQUENCE MODELLED IS THAT OF THE REMARK 3 PUTATIVE TRANSMEMBRANE REGION AND THEREFORE BEGINS AT RESIDUE REMARK 3 35 AND ENDS AT RESIDUE 52. REMARK 4 REMARK 4 1K9N COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 08-NOV-2001. REMARK 100 THE RCSB ID CODE IS RCSB014733. REMARK 220 REMARK 220 EXPERIMENTAL DETAILS REMARK 220 EXPERIMENT TYPE : THEORETICAL MODELLING REMARK 220 REMARK 220 REMARK: THE COORDINATES IN THIS ENTRY REPRESENT A THEORETICAL REMARK 220 MODEL STRUCTURE. THE ATOMIC MODEL OF THE PUTATIVE REMARK 220 TRANSMEMBRANE REGION OF PHOSPHOLAMBAN (RESIDUES 35-52) REMARK 220 WAS OBTAINED BY FIRST CONSIDERING THE PREVIOUS REMARK 220 THEORETICAL MODEL OF ATKINS ET AL. (PDB ENTRY CODE 1PSL) REMARK 220 . EACH HELIX WAS THEN ROTATED AROUND ITS LONG AXIS BY 51 REMARK 220 DEGREES, IN AGREEMENT WITH THE THE LEUCINE-ISOLEUCINE REMARK 220 ZIPPER MODEL OF SIMMERMAN ET AL.(H.K.SIMMERMAN, REMARK 220 Y.M.KOBAYASHI,J.M.AUTRY, L.R.JONES, J.BIOL.CHEM. 1996, REMARK 220 V.271, 5941). IN THIS MODEL LEU37, LEU44, LEU51 AND REMARK 220 ILE40 ILE47 OCCUPY THE A AND D POSITIONS, RESPECTIVELY REMARK 220 OF THE HEPTADIC HELICAL REPEAT. THE MODEL WAS THEN USED REMARK 220 AS THE STARTING POINT FOR SIMULATIONS CARRIED OUT USING REMARK 220 AMBER 5.0 SOFTWARE PACKAGE (UNIVERSITY OF CALIFORNIA, REMARK 220 SAN FRANCISCO). BEFORE ENERGY MINIMIZATION, SIDE CHAIN REMARK 220 ROTAMERS WERE GENERATED USING THE SOFTWARE PROGRAM SQWRL REMARK 220 (R.L.DUNBRACK, M.KARPLUS, NAT.STRUCT.BIOL. 1994, V.1, REMARK 220 334) TO RELIEVE UNFAVORABLE INTERACTIONS BETWEEN SIDE REMARK 220 CHAINS. THE TEMPLATE WAS ENERGY-MINIMIZED USING A 12- REMARK 220 ANGSTROM NON-BONDED CUTOFF, A DISTANCE-DEPENDENT REMARK 220 DIELECTRIC CONSTANT OF 4R, AND A CONVERGE CRITERION OF REMARK 220 5X10-5 KCAL/MOLE ANGSTROM-2 IN THE ROOT-MEAN SQUARE OF REMARK 220 THE CARTESIAN ELEMENTS OF THE ENERGY GRADIENT. REMARK 220 POSITIONAL CONSTRAINTS WERE IMPOSED ON THE BACKBONE REMARK 220 HEAVY ATOMS USING A HARMONIC POTENTIAL WITH A FORCE REMARK 220 CONSTANT OF 5 KCAL/MOLE ANGSTROM-2. THE SEQUENCE REMARK 220 MODELLED IS THAT OF THE PUTATIVE TRANSMEMBRANE REGION REMARK 220 AND THEREFORE BEGINS AT RESIDUE 35 AND ENDS AT RESIDUE REMARK 220 52. REMARK 225 REMARK 225 THEORETICAL MODEL REMARK 225 THE COORDINATES IN THIS ENTRY REPRESENT A MODEL STRUCTURE. REMARK 225 PROTEIN DATA BANK CONVENTIONS REQUIRE THAT CRYST1 AND REMARK 225 SCALE RECORDS BE INCLUDED, BUT THE VALUES ON THESE REMARK 225 RECORDS ARE MEANINGLESS. REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1PSL RELATED DB: PDB DBREF 1K9N A 35 52 UNP P26678 PPLA_HUMAN 35 52 DBREF 1K9N B 35 52 UNP P26678 PPLA_HUMAN 35 52 DBREF 1K9N C 35 52 UNP P26678 PPLA_HUMAN 35 52 DBREF 1K9N D 35 52 UNP P26678 PPLA_HUMAN 35 52 DBREF 1K9N E 35 52 UNP P26678 PPLA_HUMAN 35 52 SEQRES 1 A 18 PHE CYS LEU ILE LEU ILE CYS LEU LEU LEU ILE CYS ILE SEQRES 2 A 18 ILE VAL MET LEU LEU SEQRES 1 B 18 PHE CYS LEU ILE LEU ILE CYS LEU LEU LEU ILE CYS ILE SEQRES 2 B 18 ILE VAL MET LEU LEU SEQRES 1 C 18 PHE CYS LEU ILE LEU ILE CYS LEU LEU LEU ILE CYS ILE SEQRES 2 C 18 ILE VAL MET LEU LEU SEQRES 1 D 18 PHE CYS LEU ILE LEU ILE CYS LEU LEU LEU ILE CYS ILE SEQRES 2 D 18 ILE VAL MET LEU LEU SEQRES 1 E 18 PHE CYS LEU ILE LEU ILE CYS LEU LEU LEU ILE CYS ILE SEQRES 2 E 18 ILE VAL MET LEU LEU HELIX 1 A PHE A 35 LEU A 52 1 18 HELIX 2 B PHE B 35 LEU B 52 1 18 HELIX 3 C PHE C 35 LEU C 52 1 18 HELIX 4 D PHE D 35 LEU D 52 1 18 HELIX 5 E PHE E 35 LEU E 52 1 18 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 1 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 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000