1SB2 - Header Asymmetric Unit

HEADER TOXIN 10-FEB-04 1SB2

TITLE HIGH RESOLUTION STRUCTURE DETERMINATION OF RHODOCETIN

COMPND MOL_ID: 1; COMPND 2 MOLECULE: RHODOCETIN ALPHA SUBUNIT; COMPND 3 CHAIN: A; COMPND 4 MOL_ID: 2; COMPND 5 MOLECULE: RHODOCETIN BETA SUBUNIT; COMPND 6 CHAIN: B

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CALLOSELASMA RHODOSTOMA; SOURCE 3 ORGANISM_COMMON: MALAYAN PIT VIPER; SOURCE 4 ORGANISM_TAXID: 8717; SOURCE 5 OTHER_DETAILS: ORGANISM NAME SYNONYM: AGKISTRODON SOURCE 6 RHODOSTOMA; SOURCE 7 MOL_ID: 2; SOURCE 8 ORGANISM_SCIENTIFIC: CALLOSELASMA RHODOSTOMA; SOURCE 9 ORGANISM_COMMON: MALAYAN PIT VIPER; SOURCE 10 ORGANISM_TAXID: 8717; SOURCE 11 OTHER_DETAILS: ORGANISM NAME SYNONYM: AGKISTRODON SOURCE 12 RHODOSTOMA

KEYWDS C-TYPE LECTIN; DOMAIN SWAPPING, TOXIN

EXPDTA X-RAY DIFFRACTION

AUTHOR P.PAAVENTHAN,C.G.KONG,J.S.JOSEPH,M.C.M.CHUNG,P.R.KOLATKAR

REVDAT 2 24-FEB-09 1SB2 1 VERSN REVDAT 1 01-FEB-05 1SB2 0

JRNL AUTH P.PAAVENTHAN,C.G.KONG,J.S.JOSEPH,M.C.M.CHUNG, JRNL AUTH 2 P.R.KOLATKAR JRNL TITL STRUCTURE OF RHODOCETIN REVEALS NONCOVALENTLY JRNL TITL 2 BOUND HETERODIMER INTERFACE JRNL REF PROTEIN SCI. V. 14 169 2005 JRNL REFN ISSN 0961-8368 JRNL PMID 15576563 JRNL DOI 10.1110/PS.04945605

REMARK 1

REMARK 2 REMARK 2 RESOLUTION. 1.90 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.1.24 REMARK 3 AUTHORS : MURSHUDOV,VAGIN,DODSON REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD WITH PHASES REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 28.87 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.2 REMARK 3 NUMBER OF REFLECTIONS : 27466 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : 0.191 REMARK 3 R VALUE (WORKING SET) : 0.189 REMARK 3 FREE R VALUE : 0.231 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 1472 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.90 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.95 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1572 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.2360 REMARK 3 BIN FREE R VALUE SET COUNT : 73 REMARK 3 BIN FREE R VALUE : 0.2800 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2104 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 167 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 24.57 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.01000 REMARK 3 B22 (A**2) : 0.02000 REMARK 3 B33 (A**2) : -0.01000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.130 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.130 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.066 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.226 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.954 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.931 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2168 ; 0.020 ; 0.021 REMARK 3 BOND LENGTHS OTHERS (A): 1837 ; 0.002 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 2925 ; 1.672 ; 1.930 REMARK 3 BOND ANGLES OTHERS (DEGREES): 4314 ; 0.998 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 253 ; 7.156 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): NULL ; NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 289 ; 0.175 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2388 ; 0.009 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 468 ; 0.010 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 421 ; 0.236 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 2097 ; 0.257 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): 1174 ; 0.089 ; 0.200 REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 96 ; 0.167 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 6 ; 0.245 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): 27 ; 0.274 ; 0.200 REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 5 ; 0.107 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 1274 ; 1.183 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 2042 ; 2.180 ; 2.000 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 894 ; 3.127 ; 3.000 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 883 ; 4.832 ; 4.500 REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : BABINET MODEL WITH MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.40 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE REMARK 3 RIDING POSITIONS

REMARK 4 REMARK 4 1SB2 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 23-FEB-04. REMARK 100 THE RCSB ID CODE IS RCSB021570.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 29-MAY-01 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X8C REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.978569 REMARK 200 MONOCHROMATOR : SI 111 CHANNEL REMARK 200 OPTICS : MIRROR REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 27466 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 28.870 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.2 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.97 REMARK 200 COMPLETENESS FOR SHELL (%) : 78.7 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: MOLREP REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 57.10 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.89 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NAH2PO4, KH2PO4, HEPES-NA, PH 7.5, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 294K

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 REMARK 290 4555 X+1/2,-Y+1/2,-Z REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 23.43750 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 59.42050 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 32.96750 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 59.42050 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 23.43750 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 32.96750 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL

REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON REMARK 300 BURIED SURFACE AREA.

REMARK 350 REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 3340 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 13370 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -20.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000

REMARK 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 ARG A 133 REMARK 465 ASP B 1 REMARK 465 ASP B 62 REMARK 465 LYS B 63 REMARK 465 GLN B 64 REMARK 465 HIS B 129

REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS(M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 ASP A 1 CG OD1 OD2 REMARK 470 ARG B 65 CG CD NE CZ NH1 NH2 REMARK 470 TRP B 104 CB CG CD1 CD2 NE1 CE2 CE3 REMARK 470 TRP B 104 CZ2 CZ3 CH2 REMARK 470 GLU B 105 CB CG CD OE1 OE2 REMARK 470 LYS B 107 CB CG CD CE NZ REMARK 470 PRO B 128 CG CD

REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 O HOH B 140 O HOH B 151 2.07 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 GLU A 24 CD GLU A 24 OE1 0.067 REMARK 500 GLU A 24 CD GLU A 24 OE2 0.115 REMARK 500 GLU B 88 CB GLU B 88 CG 0.120 REMARK 500 GLU B 88 CD GLU B 88 OE1 0.092 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ASP A 4 CB - CG - OD2 ANGL. DEV. = 6.1 DEGREES REMARK 500 ASP A 106 CB - CG - OD2 ANGL. DEV. = 7.1 DEGREES REMARK 500 ASP A 118 CB - CG - OD1 ANGL. DEV. = 5.9 DEGREES REMARK 500 ARG B 30 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 PRO B 128 N - CA - CB ANGL. DEV. = 11.8 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 THR A 9 -157.60 -114.95 REMARK 500 GLN A 108 -64.58 -106.46 REMARK 500 THR B 7 -11.26 95.35 REMARK 500 SER B 86 -76.35 -89.68 REMARK 500 GLU B 105 56.07 39.24 REMARK 500 LYS B 107 -164.35 -104.82 REMARK 500 REMARK 500 REMARK: NULL

REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH B 194 DISTANCE = 5.08 ANGSTROMS REMARK 525 HOH A 226 DISTANCE = 5.24 ANGSTROMS REMARK 525 HOH A 230 DISTANCE = 6.60 ANGSTROMS

DBREF 1SB2 A 1 133 UNP P81397 RHCA_AGKRH 1 133 DBREF 1SB2 B 1 129 UNP P81398 RHCB_AGKRH 1 129

SEQRES 1 A 133 ASP CYS PRO ASP GLY TRP SER SER THR LYS SER TYR CYS SEQRES 2 A 133 TYR ARG PRO PHE LYS GLU LYS LYS THR TRP GLU GLU ALA SEQRES 3 A 133 GLU ARG PHE CYS THR GLU GLN GLU LYS GLU ALA HIS LEU SEQRES 4 A 133 VAL SER MET GLU ASN ARG LEU GLU ALA VAL PHE VAL ASP SEQRES 5 A 133 MET VAL MET GLU ASN ASN PHE GLU ASN LYS ILE TYR ARG SEQRES 6 A 133 SER TRP ILE GLY LEU LYS ILE GLU ASN LYS GLY GLN ARG SEQRES 7 A 133 SER ASN LEU GLU TRP SER ASP GLY SER SER ILE SER TYR SEQRES 8 A 133 GLU ASN LEU TYR GLU PRO TYR MET GLU LYS CYS PHE LEU SEQRES 9 A 133 MET ASP HIS GLN SER GLY LEU PRO LYS TRP HIS THR ALA SEQRES 10 A 133 ASP CYS GLU GLU LYS ASN VAL PHE MET CYS LYS PHE GLN SEQRES 11 A 133 LEU PRO ARG SEQRES 1 B 129 ASP PHE ARG CYS PRO THR THR TRP SER ALA SER LYS LEU SEQRES 2 B 129 TYR CYS TYR LYS PRO PHE LYS GLU LYS LYS THR TRP ILE SEQRES 3 B 129 GLU ALA GLU ARG PHE CYS ALA LYS GLN ALA GLU ASN GLY SEQRES 4 B 129 HIS LEU VAL SER ILE GLY SER ALA ALA GLU ALA ASP PHE SEQRES 5 B 129 LEU ASP LEU VAL ILE VAL VAL ASN PHE ASP LYS GLN ARG SEQRES 6 B 129 TYR ARG ALA TRP THR GLY LEU THR GLU ARG ASN LEU LYS SEQRES 7 B 129 TRP THR ASN GLY ALA SER VAL SER TYR GLU ASN LEU TYR SEQRES 8 B 129 GLU PRO TYR ILE ARG LYS CYS PHE VAL VAL GLN PRO TRP SEQRES 9 B 129 GLU GLY LYS SER LYS TRP TYR LYS ALA ASP CYS GLU GLU SEQRES 10 B 129 LYS ASN ALA PHE LEU CYS LYS PHE PRO LYS PRO HIS

FORMUL 3 HOH *167(H2 O)

HELIX 1 1 THR A 22 GLU A 32 1 11 HELIX 2 2 ASN A 44 PHE A 59 1 16 HELIX 3 3 THR B 24 ALA B 36 1 13 HELIX 4 4 SER B 46 PHE B 61 1 16

SHEET 1 A 4 SER A 7 SER A 8 0 SHEET 2 A 4 TYR A 12 LYS A 21 -1 O TYR A 14 N SER A 7 SHEET 3 A 4 ASN A 123 GLN A 130 -1 O PHE A 125 N PHE A 17 SHEET 4 A 4 HIS A 38 LEU A 39 -1 N HIS A 38 O LYS A 128 SHEET 1 B 6 SER A 7 SER A 8 0 SHEET 2 B 6 TYR A 12 LYS A 21 -1 O TYR A 14 N SER A 7 SHEET 3 B 6 ASN A 123 GLN A 130 -1 O PHE A 125 N PHE A 17 SHEET 4 B 6 TYR A 64 GLU A 73 1 N TRP A 67 O VAL A 124 SHEET 5 B 6 GLU A 100 HIS A 107 -1 O LYS A 101 N ILE A 72 SHEET 6 B 6 LYS A 113 ALA A 117 -1 O HIS A 115 N LEU A 104 SHEET 1 C 4 LEU A 81 TRP A 83 0 SHEET 2 C 4 ALA B 68 GLU B 74 -1 O THR B 73 N GLU A 82 SHEET 3 C 4 ASN B 119 PRO B 126 1 O ALA B 120 N TRP B 69 SHEET 4 C 4 HIS B 40 LEU B 41 -1 N HIS B 40 O LYS B 124 SHEET 1 D 6 SER B 9 ALA B 10 0 SHEET 2 D 6 TYR B 14 LYS B 23 -1 O TYR B 16 N SER B 9 SHEET 3 D 6 ASN B 119 PRO B 126 -1 O CYS B 123 N LYS B 17 SHEET 4 D 6 ALA B 68 GLU B 74 1 N TRP B 69 O ALA B 120 SHEET 5 D 6 CYS B 98 TRP B 104 -1 O VAL B 101 N ALA B 68 SHEET 6 D 6 LYS B 107 ALA B 113 -1 O TYR B 111 N VAL B 100

SSBOND 1 CYS A 2 CYS A 13 1555 1555 2.05 SSBOND 2 CYS A 30 CYS A 127 1555 1555 2.18 SSBOND 3 CYS A 102 CYS A 119 1555 1555 2.10 SSBOND 4 CYS B 4 CYS B 15 1555 1555 2.08 SSBOND 5 CYS B 32 CYS B 123 1555 1555 2.09 SSBOND 6 CYS B 98 CYS B 115 1555 1555 2.56

CRYST1 46.875 65.935 118.841 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 0.021333 0.000000 0.000000 0.00000

SCALE2 0.000000 0.015166 0.000000 0.00000

SCALE3 0.000000 0.000000 0.008415 0.00000