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- PDB-1ahr: CALMODULIN MUTANT WITH A TWO RESIDUE DELETION IN THE CENTRAL HELIX -

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Basic information

Entry
Database: PDB / ID: 1ahr
TitleCALMODULIN MUTANT WITH A TWO RESIDUE DELETION IN THE CENTRAL HELIX
ComponentsCALMODULIN
KeywordsCALCIUM-BINDING PROTEIN / CALMODULIN
Function / homology
Function and homology information


CH domain binding / myosin binding / disordered domain specific binding / myelin sheath / calcium ion binding / centrosome / protein-containing complex / cytoplasm
Similarity search - Function
EF-hand / : / Recoverin; domain 1 / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / EF-hand domain pair ...EF-hand / : / Recoverin; domain 1 / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / EF-hand domain pair / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
Biological speciesGallus gallus (chicken)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.8 Å
AuthorsTabernero, L. / Sack, J.
CitationJournal: Structure / Year: 1997
Title: The structure of a calmodulin mutant with a deletion in the central helix: implications for molecular recognition and protein binding.
Authors: Tabernero, L. / Taylor, D.A. / Chandross, R.J. / VanBerkum, M.F. / Means, A.R. / Quiocho, F.A. / Sack, J.S.
History
DepositionApr 10, 1997Processing site: BNL
Revision 1.0Jun 16, 1997Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Dec 21, 2022Group: Database references / Derived calculations / Other
Category: database_2 / pdbx_database_status ...database_2 / pdbx_database_status / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.process_site / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Aug 9, 2023Group: Refinement description / Category: pdbx_initial_refinement_model
Revision 1.5May 22, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: CALMODULIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)16,6385
Polymers16,4781
Non-polymers1604
Water2,036113
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)27.090, 55.510, 100.890
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein CALMODULIN


Mass: 16478.133 Da / Num. of mol.: 1 / Mutation: DEL(T79), DEL(D80)
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Gallus gallus (chicken) / Cell line: 293 / Production host: Escherichia coli (E. coli) / Strain (production host): 293 / References: UniProt: P62149
#2: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Ca
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 113 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsSEQUENCE AND NUMBERING IS AS IN WILD TYPE CALMODULIN (PDB ENTRY 4CLN) WITH RESIDUES THR 79 AND ASP 80 DELETED.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.32 Å3/Da / Density % sol: 46.56 % / Description: SEPARATE ROTATION SEARCH FOR EACH DOMAIN
Crystal growpH: 4.25
Details: 28-33% MPD, 15% ETHANOL, 5MM CACL, 20MM NA ACETATE, PH 4.25
Crystal grow
*PLUS
Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
111.7 mg/mlprotein1drop
228-33 %MPD1drop
315 %ethanol1drop
45 mMcalcium chloride1drop
520 mMsodium acetate1drop

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Data collection

DiffractionMean temperature: 300 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH2R / Wavelength: 1.5418
DetectorType: ADSC / Detector: AREA DETECTOR / Date: Dec 1, 1988 / Details: COLLIMATOR
RadiationMonochromator: GRAPHITE(002) / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionHighest resolution: 1.8 Å / Num. obs: 14407 / % possible obs: 67.3 % / Observed criterion σ(I): 2 / Redundancy: 2.4 % / Rsym value: 0.501 / Net I/σ(I): 8.68
Reflection
*PLUS
Num. measured all: 27799 / Rmerge(I) obs: 0.0501

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Processing

Software
NameVersionClassification
X-PLOR3.1model building
X-PLOR3.1refinement
UCSDdata reduction
ROCKSdata scaling
X-PLOR3.1phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 4CLN

4cln


Resolution: 1.8→8 Å / Rfactor Rwork: 0.211 / Rfactor obs: 0.211 / σ(F): 2
Refinement stepCycle: LAST / Resolution: 1.8→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1149 0 4 113 1266
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.015
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.8
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
Software
*PLUS
Name: X-PLOR / Version: 3.1 / Classification: refinement
Refinement
*PLUS
Num. reflection obs: 9845
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Type: x_bond_d / Dev ideal: 0.015

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