1X02: Stereo array isotope labeled (SAIL) calmodulin

Solution structure of stereo array isotope labeled (SAIL) calmodulin. Determined by solution NMR. Released 7 Mar 2006.

Method: Solution NMR
Organism: Xenopus laevis
Chains: 1
Atoms: 1,169
Mol. weight: 16.88 kDa
Ligands: CA
Released: 7 Mar 2006

Explore 1X02 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1X02 contains 9 α-helices and 4 β-strands across 1 chain. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 9 helices, 4 β-strands

Element	Residues	Length	Sheet
α-helix	6-17	12
β-strand	27	1	1
α-helix	29-39	11
α-helix	45-55	11
β-strand	63	1	1
α-helix	65-78	14
α-helix	79-81	3
α-helix	82-92	11
β-strand	101	1	2
α-helix	102-113	12
α-helix	118-128	11
β-strand	135	1	2
α-helix	138-145	8

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
calmodulin	A	protein	148	Xenopus laevis	P0DP33 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>1X02_1 calmodulin (chains A)
ADQLTEEQIAEFKEAFSLFDKDGDGTITTKELGTVMRSLGQNPTEAELQDMINEVDADGN
GTIDFPEFLTMMARKMKDTDSEEEIREAFRVFDKDGNGYISAAELRHVMTNLGEKLTDEE
VDEMIREADIDGDGQVNYEEFVQMMTAK

Ligands and cofactors

ID	Name	Formula	Copies
CA	Calcium ion	Ca	4

Primary citation

Optimal isotope labelling for NMR protein structure determinations. Kainosho, M., Torizawa, T., Iwashita, Y. et al. Nature (2006) 440:52-57. DOI 10.1038/nature04525 · PubMed

Other PDB entries of the same protein (UniProt P0DP33 (AlphaFold model), which also has an AlphaFold model), best resolution first:

1IQ5 1.8 Å, Calmodulin/nematode CA2+/Calmodulin dependent kinase kinase fragment
2COL 2.2 Å, Crystal structure analysis of CyaA/C-Cam with Pyrophosphate
4R8G 3.5 Å, Crystal Structure of Myosin-1c tail in complex with Calmodulin
1Y0V 3.6 Å, Crystal structure of anthrax edema factor (EF) in complex with calmodulin and…
1CFC Calcium-free calmodulin
1CFD Calcium-free calmodulin
1CFF NMR solution structure of a complex of calmodulin with a binding peptide of the CA2+-pump
1CKK Calmodulin/rat CA2+/CALMODULIN dependent protein kinase fragment
1DMO Calmodulin, NMR, 30 structures
1F70 Refined solution structure of calmodulin N-terminal domain
1F71 Refined solution structure of calmodulin C-terminal domain
1MUX Solution NMR structure of calmodulin/w-7 complex: the basis of diversity in molecular…

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