CaBP Data Library General Information

Information in the EF-Hand Calcium-Binding Proteins Database from Reference 259

Protein
Species
Information
Comment
Submitted By
Validated By
calbindin D9k
Bos taurus
(cow or bovine)
This protein binds 2 equivalents of Ca ion This paper reports the calcium affinity of wildtype calbindin D9k and of several mutants
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
Bos taurus
(cow or bovine)
Report of an engineered mutant with following mutations:
  • Y13F

Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • Y13F
Bos taurus
(cow or bovine)
This protein binds 2 equivalents of Ca ion
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • Y13F
Bos taurus
(cow or bovine)
Ca binding constants measured by competitive chelator:
  • K1 = 3.7E08 +/- 5E07
  • K2 = 2.5E08 +/- 4E07
  • Temperature: 25
  • pH: 7.5
  • Salt concentration: no salt added
  • Buffer:
    • 0.002 M Tris-HCl

Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • P20G
Bos taurus
(cow or bovine)
This protein binds 2 equivalents of Ca ion
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
Sus scrofa
(pig)
This protein binds 2 equivalents of Ca ion
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
Sus scrofa
(pig)
Ca binding constants measured by competitive chelator:
  • K1 = 8E07 +/- 1.5E07
  • K2 = 1.8E08 +/- 2E07
  • Temperature: 25
  • pH: 7.5
  • Salt concentration: no salt added
  • Buffer:
    • 0.002 M Tris-HCl

Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • P20 deleted
Bos taurus
(cow or bovine)
This protein binds 2 equivalents of Ca ion
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • P20 deleted
Bos taurus
(cow or bovine)
Ca binding constants measured by competitive chelator:
  • K1 = 8E07 +/- 1.5E07
  • K2 = 500000 +/- 200000
  • Temperature: 25
  • pH: 7.5
  • Salt concentration: no salt added
  • Buffer:
    • 0.002 M Tris-HCl

Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • P20G
  • N21 deleted
Bos taurus
(cow or bovine)
This protein binds 2 equivalents of Ca ion
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • P20G
  • N21 deleted
Bos taurus
(cow or bovine)
Ca binding constants measured by competitive chelator:
  • K1 = 1.7E08 +/- 2E07
  • K2 = 5E08 +/- 2E08
  • Temperature: 25
  • pH: 7.5
  • Salt concentration: no salt added
  • Buffer:
    • 0.002 M Tris-HCl

Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • Y13F
Bos taurus
(cow or bovine)
Apo form is slightly less stable to urea and temperature unfolding compared to wildtype
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • P20G
Bos taurus
(cow or bovine)
Macroscopic calcium binding constants are lower than for wildtype calbindin, particularly K2
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • P20 deleted
Bos taurus
(cow or bovine)
Macroscopic calcium binding constants are lower than for wildtype calbindin, particularly K2
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu
calbindin D9k
mutant:
  • P20G
  • N21 deleted
Bos taurus
(cow or bovine)
Macroscopic binding constants are lower than for wildtype calbindin, particularly K2. Interestingly, K1 is slightly higher than K1 for P20G alone, while K2 is about the same (within error bars)
Melanie R. Nelson
The Scripps Research Institute, Department of Molecular Biology
mnelson@scripps.edu
Melanie R. Nelson
mnelson@scripps.edu