Correction

BIOPHYSICS. For the article “Molecular spectroscopy and dynamics of intrinsically fluorescent proteins: Coral red (dsRed) and yellow (Citrine)” by Ahmed A. Heikal, Samuel T. Hess, Geoffrey S. Baird, Roger Y. Tsien, and Watt W. Webb , which appeared in number 22, October 24, 2000, of Proc. Natl. Acad. Sci. USA (97, 11996–12001), the authors note the following corrections.

1.

Eq. 1 on page 11997, line 16 from the top of the left-hand column is written as:

but the equation should read:

1

2.

On page 11998, lines 25 and 27 from the top of the left-hand column state:

At k_ex = 514 nm, f₁ = 0.42 ± 0.06 and Φ₁ = 1.3 ± 0.3 × 10⁻³, suggesting that the quantum yield for the reverse photoconversion is k_ex dependent.

The sentence should read: At λ_ex = 514 nm, f₁ = 0.42 ± 0.06 and Φ₁ = 1.3 ± 0.3 × 10⁻³, suggesting that the quantum yield for the reverse photoconversion is λ_ex dependent.

3.

On page 12000, line 19 from the top of the right-hand column, “(η ≈ 1 × 10⁻³⋅kgm−1⋅s⁻¹)” should read “(η ≈ 1 × 10⁻³ kgm⁻¹⋅s⁻¹),” and

4.

In Summary on page 12001, line 11 from the top of the right-hand column, “(on 10⁻⁶⋅10⁻¹¹-s time scale)” should read “(on 10⁻⁶–10⁻¹¹ s time scale).”