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PMID: 1991105 Published · ppublish English Journal Article Research Support, U.S. Gov't, P.H.S.

Photoacoustic calorimetric study of the conversion of rhodopsin and isorhodopsin to lumirhodopsin.

Biochemistry ·Vol. 30 ·No. 5 ·1991-02-05 ·Pages 1254-8

Marr K, Peters KS

Abstract

The enthalpy and volume changes for the conversion of rhodopsin and isorhodopsin to lumirhodopsin have been investigated by time-resolved photoacoustic calorimetry. The conversion of rhodopsin to lumirhodopsin is endothermic by 3.9 +/- 5.9 kcal/mol and is accompanied by an increase in volume of 29.1 +/- 0.8 mL/mol. The lumirhodopsins produced from rhodopsin and isorhodopsin are energetically equivalent.

MeSH Terms

Animals Calorimetry/methods Cattle Detergents In Vitro Techniques Light Rhodopsin/analogs & derivatives,chemistry Sound Thermodynamics

Chemicals

Detergents isorhodopsin lumirhodopsin Rhodopsin

Authors & Affiliations

2 authors, click to expand affiliations / ORCID

Marr K

Department of Chemistry and Biochemistry, University of Colorado, Boulder 80309-0215.

Peters K S

Article Info

Journal

Biochemistry

Abbr.

Biochemistry

ISSN

0006-2960

DOI

10.1021/bi00219a013

Published

1991-02-05

Pages

1254-8

Language

English

Region

United States

NLM ID

0370623

Subset

Grants

NEI NIH HHS · EY07510 · United States

External Links

PubMed source DOI: 10.1021/bi00219a013 View journal details

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Photoacoustic calorimetric study of the conversion of rhodopsin and isorhodopsin to lumirhodopsin.

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