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Article

Origin of the pH-dependent spectroscopic properties of pentacoordinate metmyoglobin variants.

Biochemistry - 22 Aug 1995

Bogumil R, Maurus R, Hildebrand D P, Brayer G D, Mauk A G

Abstract excerpt

The pH dependence of the electronic and EPR spectra of two variants of horse heart myoglobin (Mb) in which the distal His64 ligand has been replaced by either Thr or Ile has been studied. Both of these variants exhibit spectroscopic changes with pH that are indicative of a transition between two ferric high-spin forms that occurs with a pKa of 9.49 for the His64Thr variant and 9.26 for the His64Ile variant and...

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Identifiers

PMID: 7654702
DOI: 10.1021/bi00033a021

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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