Complete sequence determination of hemoglobin from endangered feline species using a combined ESI-MS and X-ray crystallography approach

Jingshu Guo; Saurav Uppal; Lindsey M. Easthon; Timothy C. Mueser; Wendell P. Griffith

doi:10.1016/j.ijms.2011.06.001

Complete sequence determination of hemoglobin from endangered feline species using a combined ESI-MS and X-ray crystallography approach

Jingshu Guo, Saurav Uppal, Lindsey M. Easthon, Timothy C. Mueser, Wendell P. Griffith

Masonic Cancer Center

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We present the first complete amino acid sequences of Snow leopard (Uncia uncia) and Amur tiger (Panthera tigris altaica) hemoglobin (Hb) determined using a combined ESI MS and X-ray crystallography approach. Using mass spectrometry alone, we were able to achieve 81%, 90%, 87% and 72% sequence coverage for the α-, and β-globins of Snow leopard Hb and the α-, and β-chain of Amur tiger Hb, respectively. The incomplete mass spectrometry-determined sequences were used to process X-ray diffraction data of Snow leopard and Amur tiger Hb crystals solved to 2.1 Å and 1.8 Å, respectively. Using tandem mass spectrometry in concert with the electron density maps from X-ray structures, we were able to not only achieve 100% coverage of all amino acid sequences, but to also distinguish between isomeric (leucine and isoleucine) and isobaric (glutamine and lysine) residues. These results demonstrate the synergy between mass spectrometry and X-ray crystallography for the determination of full amino acid sequence coverage of abundant proteins.

Original language	English (US)
Pages (from-to)	70-77
Number of pages	8
Journal	International Journal of Mass Spectrometry
Volume	312
DOIs	https://doi.org/10.1016/j.ijms.2011.06.001
State	Published - Feb 15 2012

Bibliographical note

Funding Information:
This work was supported by start-up funds to Wendell P. Griffith from the University of Toledo , and by a grant from the deArce Memorial Endowment Fund . U. uncia (Snow leopard) and P. tigris altaica (Amur tiger) packed red blood cells were generously donated by the Toledo Zoo. We acknowledge the NSF MRI Program (Award # 0923184 , PI: WPG) for funding the acquisition of the MALDI-TOF/TOF mass spectrometer. We would also like to thank Dr. Bryant Leif Hanson for assistance with the use of the X-ray crystallography equipment as well as useful advice and discussions. We are grateful to the University of Toledo Arts and Sciences Instrumentation Center, where all X-ray diffraction and MALDI-TOF/TOF-MS data were collected.

Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.

Keywords

Amino acid sequence
Amur tiger hemoglobin
Mass spectrometry protein sequencing
Snow leopard hemoglobin
X-ray crystallography

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title = "Complete sequence determination of hemoglobin from endangered feline species using a combined ESI-MS and X-ray crystallography approach",

abstract = "We present the first complete amino acid sequences of Snow leopard (Uncia uncia) and Amur tiger (Panthera tigris altaica) hemoglobin (Hb) determined using a combined ESI MS and X-ray crystallography approach. Using mass spectrometry alone, we were able to achieve 81%, 90%, 87% and 72% sequence coverage for the α-, and β-globins of Snow leopard Hb and the α-, and β-chain of Amur tiger Hb, respectively. The incomplete mass spectrometry-determined sequences were used to process X-ray diffraction data of Snow leopard and Amur tiger Hb crystals solved to 2.1 {\AA} and 1.8 {\AA}, respectively. Using tandem mass spectrometry in concert with the electron density maps from X-ray structures, we were able to not only achieve 100% coverage of all amino acid sequences, but to also distinguish between isomeric (leucine and isoleucine) and isobaric (glutamine and lysine) residues. These results demonstrate the synergy between mass spectrometry and X-ray crystallography for the determination of full amino acid sequence coverage of abundant proteins.",

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author = "Jingshu Guo and Saurav Uppal and Easthon, {Lindsey M.} and Mueser, {Timothy C.} and Griffith, {Wendell P.}",

note = "Funding Information: This work was supported by start-up funds to Wendell P. Griffith from the University of Toledo , and by a grant from the deArce Memorial Endowment Fund . U. uncia (Snow leopard) and P. tigris altaica (Amur tiger) packed red blood cells were generously donated by the Toledo Zoo. We acknowledge the NSF MRI Program (Award # 0923184 , PI: WPG) for funding the acquisition of the MALDI-TOF/TOF mass spectrometer. We would also like to thank Dr. Bryant Leif Hanson for assistance with the use of the X-ray crystallography equipment as well as useful advice and discussions. We are grateful to the University of Toledo Arts and Sciences Instrumentation Center, where all X-ray diffraction and MALDI-TOF/TOF-MS data were collected. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.",

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Complete sequence determination of hemoglobin from endangered feline species using a combined ESI-MS and X-ray crystallography approach

Abstract

Bibliographical note

Keywords

UN SDGs

Access

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