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Prolyl 4-hydroxylase
Abstract
Posttranslational modifications can cause profound changes in protein function. Typically, these modifications are reversible, and thus provide a biochemical on-off switch. In contrast, proline residues are the substrates for an irreversible reaction that is the most common posttranslational modification in humans. This reaction, which is catalyzed by prolyl 4-hydroxylase (P4H), yields (2S,4R)-4-hydroxyproline (Hyp). The protein substrates for P4Hs are diverse. Likewise, the biological consequences of prolyl hydroxylation vary widely, and include altering protein conformation and protein-protein interactions, and enabling further modification. The best known role for Hyp is in stabilizing the collagen triple helix. Hyp is also found in proteins with collagen-like domains, as well as elastin, conotoxins, and argonaute 2. A prolyl hydroxylase domain protein acts on the hypoxia inducible factor alpha, which plays a key role in sensing molecular oxygen, and could act on inhibitory kappaB kinase and RNA polymerase II. P4Hs are not unique to animals, being found in plants and microbes as well. Here, we review the enzymic catalysts of prolyl hydroxylation, along with the chemical and biochemical consequences of this subtle but abundant posttranslational modification.
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“The enzyme collagen prolyl 4-hydroxylase (CP4H) is a non-heme Fe(II)- and α-ketoglutarate-dependent dioxygenase (FAKGD) that catalyzes the stereoselective hydroxylation of Cγ of (2S)-proline (Pro) residues in collagen strands.2”
From Human Collagen Prolyl 4-Hydroxylase Is Activated by Ligands for Its Iron Center (2016) · cites this paper as [2]
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Jaakkola, P., Mole, D. R., Tian, Y.-M., Wilson, M. I., Gielbert, J., Gaskell, S. J., Kriegsheim, A. V., Hebestreit, H. F., Mukherji, M., Schofield, C. J., et al. (2001) · Science · doi:10.1126/science.1059796 · Cited by 5,535
Collagen Structure and Stability
Shoulders, M. D., & Raines, R. T. (2009) · Annual Review of Biochemistry · doi:10.1146/annurev.biochem.77.032207.120833 · Cited by 3,923
Self-citationOxygen sensing by metazoans: the central role of the HIF hydroxylase pathway.
Kaelin, W. G., & Ratcliffe, P. J. (2008) · Molecular Cell · doi:10.1016/j.molcel.2008.04.009 · Cited by 3,251
Characterization of the human prolyl 4-hydroxylases that modify the hypoxia-inducible factor
Hirsilä, M., Koivunen, P., Günzler, V., Kivirikko, K. I., & Myllyharju, J. (2003) · Journal of Biological Chemistry · doi:10.1074/jbc.m304982200 · Cited by 794
Structural basis for the recognition of hydroxyproline in HIF-1α by pVHL
Hon, W.-C., Wilson, M. I., Harlos, K., Claridge, T. D. W., Schofield, C. J., Pugh, C. W., Maxwell, P. H., Ratcliffe, P. J., Stuart, D. I., & Jones, E. Y. (2002) · Nature · doi:10.1038/nature00767 · Cited by 751 · cited 3×
“The presence of Hyp in a peptide fragment of HIF-1α increases its affinity for the VCB complex by 103-fold (Hon et al., 2002).”
BackgroundSurfactant proteins SP-A and SP-D: structure, function and receptors
Kishore, U., Greenhough, T. J., Waters, P., Shrive, A. K., Ghai, R., Kamran, M. F., Bernal, A. L., Reid, K. B. M., Madan, T., & Chakraborty, T. (2006) · Molecular Immunology · doi:10.1016/j.molimm.2005.08.004 · Cited by 523
Inhibition of oxygen sensors as a therapeutic strategy for ischaemic and inflammatory disease
Fraisl, P., Aragonés, J., & Carmeliet, P. (2009) · Nature Reviews Drug Discovery · doi:10.1038/nrd2761 · Cited by 326
Ehrismann, D., Flashman, E., Genn, D. N., Mathioudakis, N., Hewitson, K. S., Ratcliffe, P. J., & Schofield, C. J. (2007) · Biochemical Journal · doi:10.1042/bj20061151 · Cited by 225 · cited 2×
“The apparent K M value of PHDs for O 2 is higher than that for collagen P4H and is greater than the concentration of molecular oxygen in tissues, which allows the enzymatic activity to report on O 2 concentrations throughout the physiological range (Hirsilä et al., 2003; Ehrismann et al., 2007).”
BackgroundThe role of ascorbate in the prolyl hydroxylase reaction
Myllylä, R., Kuutti-Savolainen, E.-R., & Kivirikko, K. I. (1978) · Biochemical and Biophysical Research Communications · doi:10.1016/0006-291x(78)91010-0 · Cited by 213
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Metadata
- Authors
- Gorres, K. L., & Raines, R. T.
- Venue
- Critical Reviews in Biochemistry and Molecular Biology
- Publisher
- Informa UK Limited
- Published
- 2010-03-04
- Volume
- 45
- Issue
- 2
- Pages
- 106-124
- ISSN
- 1040-9238
- 1549-7798
- PMC
- PMC2841224
- Cited by
- 591
- References
- 9
- Language
- en
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