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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Annu+Rev+Biophys
2013 ; 42
(ä): 289-314
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Considering protonation as a posttranslational modification regulating protein
structure and function
#MMPMID23451893
Schönichen A
; Webb BA
; Jacobson MP
; Barber DL
Annu Rev Biophys
2013[]; 42
(ä): 289-314
PMID23451893
show ga
Posttranslational modification is an evolutionarily conserved mechanism for
regulating protein activity, binding affinity, and stability. Compared with
established posttranslational modifications such as phosphorylation or
ubiquitination, posttranslational modification by protons within physiological pH
ranges is a less recognized mechanism for regulating protein function. By
changing the charge of amino acid side chains, posttranslational modification by
protons can drive dynamic changes in protein conformation and function. Addition
and removal of a proton is rapid and reversible and, in contrast to most other
posttranslational modifications, does not require an enzyme. Signaling
specificity is achieved by only a minority of sites in proteins titrating within
the physiological pH range. Here, we examine the structural mechanisms and
functional consequences of proton posttranslational modification of pH-sensing
proteins regulating different cellular processes.