Sequence homology and structure predictions of the creatine kinase isoenzymes.
Comparisons of the protein sequences and gene structures of the known creatine kinase isoenzymes and other guanidino kinases revealed high homology and were used to determine the evolutionary relationships of the various guanidino kinases. A 'CK framework' is defined, consisting of the most conserved sequence blocks, and 'diagnostic boxes' are identified which are characteristic for anyone creatine kinase isoenzyme (e.g. for vertebrate B-CK) and which may serve to distinguish this isoenzyme from all others (e.g. from M-CKs and Mi-CKs). Comparison of the guanidino kinases by near-UV and far-UV circular dichroism further indicates pronounced conservation of secondary structure as well as of aromatic amino acids that are involved in catalysis.
Mühlebach
S M
SM
Institute for Cell Biology, ETH Hönggerberg, Zürich, Switzerland.
Gross
M
M
Wirz
T
T
Wallimann
T
T
Perriard
J C
JC
Wyss
M
M
D000595:Amino Acid Sequence; D000818:Animals; D005075:Biological Evolution; D002942:Circular Dichroism; D003402:Creatine Kinase / Q000737:chemistry / Q000235:genetics*; D016208:Databases, Factual; D006801:Humans; D007527:Isoenzymes; D008969:Molecular Sequence Data; D017852:Phosphotransferases (Nitrogenous Group Acceptor) / Q000737:chemistry / Q000235:genetics; D017433:Protein Structure, Secondary; D017386:Sequence Homology, Amino Acid
D007527:Isoenzymes; D017852:Phosphotransferases (Nitrogenous Group Acceptor); D003402:Creatine Kinase