The Bacillus subtilis signaling protein SpoIVB defines a new family of serine peptidases [PDF]
The protein SpoIVB plays a key role in signaling in the sigma (K) checkpoint of Bacillus subtilis. This regulatory mechanism coordinates late gene expression during development in this organism and we have recently shown SpoIVB to be a serine peptidase ...
Brannigan, J A, Cutting, S M, Hoa, N T
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A Catalytic Domain of Eukaryotic DNA Topoisomerase I [PDF]
Eukaryotic type IB topoisomerases catalyze the cleavage and rejoining of DNA strands through a DNA-(3'-phosphotyrosyl)-enzyme intermediate. The 314-amino acid vaccinia topoisomerase is the smallest member of this family and is distinguished from its cellular counterparts by its specificity for cleavage at the target sequence 5'-CCCTT downward arrow ...
C, Cheng, S, Shuman
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Commensal bacterium Clostridium paraputrificum J4 produces several extracellular chitinolytic enzymes including a 62 kDa chitinase Chit62J4 active toward 4-nitrophenyl N,N′-diacetyl-β-d-chitobioside (pNGG).
Jan Dohnálek +7 more
doaj +1 more source
Mutational analysis of a ras catalytic domain. [PDF]
We used linker insertion-deletion mutagenesis to study the catalytic domain of the Harvey murine sarcoma virus v-rasH transforming protein, which is closely related to the cellular rasH protein. The mutants displayed a wide range of in vitro biological activity, from those that induced focal transformation of NIH 3T3 cells with approximately the same ...
Willumsen, B M +7 more
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Biochemical and structural analysis of a site directed mutant of manganese dependent aminopeptidase P from Streptomyces lavendulae [PDF]
Aminopeptidase P (APP) removes N-terminal amino acids from peptides and proteins when the penultimate residue is proline. To understand the structure-function relationships of aminopeptidase P of Streptomyces lavendulae, a conserved arginine residue was ...
ARYA NANDAN, KESAVAN M. NAMPOOTHIRI
doaj
Structural determinants of APOBEC3B non-catalytic domain for molecular assembly and catalytic regulation [PDF]
The catalytic activity of human cytidine deaminase APOBEC3B (A3B) has been correlated with kataegic mutational patterns within multiple cancer types. The molecular basis of how the N-terminal non-catalytic CD1 regulates the catalytic activity and consequently, biological function of A3B remains relatively unknown.
Xiao, Xiao +7 more
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Polyhydroxyalkanoate synthase (PhaC): The key enzyme for biopolyester synthesis
Polyhydroxyalkanoates (PHAs) are considered good candidates in replacing commercial petrochemical plastics in certain applications like single-use packaging since they are biodegradable, biocompatible and share similar properties with conventional ...
Soon Zher Neoh +6 more
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Autoantibodies against the catalytic domain of BRAF are not specific serum markers for rheumatoid arthritis. [PDF]
BACKGROUND: Autoantibodies to the catalytic domain of v-raf murine sarcoma viral oncogene homologue B1 (BRAF) have been recently identified as a new family of autoantibodies involved in rheumatoid arthritis (RA).
Wenli Li +8 more
doaj +1 more source
The many-faced KSR1: a tumor suppressor in breast cancer [PDF]
Emerging evidence supports the dual function of kinase suppressor of Ras 1 (KSR1) as an active kinase and a scaffold, although it has been extensively referred as a pseudokinase, due to the absence of key residues in its catalytic domain [1, 2].
Giamas, Georgios +2 more
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Template-Directed Self-Assembly Enhances RTK Catalytic Domain Function [PDF]
Receptor tyrosine kinases have become important therapeutic targets because of their involvement in diseases, including cancer. Kinase domains, which are soluble and easily purified, have found widespread use in enzyme inhibitor assays, but these domains do not exhibit full function because they are isolated from the membrane.
Esposito, EA, Shrout, AL, Weis, RM
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