The Lipshitz-Sarkar Steenrod operations on (even) Khovanov homology are incompatible with Szabó's geometric spectral sequence. Obstructions to integral lifting and spectrification observed.

background: the cultivation of saffron is expanding through the southeast of iran, and allergy to saffron pollen occurs in workers involved in processing this plant. we aimed to clone, sequence and express a major allergen involved in saffron pollen allergy, and to compare the recombinant with the natural allergen. methods: the n-terminal amino acid sequence of cro s 1, an allergen from saffron...

Two macromolecular sequences which have evolved from a common ancestor sequence will tend to include a large number of elements unaffected by replacement mutations in both sequences, as long as the evolutionary rate is not too high or the divergence time is not too great. The positions of corresponding elements may have changed in either daughter sequence due to deletion/insertion mutations inv...

Homology-based modeling, or more simply homology modeling, is becoming increasingly important. Models accurate to within 1-2 Å RMS deviation from the actual three-dimensional structure can be produced by homology modeling in favorable cases. With the number of known threedimensional structures projected to grow to more than ten thousand structures by the end of the decade, it will be possible t...

Double-stranded cDNA synthesized from total polyadenylate-containing mRNA extracted from monkey kidney cells infected with canine distemper virus (CDV) was cloned into the PstI site of Escherichia coli plasmid pBR322. Clones containing CDV DNA were identified by hybridization to a CDV-specific 32P-labeled cDNA. A cDNA clone containing an insert 1,700 base pairs (CDV 364) has been identified as ...

Phylogenetic analysis depends crucially on the data underlying the analysis, with issues of data quality being but one aspect of the problem. A second, slightly less appreciated aspect is that of data comparability and specifically the evolutionary homology (= derivation from a common shared ancestry) of the individual characters being examined. The goal of sequence alignment is to establish th...