Sandwalk

  Next Wednesday I'll be visiting Guelph University (Ontario, Canada) to give a lecture on "Evolution as a Fact and a Theory."...

As a general rule, the primary structure of a protein (amino acid sequence) ultimately determines it's final three-dimensional shape 1 ....

  From Science News [ Rate Of Escalator Injuries To Older Adults Has Doubled ] Using U.S. Consumer Product Safety Commission data, the rese...

  Sometime on Wednesday night Sandwalk notched up 500,000 visitors. To put this in perspective, after 16 months of blogging the total numbe...

  From Kuenwoo Lee (may not be original) ... Fractal Wrongness The state of being wrong at every conceivable scale of resolution. That is, ...

Here's a slideshow of figures from Horton et al. (2006) showing cartoons of various proteins. At first it seems as though every protein ...

There are four levels of protein structure. The primary structure refers to the sequence of amino acid residues in the polypeptide chain wr...

In addition to α helices and β strands , a folded polypeptide chain contains two other types of secondary structure called loops and turns....

  The Nobel Prize in Physics 1915. "for their services in the analysis of crystal structure by means of X-rays" In 1915, Sir Willi...

  The &alpha helix is one form of secondary structure in proteins. When a polypeptide chain contains the right sequence of amino acids ...

  Today's molecule isn't really a molecule. It's an indirect representation of a molecule. It would be amazing if one of you cou...

  [Hat Tip: Muse in vivo ]

Susan Mazur has followed up on her previous article about the upcoming conference on evolution [see Don't Throw the Baby Out with the Ba...

  The Face book controversy [ Is it cheating to discuss an assignment in a Facebook study group? ] has spread to lots of other blogs. On som...

  Today is PZ's 51st birthday. Here's a photo 1 of him sitting in the cafeteria of the Natural History Museum in London. That's...