Alanine
There
are four different types of Alanine:
3/3 GCC Hex
+51 Axis Centre Double Crystal
3/9 GCT Hex
+21 Axis NE/SW 1/1 Crystal
9/3 GCA Hex
+55 Axis SW/NE Double Crystal
9/9 GCG Hex -30 Axis
Centre 1/1 Crystal
Alanine
has three positive faces and one rear/shadow face.
All single crystals move in a right handed or clockwise motion.
When
the two crystals of the double are put together, which surely they must
be, then the movement becomes left handed or anti clockwise. So the
two most likely Alanine's for moving left handedly are GCA or GCC
because they are both in the double crystal. As 1/7 has a connection
to 7/1 so too must 3/9 and 9/3 have a connection.
If
GCA where looking into a mirror then going through the equaliser
would mean GCA could become GCT 9/3 and 3/9. GCC becoming GCG
would
not work the same way. They say left or right handed Alanine works
like a mirror image of each other but I don't think they do. I
believe that if they have a left and right handed motion it is
because of the double crystal motion.
The heart at the top is Alanine GCA and in the left hand or blue side of the double crystal and the lower heart is GCC in the right hand or red side of the double crystal. The green lines are imaginary lines connecting the two.
As a double crystal Alanine is growing in an anticlockwise manner. The other two Alanine's may well just work in a clockwise motion. I have been unable to find out which Alanine's are said to work left handedly but it cannot be all of them. If you know please let me know. Back to collating but I cam across the left handed Alanine article on my collating journey and was compelled to take a peek. x