Silicon-Based Amino Acids
rating: 0+x

Item: SCP-####

Object Class: Euclid

Special Containment Procedures: All known SCP-#### samples are to be stored in one of twenty (20) chambers at Site-██, dependent on their type. All chambers are to be stainless steel cubes, thirty (30) meters on each side, filled with methyl mercury, which are to be contained in a large room equipped with thick steel doors, in case of a breach. All staff that come into direct contact with any type of SCP-#### are to be immediately terminated and their bodies stored in methyl mercury until they can be disposed of properly. If a body of water is found which contains SCP-#### varieties, the surrounding area is to be quarantined, the body drained, and the samples taken to Site-██ to be contained.

Description: SCP-####-01 through -20 are silicon-based chemicals equivalent to the twenty carbon-based amino acids used in the construction of proteins in terrestrial life. Although slightly different in their structure, these chemicals are still able to bind with themselves and with amino acids to create facsimiles of any terrestrial protein. Samples of the chemicals seem to actively attempt to form these proteins, even producing structures similar to chromosomes. SCP-####-21 is a blanket term for silicon-based lipids exhibiting similar properties. These properties are countered by contact with methyl mercury, which, although it does not permanently neutralize them, at least prevents them from binding. Unfortunately, as methyl mercury is poisonous to terrestrial life, it is not useful as a form of protection.

Samples of SCP-####-1 through -21 appear in newly formed bodies of water, i.e. rainwater puddles, within 100 km of the town of ██████████, Russia. This area has been quarantined, and citizens are not permitted within its boundaries. These bodies are usually small enough to be easily moved to Site-██, and they pose little to no threat, as most life within the area was destroyed shortly after the area was quarantined.

Another anomalous property of SCP-#### is that it can also convert any carbon-based amino acids or lipids into varieties of itself, allowing it to "spread". When a non-methyl mercury solution containing any varieties of SCP-#### comes into contact with an organism that uses amino acids for protein formation, it immediately begins to convert the organism. This usually causes multicellular organisms to disintegrate into their component cells over a period of a few hours as cell bindings break up. Once total conversion of all cells has been completed, SCP-#### begins to rewrite the now-silicon-based genetic code of the cells, turning them into instances of SCP-####-22.

SCP-####-22 metabolizes mainly silicon and organic sugars, which it converts into a silicon-based equivalent of ATP; but attempts to move towards organic life, converting it into more of itself. At approximately the amount of cells present in 1.25 humans, the cells begin to form colonies,referred to as SCP-####-23, and start sending out individuals into the air to convert carbon-based organisms to more of itself, which appear to gravitate towards the nearest colony. At approximately 3 humans-worth of cells, the colonies appear to reach a new stage, and show different expressions of siliconized proteins. Cells begin to disappear at this point, and the colony is eventually completely gone. It is unknown where these cells disappear to.

Addendum ####-1: The amino acids that SCP-####-01 through -20 emulate are listed below:

• ####-01: Glycine

• ####-02: Alanine

• ####-03: Valine

• ####-04: Leucine

• ####-05: Isoleucine

• ####-06: Phenylalanine

• ####-07: Proline

• ####-08: Serine

• ####-09: Threonine

• ####-10: Glutamine

• ####-11: Lysine

• ####-12: Tyrosine

• ####-13: Cysteine

• ####-14: Methionine

• ####-15: Arginine

• ####-16: Histidine

• ####-17: Tryptophan

• ####-18: Aspartic Acid

• ####-19: Asparagine

• ####-20: Glutamic Acid