A microtubule is a hollow cylindrical structure built from 13 parallel protofilaments, each composed of αβ-tubulin heterodimers stacked head to tail and folded into a tube.

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#Id: 881

#Unit 13. Methods in Biology

Most STRs are found in the noncoding regions, while only about 8% locate in the coding regions.

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#Id: 938

#Unit 5. Developmental Biology

Induced pluripotent stem cell (iPSC) with the pluripotency of an embryonic stem cell. These genes were 

a. Sox2 and Oct4 (Oct3, Oct3/4, and Pou5f1) -which activated Nanog and other transcription factors that   established pluripotency and blocked differentiation

b. c-Myc which opened up chromatin and made the genes accessible to Sox2, Oct4, and Nanog

c. Klf4 -which prevents cell death

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#Id: 8223

#Unit 2. Cellular Organization

Retromer

a coat protein complex specialized for endosome-to-TGN transport, recycle the M6P receptor to the TGN

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#Id: 3999

#Unit 2. Cellular Organization

Interphase chromatin remain attached to nuclear wall proteins via matrix attachment regions (MARs) or matrix attachment DNA sequences.

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#Id: 6783

#Unit 3. Fundamental Processes

cas1, cas2, and cas4 required to create protospacer sequences Cas1 is  integrase, whereas Cas2 is a ribonuclease. In contrast, of other Cas proteins, Cas6 is involved in expression and processing of the CRISPR cluster and Cas3 in the interference of viral infection.