For immunoglobulin heavy and light chain genes, and for T-cell receptor b chain genes, there are a large number of V gene segments, and relatively few J and/or D segments that rearrange to form the final coding sequence for each gene. The TCR a locus is different in this regard, and this difference is thought to reflect the fact that nearly all a:b T-cell receptors recognize a peptide bound to an MHC molecule. This unique feature of the T-cell receptor a locus is: The presence of only five different Va gene segments The presence of two different Ca coding sequences The presence of over sixty different Ja gene segments The absence of D gene segments The large sequence distance separating the Va gene segments from the Ja gene segments
For immunoglobulin heavy and light chain genes, and for T-cell receptor b chain genes, there are a large number of V gene segments, and relatively few J and/or D segments that rearrange to form the final coding sequence for each gene. The TCR a locus is different in this regard, and this difference is thought to reflect the fact that nearly all a:b T-cell receptors recognize a peptide bound to an MHC molecule. This unique feature of the T-cell receptor a locus is: The presence of only five different Va gene segments The presence of two different Ca coding sequences The presence of over sixty different Ja gene segments The absence of D gene segments The large sequence distance separating the Va gene segments from the Ja gene segments
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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For immunoglobulin heavy and light chain genes, and for T-cell receptor b chain genes, there are a large number of V gene segments, and relatively few J and/or D segments that rearrange to form the final coding sequence for each gene. The TCR a locus is different in this regard, and this difference is thought to reflect the fact that nearly all a:b T-cell receptors recognize a peptide bound to an MHC molecule. This unique feature of the T-cell receptor a locus is:
- The presence of only five different Va gene segments
- The presence of two different Ca coding sequences
- The presence of over sixty different Ja gene segments
- The absence of D gene segments
- The large sequence distance separating the Va gene segments from the Ja gene segments
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