D arm

D arm

The D arm is a feature in the tertiary structure of transfer RNA (tRNA). It is composed of the two D stems (four base pairs each; 10–13 and 22–25) and the D loop. The D loop contains the base dihydrouracil. The D loop's main function is that of recognition. It is widely believed that it will act as a recognition site for aminoacyl-tRNA synthetase, which is an enzyme involved in the aminoacylation of the tRNA molecule [1]. The D stem is also believed to have a recognition role although this is yet to be proved.

It is a highly variable region and is notable for its unusual conformation due to the over-crowding on one of the guanosine residues. It appears to play a large role in the stabilization of the tRNA's tertiary structure.

  1. ^ Role of the D arm and the anticodon arm in tRNA recognition by eubacterial and eukaryotic RNase P enzymes. Wolf Dietrich Hardt, Judith Schlegl, Volker A. Erdmann, Roland K. Hartmann. Biochemistry, 1993, 32 (48), 13046 -13053.

Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Arm wrestling — is a sport with two participants. Each participant places one arm, both put either the right or left, on a surface, with their elbows bent and touching the surface, and they grip each other s hand. The goal is to pin the other s arm onto the… …   Wikipedia

  • Arm Slave — Arm Slaves are fictional mecha from the light novel, manga, and anime series Full Metal Panic! OverviewThe term Arm Slave is the shortened form of Armored Mobile Master Slave System . They are largely humanoid powered suits operating in a semi… …   Wikipedia

  • ARM Cortex-A15 MPCore — Produced in production late 2011,[1] to market late 2012[2] Designed by ARM Max. CPU clock rate 1000 MHz  to 2500 MHz  …   Wikipedia

  • ARM Cortex-A9 MPCore — Designed by ARM Common manufacturer(s) TSMC Max. CPU clock rate 800 MHz  to 2000 MHz  Instruction set ARMv7 Cores …   Wikipedia

  • arm in arm — Arm Arm, n. [AS. arm, earm; akin to OHG. aram, G., D., Dan., & Sw. arm, Icel. armr, Goth. arms, L. armus arm, shoulder, and prob. to Gr. ? joining, joint, shoulder, fr. the root ? to join, to fit together; cf. Slav. rame. ?. See {Art},… …   The Collaborative International Dictionary of English

  • Arm — Arm, n. [AS. arm, earm; akin to OHG. aram, G., D., Dan., & Sw. arm, Icel. armr, Goth. arms, L. armus arm, shoulder, and prob. to Gr. ? joining, joint, shoulder, fr. the root ? to join, to fit together; cf. Slav. rame. ?. See {Art}, {Article}.] 1 …   The Collaborative International Dictionary of English

  • Arm's end — Arm Arm, n. [AS. arm, earm; akin to OHG. aram, G., D., Dan., & Sw. arm, Icel. armr, Goth. arms, L. armus arm, shoulder, and prob. to Gr. ? joining, joint, shoulder, fr. the root ? to join, to fit together; cf. Slav. rame. ?. See {Art},… …   The Collaborative International Dictionary of English

  • Arm's length — Arm Arm, n. [AS. arm, earm; akin to OHG. aram, G., D., Dan., & Sw. arm, Icel. armr, Goth. arms, L. armus arm, shoulder, and prob. to Gr. ? joining, joint, shoulder, fr. the root ? to join, to fit together; cf. Slav. rame. ?. See {Art},… …   The Collaborative International Dictionary of English

  • Arm's reach — Arm Arm, n. [AS. arm, earm; akin to OHG. aram, G., D., Dan., & Sw. arm, Icel. armr, Goth. arms, L. armus arm, shoulder, and prob. to Gr. ? joining, joint, shoulder, fr. the root ? to join, to fit together; cf. Slav. rame. ?. See {Art},… …   The Collaborative International Dictionary of English

  • Arm — Arm, ärmer, ärmste, adj. et adv. welches überhaupt den Zustand der Beraubung einer Sache ausdruckt, und zwar, 1. In eigentlicher Bedeutung, des zeitlichen Vermögens beraubt. Ein armer Mensch, ein armer Mann, eine arme Frau. Arm seyn. Arm werden.… …   Grammatisch-kritisches Wörterbuch der Hochdeutschen Mundart

  • arm in arm — {adv. phr.} With your arm under or around another person s arm, especially in close comradeship or friendship. * /Sally and Joan were laughing and joking together as they walked arm in arm down the street./ * /When they arrived at the party, the… …   Dictionary of American idioms

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”