H-Val-Arg-OH 由缬氨酸（Valine，Val）和精氨酸（Arginine，Arg）通过肽键连接而成。缬氨酸是一种具有非极性侧链的氨基酸，其侧链为异丙基；精氨酸的侧链含有一个胍基，这使得精氨酸带有正电荷。二者通过肽键（-CO-NH-）相连，形成二肽结构。在溶液中，H-Val-Arg-OH ...

Bent Brachvogel has examined how mitochondria influence the premature aging of the skeleton. Mitochondria play a key role in the production of energy by way of cellular respiration. Researchers ...

fine-tuning network booths — but the main stage’s skeletal structure is set. And it is resplendent. Nestled against Lombardi Avenue and diverting traffic, the draft stage rapidly has come to ...

Beeping forklifts break the quiet. The league’s most storied stadium will be an active construction site until hours before NFL Commissioner Roger Goodell strolls to the podium — installing ...

WARDVILLE, La. (KALB) - Rapides Parish Sheriff’s Office said they were investigating possible human skeletal remains found on April 23. RPSO said Deputies responded at around 4:30 p.m. to a ...

An “extremely rare” 16,000-year-old canine skeleton from southern France offers evidence that Stone Age humans cared for their pets – although the animal was also probably killed by humans.

The research, published in PLOS One, presents compelling skeletal evidence of a human victim attacked by a large carnivorous animal, likely within the context of Roman-era spectacle combat.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A skeleton ...

Skeletal analysis of Bronze Age Nubian women shows distinct adaptations in the cervical vertebrae and skull linked to carrying heavy loads on their heads, a practice dating back over 3,500 years.

Among the various molecular, cellular, and tissue changes induced by type 2 diabetes and obesity, changes in skeletal muscle are arguably the most influential in defining the physical phenotype ...