The linchpin of the group is its guitarist, Jon Lundbom, who does the most to emulate the Bakersfield sound; holding down the groove are Moppa Elliott and Danny Fischer, on bass and drums.
Vilma may immediately become the linchpin of a younger, faster group of linebackers.
Mr. Helm was the American linchpin of the otherwise Canadian group that became Bob Dylan's backup band and then the Band.
The group's alleged "linchpin" was Mohammed Chowdhury, a 21-year-old from east London, who pleaded guilty at Woolwich crown court to preparing to commit an act of terrorism.
The Malian president, Amadou Touré, who was forced out of power in a coup last week, was seen as a linchpin in the fight against Islamist groups including al-Qaida in the Islamic Maghreb (AQIM), which has expanded southwards into Mali after a successful clampdown by the government in its native Algeria.
It is also the home base for Jalaluddin Haqqani, an Afghan jihadi leader whose group of Pashtun fighters is a linchpin in the alliance among Afghanistan's Islamists, Al Qaeda, and, despite its denials, Pakistan's intelligence service.
Two of these sites employ the pyrophosphate group of the nucleotide, along with active site residues, to coordinate the linchpin Mg2+ ions.
Environmental groups are reassessing their willingness to see nuclear power as a linchpin of any future climate change legislation.
Corden, who before he hit telly fame with Gavin and Stacey was at the National as one of Alan Bennett's History Boys, certainly is a marvel and the linchpin of the action: he's the man who, having been sacked from a skiffle group (he was on washboard) is constantly looking for ways to get money: he just has to stuff his face.
Nearly a year into the Syrian uprising, the predominant view in Israel today is the former, that Mr. Assad must go, not only because he has killed thousands of civilians, but because he is a linchpin in the anti-Israel Iranian power network that includes Hezbollah in Lebanon and the Palestinian groups Hamas and Islamic Jihad.
