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Obsolete: BTC

BTC was replaced with CYS on
Bonds
First atomSecond atomBond order typeDistance
(experimental model)
Distance
(ideal model)
Properties
NCAsing1.47Å1.50Å
NHsing1.01Å1.02Å
NH2sing1.01Å1.02Å
CACBsing1.53Å1.53Å
CACsing1.51Å1.53Å
CAHAsing1.09Å1.08Å
CBSGsing1.81Å1.80Å
CBHB2sing1.09Å1.08Å
CBHB3sing1.09Å1.08Å
SGHGsing1.34Å0.95Å
COdoub1.21Å1.21Å
COXTsing1.34Å1.31Å
OXTHXTsing0.97Å0.95Å
Angles
First atomSecond atomThird atomAngle
(experimental model)
Angle
(ideal model)
CANH105.5°106.7°
CANH2113.7°106.7°
NCACB105.5°109.5°
NCAC109.1°109.4°
NCAHA110.5°109.4°
HNH2113.7°106.6°
CBCAC110.8°109.5°
CBCAHA110.3°109.5°
CACBSG107.9°109.5°
CACBHB2109.8°109.5°
CACBHB3109.7°109.4°
CCAHA110.6°109.5°
CACO121.4°120.1°
CACOXT117.1°120.0°
SGCBHB2109.7°109.4°
SGCBHB3109.8°109.5°
CBSGHG107.9°100.0°
HB2CBHB3109.8°109.5°
OCOXT121.4°120.0°
COXTHXT117.1°120.0°
Dihedrals
First atomSecond atomThird atomFourth atomTorsion
(experimental model)
Torsion
(ideal model)
CANHH2125.3°113.7°
NCACBC117.9°119.9°
NCACBHA119.4°120.0°
NCACHA121.8°119.9°
NCACBSG26.4°60.0°
NCACBHB293.2°60.0°
NCACBHB3146.0°180.0°
NCACO179.5°30.0°
NCACOXT1.1°150.0°
HNCACB180.0°53.7°
HNCAC61.0°173.7°
HNCAHA60.8°66.3°
H2NCACB54.7°59.9°
H2NCAC173.8°60.1°
H2NCAHA64.4°180.0°
CBCACHA122.5°120.1°
CACBSGHB2119.6°120.0°
CACBSGHB3119.6°120.0°
CACBHB2HB3120.7°120.0°
CACBSGHG180.0°180.0°
CBCACO63.9°90.0°
CBCACOXT116.8°90.0°
CCACBSG91.6°179.9°
CCACBHB2148.9°60.0°
CCACBHB328.1°60.0°
CACOOXT179.3°180.0°
CACOXTHXT179.9°180.0°
HACACBSG145.7°60.0°
HACACBHB226.2°180.0°
HACACBHB394.6°60.0°
HACACO58.7°149.9°
HACACOXT120.6°30.1°
SGCBHB2HB3120.8°120.0°
HB2CBSGHG60.4°60.0°
HB3CBSGHG60.4°60.0°
OCOXTHXT0.6°0.0°

246704

PDB entries from 2025-12-24

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