Contacts of the helix formed by residues 64 - 93 (chain I) in PDB entry 2FJC
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with GLU 64 (chain I).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
64C GLU* 5.1 4.1 - - + +
63F ILE* 3.7 42.6 - - + +
64F GLU* 5.0 4.6 - - + +
67F GLN* 6.0 3.6 - - - +
62I GLY* 4.2 1.0 - - - -
63I ILE* 1.3 98.9 + - + +
65I PHE* 1.3 64.9 + - - +
66I LYS 3.5 1.3 - - - -
67I GLN* 3.1 19.8 + - + +
68I VAL* 3.1 28.1 + - + +
120I ILE* 3.3 27.1 - - + +
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Residues in contact with PHE 65 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
169C TRP* 3.8 21.5 - + - -
170C MET* 3.8 29.8 - - + -
173C ALA* 3.7 17.5 - - + +
174C THR* 3.6 25.6 - - + -
57I HIS 4.2 2.9 - - - -
58I TRP 4.8 2.0 - - - -
60I ILE* 3.5 47.8 - - + -
61I TYR* 4.3 0.4 - - - -
62I GLY 2.9 17.9 + - - +
63I ILE 3.2 1.8 - - - -
64I GLU* 1.3 74.7 - - - +
66I LYS* 1.3 58.7 + - + +
68I VAL* 3.2 0.7 + - - +
69I HIS* 2.7 69.2 + + + +
120I ILE* 3.4 8.8 - - - +
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Residues in contact with LYS 66 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
67C GLN 5.9 0.7 - - - +
71C LEU* 4.1 38.1 - - + +
74C GLU* 3.8 23.7 + - - -
170C MET* 5.1 18.4 - - + -
174C THR* 4.7 5.8 - - + +
63I ILE 5.0 0.6 + - - -
64I GLU 3.3 1.0 + - - -
65I PHE* 1.3 88.3 - - + +
67I GLN* 1.3 80.3 + - - +
69I HIS* 3.4 5.7 + - + +
70I GLU* 2.9 55.4 + - + +
----------------------------------------------------------
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Residues in contact with GLN 67 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
64C GLU* 6.0 3.6 - - - +
67C GLN* 3.6 31.4 - - + +
66F LYS* 5.9 0.7 - - - +
67F GLN* 3.6 44.3 - - + +
63I ILE 4.4 4.8 + - - -
64I GLU* 3.1 26.9 + - + +
66I LYS* 1.3 96.7 + - - +
68I VAL* 1.3 61.7 + - + +
70I GLU* 3.3 10.7 + - - +
71I LEU* 2.9 27.5 + - - +
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Residues in contact with VAL 68 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
63F ILE* 5.3 2.5 - - + -
60I ILE* 3.6 17.5 - - + -
64I GLU* 3.1 21.8 + - + +
67I GLN* 1.3 74.1 - - + +
69I HIS* 1.3 57.1 + - - +
71I LEU* 4.0 9.4 - - + -
72I LEU* 2.8 60.8 + - + +
120I ILE* 3.6 29.2 - - + -
123I ALA* 5.9 0.2 - - + -
124I LEU* 3.9 28.3 - - + -
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Residues in contact with HIS 69 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
166C LYS* 5.4 4.0 + - - -
169C TRP* 3.6 20.0 - + - -
170C MET* 4.9 10.2 - - - -
57I HIS* 2.7 86.4 + + - -
58I TRP* 4.9 0.4 - + - -
60I ILE* 3.7 7.7 - - - +
65I PHE* 2.7 43.7 + + + +
66I LYS* 3.4 7.9 - - + +
68I VAL* 1.3 73.7 - - - +
70I GLU* 1.3 70.2 + - + +
72I LEU* 3.5 2.1 + - - +
73I GLU* 3.3 6.6 + - - -
88L GLU* 3.6 16.8 + - - -
612L FE 3.9 1.2 - - - -
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Residues in contact with GLU 70 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
66I LYS* 2.9 58.0 + - - +
67I GLN* 3.7 7.2 - - - +
69I HIS* 1.3 83.6 - - + +
71I LEU* 1.3 65.0 + - - +
73I GLU* 3.2 16.1 + - - +
74I GLU* 3.0 31.3 + - - +
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Residues in contact with LEU 71 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
66F LYS* 3.8 39.3 - - + +
67I GLN 2.9 17.0 + - - +
68I VAL* 3.1 10.3 + - + +
70I GLU* 1.3 76.0 - - - +
72I LEU* 1.3 64.4 + - + +
74I GLU* 3.0 18.9 + - - +
75I TYR* 2.9 66.6 + - + +
124I LEU* 4.4 22.4 - - + -
171I LEU* 4.6 4.5 - - + -
174I THR* 6.2 3.4 - - + -
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Residues in contact with LEU 72 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
53I LEU* 4.1 17.7 - - + +
56I TYR* 4.0 12.6 - - + -
57I HIS* 3.9 32.5 - - + +
60I ILE* 3.9 13.2 - - + -
68I VAL* 2.8 42.3 + - + +
69I HIS 3.7 4.7 - - - +
71I LEU* 1.3 76.7 - - + +
73I GLU* 1.3 57.3 + - - +
75I TYR* 3.2 22.6 + - + +
76I TYR* 2.9 31.7 + - - +
123I ALA* 5.6 0.9 - - + -
124I LEU* 4.4 17.3 - - + -
127I VAL* 4.4 9.2 - - + -
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Residues in contact with GLU 73 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
57I HIS* 3.9 21.5 + - + -
69I HIS* 3.3 4.4 + - - +
70I GLU* 3.2 19.5 + - - +
71I LEU 3.2 0.4 - - - -
72I LEU* 1.3 76.9 - - - +
74I GLU* 1.3 67.5 + - + +
76I TYR* 3.3 33.3 + - + -
77I VAL* 2.9 37.7 + - + +
84L ASP* 5.4 1.7 - - - +
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Residues in contact with GLU 74 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
66F LYS* 3.8 28.4 + - - -
70I GLU* 3.0 21.2 + - - +
71I LEU* 3.3 17.6 - - - +
73I GLU* 1.3 76.9 - - - +
75I TYR* 1.3 63.0 + - + +
77I VAL* 3.3 6.5 + - - +
78I SER* 2.9 29.9 + - - -
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Residues in contact with TYR 75 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
53I LEU* 3.8 17.5 - - + -
71I LEU* 2.9 51.9 + - + +
72I LEU* 3.3 24.2 - - + +
73I GLU 3.1 0.2 - - - -
74I GLU* 1.3 79.6 - - + +
76I TYR* 1.3 58.1 + - - +
78I SER* 3.1 8.5 + - - -
79I VAL* 2.7 32.1 + - - +
124I LEU* 5.2 0.2 - - + -
127I VAL* 4.3 6.5 - - + -
131I PHE* 3.9 30.5 - + + -
167I ALA* 4.0 24.7 + - + +
170I MET* 5.2 3.8 - - - +
171I LEU* 3.5 31.3 + - + +
----------------------------------------------------------
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Residues in contact with TYR 76 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
50I TYR* 3.3 34.0 - + + +
53I LEU* 3.6 28.2 - - + +
54I HIS* 3.3 45.9 + + - -
57I HIS* 3.8 27.7 + + - -
72I LEU 2.9 25.0 + - - -
73I GLU* 3.6 39.9 + - + -
75I TYR* 1.3 73.6 - - - +
77I VAL* 1.3 69.5 + - + +
79I VAL* 3.7 2.9 - - - -
80I THR* 3.0 22.3 + - - -
80L THR* 6.5 0.7 - - + -
84L ASP* 3.8 11.1 + - - +
612L FE 3.9 1.4 - - - -
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Residues in contact with VAL 77 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
50I TYR* 5.3 0.2 - - - -
73I GLU* 2.9 30.7 + - + +
74I GLU* 3.6 6.7 - - - +
76I TYR* 1.3 90.0 - - + +
78I SER* 1.3 65.0 + - - +
80I THR* 3.2 14.2 - - + +
81I GLU* 3.1 23.2 + - + +
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Residues in contact with SER 78 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
74I GLU 2.9 16.7 + - - -
75I TYR* 3.1 9.8 + - - -
77I VAL* 1.3 77.4 - - - +
79I VAL* 1.3 64.9 + - - +
81I GLU* 3.1 17.4 + - - +
82I ALA* 3.1 21.7 + - - +
163I THR* 4.4 16.1 + - - +
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Residues in contact with VAL 79 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
46I LEU* 3.4 41.5 - - + +
49I LEU* 3.8 16.8 - - + -
50I TYR* 4.0 16.2 - - + +
53I LEU* 3.6 17.7 - - + -
75I TYR 2.7 22.9 + - - +
76I TYR* 3.8 6.5 - - - +
78I SER* 1.3 74.1 - - - +
80I THR* 1.3 57.5 + - - +
82I ALA* 3.2 7.5 + - - +
83I PHE* 2.8 26.6 + - + +
131I PHE* 4.5 8.7 - - + -
134I LEU* 5.6 1.1 - - + -
164I LEU* 6.5 0.2 - - + -
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Residues in contact with THR 80 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
50I TYR* 3.6 17.3 - - + +
76I TYR 3.0 16.3 + - - +
77I VAL* 3.2 19.1 - - + +
79I VAL* 1.3 78.7 - - - +
81I GLU* 1.3 62.3 + - + +
83I PHE* 3.2 18.4 - - - +
84I ASP* 3.0 27.5 + - - +
50L TYR* 2.8 28.3 + - - +
54L HIS* 4.7 2.1 + - - -
----------------------------------------------------------
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Residues in contact with GLU 81 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
77I VAL* 3.1 14.1 + - + +
78I SER* 3.1 18.2 + - - +
79I VAL 3.1 0.8 - - - -
80I THR* 1.3 78.6 - - + +
82I ALA* 1.3 66.4 + - - +
84I ASP* 3.2 6.1 + - - +
85I THR* 3.0 37.5 + - + +
----------------------------------------------------------
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Residues in contact with ALA 82 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
46I LEU* 4.0 15.0 - - + -
78I SER 3.1 8.5 + - - +
79I VAL* 3.6 9.0 - - - +
81I GLU* 1.3 76.7 + - - +
83I PHE* 1.3 67.1 + - - +
85I THR* 3.4 8.2 + - - -
86I ILE* 2.9 30.0 + - - +
160I ILE* 3.7 34.3 - - + -
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Residues in contact with PHE 83 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
43I VAL* 3.4 43.1 - - + +
46I LEU* 3.9 14.5 - - + +
47I GLY* 3.7 22.0 - - - -
50I TYR* 6.3 1.3 - - + -
79I VAL 2.8 14.8 + - - +
80I THR* 3.2 23.3 - - - +
82I ALA* 1.3 77.1 - - - +
84I ASP* 1.3 62.8 + - - +
86I ILE* 4.2 0.9 - - - +
87I ALA* 3.2 24.8 + - - +
104I TYR* 3.3 27.4 - + - -
50L TYR* 5.6 3.4 - + - -
51L ILE* 5.2 6.5 - - + -
54L HIS* 3.6 29.6 - + + -
58L TRP* 3.5 21.5 - + - -
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Residues in contact with ASP 84 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
80I THR 3.0 12.9 + - - +
81I GLU* 3.7 6.3 - - - +
83I PHE* 1.3 80.2 - - - +
85I THR* 1.3 64.1 + - + +
87I ALA* 3.4 4.0 + - - +
88I GLU* 2.8 39.2 + - - +
609I FE 2.2 32.4 - - - -
54L HIS* 3.0 35.9 + - - -
58L TRP* 3.8 7.3 + - - -
73L GLU* 5.4 0.5 - - - +
76L TYR* 3.5 9.0 + - - -
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Residues in contact with THR 85 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
81I GLU* 3.0 26.1 + - + +
82I ALA* 3.4 11.1 + - - -
84I ASP* 1.3 77.1 - - + +
86I ILE* 1.3 61.5 + - - +
88I GLU* 3.4 13.0 + - - +
89I ARG* 3.0 26.9 + - - +
156I ILE* 4.1 23.8 - - - +
160I ILE* 4.3 2.9 - - - +
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Residues in contact with ILE 86 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
39I LEU* 3.8 29.2 - - + +
42I HIS* 3.9 10.5 - - + -
43I VAL* 3.8 18.8 - - + +
46I LEU* 3.9 9.2 - - + -
82I ALA 2.9 11.6 + - - +
83I PHE 4.2 1.8 - - - +
85I THR* 1.3 79.3 + - - +
87I ALA* 1.3 66.2 + - - +
89I ARG* 3.1 7.9 + - - +
90I LEU* 3.0 20.8 + - - +
138I PHE* 3.3 36.8 - - + -
156I ILE* 4.4 8.5 - - + -
157I ILE* 4.8 7.4 - - + -
160I ILE* 3.5 24.2 - - + -
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Residues in contact with ALA 87 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
43I VAL* 3.8 16.8 - - + +
83I PHE 3.2 19.9 + - - +
84I ASP 3.8 1.8 - - - +
86I ILE* 1.3 76.7 - - - +
88I GLU* 1.3 58.7 + - - +
90I LEU* 3.1 9.2 - - - +
91I LEU* 3.0 30.1 + - - +
97I ALA* 4.1 8.8 - - + +
58L TRP* 3.5 36.6 - - + -
----------------------------------------------------------
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Residues in contact with GLU 88 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
166D LYS* 2.7 33.5 + - - +
169D TRP* 4.5 10.8 - - + -
84I ASP* 2.8 25.2 + - - +
85I THR* 3.7 11.6 - - - +
87I ALA* 1.3 73.8 - - - +
89I ARG* 1.3 61.8 + - - +
91I LEU* 3.2 11.3 + - - +
92I GLN* 3.0 40.2 + - - +
609I FE 2.4 30.0 - - - -
57L HIS* 4.0 0.7 + - - -
58L TRP* 4.2 13.4 - - + +
69L HIS* 3.9 10.7 + - - -
----------------------------------------------------------
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Residues in contact with ARG 89 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
165D GLY* 5.2 4.0 - - - -
39I LEU* 4.1 12.8 - - + -
85I THR 3.0 13.6 + - - +
86I ILE* 3.1 11.6 + - - +
88I GLU* 1.3 73.8 - - - +
90I LEU* 1.3 66.9 + - - +
92I GLN* 2.8 40.2 + - - +
93I LEU* 2.9 41.8 + - + +
150I ASP* 2.9 27.7 + - - -
152I VAL* 3.5 25.6 - - - +
153I THR* 2.8 24.0 + - + +
156I ILE* 3.9 24.9 - - + -
157I ILE* 6.0 0.7 - - + -
----------------------------------------------------------
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Residues in contact with LEU 90 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
36I CYS* 3.5 43.7 - - + +
39I LEU* 3.5 19.5 - - + +
40I ARG* 3.4 35.4 - - + +
43I VAL* 4.5 5.6 - - + -
86I ILE 3.0 10.6 + - - +
87I ALA 3.1 10.3 - - - +
89I ARG* 1.3 77.9 - - - +
91I LEU* 1.3 61.6 + - - +
93I LEU* 3.2 11.2 + - - +
95I ALA* 3.1 34.4 + - + +
96I GLN 4.1 3.6 - - - +
97I ALA* 3.9 10.1 - - + -
98I PRO* 3.9 15.5 - - + -
----------------------------------------------------------
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Residues in contact with LEU 91 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
169D TRP* 3.4 47.5 - - + +
87I ALA 3.0 17.9 + - - +
88I GLU* 3.4 10.8 - - - +
89I ARG 3.2 0.2 - - - -
90I LEU* 1.3 76.9 - - - +
92I GLN* 1.3 63.0 + - - +
94I GLY* 3.0 15.4 + - - -
95I ALA 3.3 16.8 - - - +
96I GLN* 4.1 0.9 - - + -
97I ALA* 3.9 8.3 - - + +
58L TRP* 3.5 35.0 - - + +
59L HIS* 3.8 31.0 - - + +
----------------------------------------------------------
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Residues in contact with GLN 92 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
162D ARG* 5.0 2.7 + - - +
165D GLY* 3.8 22.1 - - - +
166D LYS* 3.6 20.7 + - - +
169D TRP* 3.6 29.9 - - + -
88I GLU* 3.0 28.8 + - - +
89I ARG* 2.8 44.1 + - - +
91I LEU* 1.3 76.2 - - - +
93I LEU* 1.3 59.1 + - - +
94I GLY* 3.0 4.4 + - - -
152I VAL* 4.7 4.6 - - - +
156I ILE* 5.4 2.2 - - - +
----------------------------------------------------------
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Residues in contact with LEU 93 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
32I ILE* 3.3 34.8 - - + +
35I ILE* 4.0 15.3 - - + -
36I CYS* 3.8 21.7 - - - -
39I LEU* 3.8 29.4 - - + -
89I ARG* 2.9 41.3 + - - +
90I LEU 3.2 8.6 + - - +
92I GLN* 1.3 74.4 - - - +
94I GLY* 1.3 59.3 + - - +
95I ALA 3.4 0.6 + - - -
150I ASP* 4.0 6.7 - - - +
153I THR* 4.1 8.5 - - - +
----------------------------------------------------------
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
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