Contacts of the helix formed by residues 85 - 93 (chain B) in PDB entry 1CBM
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 PHE 85 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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70B ALA* 3.3 42.0 - - + -
71B PHE* 5.0 0.2 - - - -
73B ASP* 5.3 0.9 - - + -
74B GLY* 3.7 13.7 - - - -
81B LEU* 3.0 53.7 + - + +
82B LYS 3.6 2.5 - - - +
84B THR* 1.3 84.2 - - + +
86B ALA* 1.3 54.9 + - - +
87B THR 3.4 2.5 - - - -
88B LEU* 3.2 20.9 + - + +
89B SER* 2.7 37.3 + - - -
137B VAL* 4.2 21.3 - - + -
140B ALA* 4.0 21.1 - - + -
141B LEU* 4.4 19.1 - - + -
147B HEM 4.6 6.7 - - + -
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Residues in contact with ALA 86 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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82B LYS 3.1 12.1 + - - +
83B GLY* 3.2 19.1 + - - +
84B THR 3.5 0.6 - - - -
85B PHE* 1.3 76.4 - - - +
87B THR* 1.3 69.4 + - + +
89B SER* 3.2 6.2 + - - -
90B GLU* 3.1 24.6 + - - +
143B HIS* 6.4 1.3 - - - -
144B LYS* 4.3 11.5 + - - +
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Residues in contact with THR 87 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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84B THR 5.3 2.8 + - - -
85B PHE 5.3 0.3 - - - -
86B ALA* 1.3 85.8 - - + +
88B LEU* 1.3 68.4 + - - +
90B GLU* 3.2 16.5 + - - +
91B LEU* 3.0 22.3 + - - +
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Residues in contact with LEU 88 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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70B ALA* 3.8 18.6 - - + -
84B THR 5.9 1.3 - - - +
85B PHE* 3.2 24.7 + - + +
87B THR* 1.3 84.1 + - - +
89B SER* 1.3 56.8 + - - +
91B LEU* 3.4 7.2 + - + -
92B HIS* 2.8 45.4 + - + +
141B LEU* 3.8 12.1 - - + -
147B HEM 3.8 64.6 - - + +
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Residues in contact with SER 89 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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85B PHE 2.7 22.2 + - - -
86B ALA* 3.6 6.1 - - - -
88B LEU* 1.3 71.6 - - - +
90B GLU* 1.4 64.6 + - - +
92B HIS* 4.9 0.2 - - - -
93B CYS* 2.9 28.8 + - - +
140B ALA 3.8 11.2 - - - -
141B LEU* 2.9 29.3 + - - +
143B HIS* 3.7 4.9 + - - +
144B LYS* 3.2 31.2 + - - +
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Residues in contact with GLU 90 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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86B ALA* 3.1 14.1 + - - +
87B THR* 3.2 16.4 + - - +
89B SER* 1.4 78.1 - - - +
91B LEU* 1.3 61.8 + - - +
94B ASP* 3.1 43.1 + - + +
95B LYS* 3.3 7.1 + - - +
144B LYS* 3.5 25.7 + - - +
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Residues in contact with LEU 91 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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87B THR 3.0 13.3 + - - +
88B LEU* 3.6 15.3 - - + +
90B GLU* 1.3 76.4 - - - +
92B HIS* 1.3 56.8 + - + +
95B LYS* 3.2 49.2 + - + +
96B LEU* 2.7 50.0 + - + +
147B HEM 3.5 56.1 - - + +
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Residues in contact with HIS 92 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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88B LEU* 2.8 37.9 + - + +
89B SER 4.3 1.8 - - - +
91B LEU* 1.3 84.6 - - + +
93B CYS* 1.3 58.7 + - - +
96B LEU* 3.4 9.1 - - + -
97B HIS 2.9 21.0 + - - -
98B VAL* 2.9 17.3 + - + +
103B PHE* 3.8 25.6 - + + -
141B LEU* 4.1 6.5 - - + +
145B TYR* 4.7 0.2 - - - -
147B HEM 2.1 97.9 + + + -
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Residues in contact with CYS 93 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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89B SER* 2.9 19.4 + - - +
92B HIS* 1.3 76.3 - - - +
94B ASP* 1.3 68.6 + - - +
97B HIS* 3.0 28.4 + - - -
103B PHE* 4.4 3.8 - - - -
141B LEU 3.2 27.1 - - - -
142B ALA* 4.1 2.9 - - - -
144B LYS* 3.6 18.8 - - + -
145B TYR* 3.4 48.2 + - + -
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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
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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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).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il