Contacts of the helix formed by residues 148 - 153 (chain G) in PDB entry 1N33
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 ASN 148 (chain G).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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75G VAL* 5.0 4.4 - - - +
86G GLN* 3.6 32.9 + - - +
87G VAL 5.8 0.2 - - - -
88G PRO* 4.0 10.0 - - + +
144G MET* 2.8 34.7 + - - +
145G ALA* 4.5 3.6 - - - +
146G GLU 3.9 1.3 - - - +
147G ALA* 1.3 86.4 - - - +
149G ARG* 1.3 51.1 + - - -
150G ALA* 2.6 21.6 + - - +
151G TYR* 3.2 30.6 + - + +
54K ARG* 5.2 2.7 + - - +
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Residues in contact with ARG 149 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
88G PRO* 4.7 10.1 - - + -
146G GLU* 2.7 61.0 + - - +
147G ALA 3.6 2.8 - - - +
148G ASN* 1.3 75.3 - - - +
150G ALA* 1.3 55.2 + - - +
151G TYR 3.0 8.1 + - - -
152G ALA* 3.6 19.0 + - + +
59K TYR* 4.3 40.2 + - + +
62K GLN* 5.7 3.1 + - - -
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Residues in contact with ALA 150 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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148G ASN* 2.6 9.1 + - - +
149G ARG* 1.3 73.2 - - - +
151G TYR* 1.3 75.9 + - + -
152G ALA 3.7 1.3 - - - -
153G HIS* 3.0 10.7 - - - -
54K ARG* 3.3 42.0 - - - +
57K THR* 3.1 11.6 + - + -
59K TYR* 3.7 31.6 - - + -
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Residues in contact with TYR 151 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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85G TYR* 4.4 26.3 - + + -
86G GLN* 3.6 28.7 - - + -
87G VAL* 3.7 23.5 - - + +
88G PRO* 4.1 5.3 - - + +
148G ASN* 3.4 30.1 - - + +
149G ARG 3.0 2.7 - - - -
150G ALA* 1.3 101.0 - - + +
152G ALA* 1.3 57.9 + - - +
153G HIS* 2.8 26.7 - + + -
154G TYR* 2.9 34.3 + + + +
155G ARG* 4.0 0.5 + - - -
54K ARG* 4.0 27.6 + - - -
57K THR* 5.7 1.8 - - - -
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Residues in contact with ALA 152 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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88G PRO* 5.4 4.9 - - + -
149G ARG* 3.6 17.5 + - + +
150G ALA 3.7 0.4 - - - -
151G TYR* 1.3 76.7 - - - +
153G HIS* 1.3 57.3 + - - +
154G TYR 3.3 0.4 - - - -
155G ARG* 3.1 44.4 + - - +
58K PRO* 5.7 6.0 - - + +
59K TYR* 6.5 0.7 - - + -
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Residues in contact with HIS 153 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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78G ARG* 4.9 0.3 + - - -
150G ALA 3.0 25.7 + - - -
151G TYR* 3.2 24.3 - + + -
152G ALA* 1.3 80.6 + - - +
154G TYR* 1.3 97.5 + + - +
155G ARG* 3.3 6.0 + - - -
57K THR* 3.4 18.5 + - - -
58K PRO* 4.1 26.0 - - + +
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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