Contacts of the helix formed by residues 39 - 46 (chain K) in PDB entry 1FPY
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 39 (chain K).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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6K LEU* 5.7 6.5 - - - -
36K HIS 5.3 3.2 + - - +
37K GLN* 3.6 10.7 + - - +
38K VAL* 1.3 77.1 - - - +
40K ALA* 1.3 68.1 + - + +
41K GLU* 3.6 24.2 + - - +
42K PHE* 2.9 37.0 + - - +
43K PHE* 3.7 12.4 + - - -
47K LYS* 5.1 3.1 + - - +
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Residues in contact with ALA 40 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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6K LEU* 6.4 0.2 - - - -
39K ASN* 1.3 78.8 - - + +
41K GLU* 1.3 68.6 + - - +
43K PHE* 3.3 17.3 + - - +
44K GLU* 3.7 14.8 - - - +
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Residues in contact with GLU 41 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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39K ASN* 3.8 24.4 + - - +
40K ALA* 1.3 75.8 - - - +
42K PHE* 1.3 69.9 + - - +
43K PHE 3.0 2.7 - - - -
44K GLU* 3.0 11.7 + - + +
45K GLU* 2.7 57.3 + - + +
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Residues in contact with PHE 42 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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19K LEU* 4.1 27.6 - - + -
33K ILE* 5.5 3.8 - - + -
37K GLN 4.3 4.5 - - - +
38K VAL* 3.7 41.5 - - + -
39K ASN* 2.9 27.8 + - - +
41K GLU* 1.3 78.6 - - - +
43K PHE* 1.3 71.5 + + - +
46K GLY* 2.8 38.0 + - - -
47K LYS* 3.9 38.1 - - + +
67K LEU 5.2 0.2 - - - -
69K PRO* 3.6 39.3 - - + +
87K ILE* 4.9 6.7 - - + -
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Residues in contact with PHE 43 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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2K ALA* 4.3 23.1 - - + -
5K VAL* 4.0 26.5 - - + -
6K LEU* 4.3 17.0 - - + -
38K VAL* 4.2 13.5 - - + -
39K ASN 4.0 12.6 - - - -
40K ALA* 3.3 9.9 + - - +
41K GLU 3.0 0.8 - - - -
42K PHE* 1.3 99.7 - + - +
44K GLU* 1.3 64.4 + - + +
68K MET* 3.4 17.3 - - - +
69K PRO* 4.0 26.1 - - + +
71K ALA* 3.8 31.9 - - + -
87K ILE* 4.6 6.1 - - + -
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Residues in contact with GLU 44 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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40K ALA* 3.7 17.8 - - - +
41K GLU* 3.0 11.8 + - + +
43K PHE* 1.3 83.6 - - + +
45K GLU* 1.3 60.6 + - + +
68K MET* 3.6 11.6 - - - +
97K LEU* 4.6 7.4 - - - +
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Residues in contact with GLU 45 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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41K GLU* 2.7 51.7 + - + +
44K GLU* 1.3 74.8 - - + +
46K GLY* 1.3 69.0 + - - +
47K LYS 5.1 0.3 - - - -
66K VAL* 3.4 15.4 - - - +
68K MET* 3.4 8.3 - - - -
97K LEU* 5.0 10.2 - - + +
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Residues in contact with GLY 46 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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42K PHE* 2.8 32.5 + - - +
45K GLU* 1.3 84.2 - - - +
47K LYS* 1.3 68.0 + - - +
66K VAL* 4.2 0.7 - - - -
67K LEU 3.1 16.6 - - - -
68K MET* 3.4 7.2 - - - +
69K PRO* 3.8 7.9 - - - -
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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