Contacts of the helix formed by residues 50 - 54 (chain G) in PDB entry 5M64
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 ALA 50 (chain G).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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572A THR* 3.8 33.9 - - + -
16D LEU* 6.1 0.7 - - + -
49G LEU* 1.3 80.6 - - - +
51G PRO* 1.3 72.2 - - + +
52G MET* 4.3 4.0 - - + +
53G TYR* 3.0 37.7 + - + +
54G LEU* 3.6 5.7 + - - +
60G GLY* 6.1 2.0 - - - -
112G PRO 5.5 0.2 - - - -
113G PHE* 3.9 3.4 - - + -
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Residues in contact with PRO 51 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
100F GLN* 3.7 34.8 - - + +
103F MET* 4.0 14.6 - - + -
105F ALA* 4.2 4.0 - - + +
106F PRO* 4.0 10.9 - - - +
50G ALA* 1.3 84.9 - - + +
52G MET* 1.3 62.8 + - - +
53G TYR 3.2 0.7 + - - -
54G LEU* 3.2 29.8 + - + +
112G PRO* 3.5 35.9 - - + +
113G PHE* 3.5 22.4 - - + -
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Residues in contact with MET 52 (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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571A HIS* 4.7 28.3 - - + +
572A THR* 5.3 11.0 - - - +
103F MET* 4.1 9.6 + - + +
104F ASN* 3.5 44.0 - - - +
105F ALA* 4.8 0.4 - - - +
106F PRO* 4.6 6.9 - - - +
50G ALA* 3.2 4.6 - - + -
51G PRO* 1.3 79.6 - - - +
53G TYR* 1.3 85.9 + - + +
54G LEU 3.5 1.1 + - - -
55G GLU* 4.8 7.6 - - - +
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Residues in contact with TYR 53 (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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571A HIS* 3.6 25.7 + + - -
572A THR* 4.4 16.6 - - + -
49G LEU* 6.1 0.3 - - - +
50G ALA* 3.0 25.5 + - + +
52G MET* 1.3 102.2 - - + +
54G LEU* 1.3 58.8 + - - +
55G GLU* 3.3 3.6 - - - +
56G ASN* 3.1 46.2 - - - +
57G PRO* 3.2 6.8 - - + +
59G GLN* 4.8 7.4 - - + -
60G GLY* 3.6 34.5 - - - -
63G LYS* 4.6 22.7 - - + +
64G GLN* 6.3 0.9 - - + -
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Residues in contact with LEU 54 (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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1658A ALA* 5.0 17.0 - - + -
1660A VAL* 3.2 42.1 - - + +
1661A PRO* 4.8 0.3 - - - +
100F GLN* 3.3 40.8 - - + +
106F PRO* 5.1 7.4 - - + +
131F PRO* 6.1 2.9 - - + +
132F LEU* 6.3 1.8 - - + -
49G LEU* 5.4 9.2 - - + -
50G ALA 4.3 8.1 - - - +
51G PRO* 3.2 22.9 + - + +
52G MET 3.5 1.2 - - - -
53G TYR* 1.3 73.7 - - - +
55G GLU* 1.3 60.4 + - - +
56G ASN 3.1 6.0 + - - -
57G PRO* 3.4 7.1 - - + +
105G ILE* 6.5 0.7 - - + -
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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